Conversion de unitates refere a factores de conversion inter unitates de mesura differente pro le mesme quantitate . Isto articulo da listas del factores de conversion pro multe quantitates physic , como monstrate in le indice.
Le processo de conversion depende del situation specific e le fin intendite. Isto pote esser governate per regulation, contracto , specification technic , o altere standards publicate. Judicamento ingenierial pote includer factores como:
Alicun conversiones ab un systema a un altere debe esser exacte, sin augmentar o diminuer le precision del mesuration prime. Isto es appellate rarmente conversion molle . Il non involve un cambio al configuration physic del detalio que es mesurate. Tamen, a conversion dur o un conversion adaptive pote non esser exactemente equivalente. Il cambia le mesuration a commode e practic numeros e unitates in le systema nove. Il pote involver un pauc differente configuration, o substitution de dimension, del detalio.
Conversion inter unitates in le systema metric (SI ) pote esser discernite per lor prefixos -- pro exemplo, 1 kilogramma = 1000 grammas. Assi, illes es non listate in isto articulo. Exceptiones es facite si le unitate es communmente note per un altere nomine -- pro exemplo, 1 micron = 10-6 metro. Pro un lista complete de factores de multiplication, vide le prefixos del SI .
Intra omne tabella, le unitates es listate alphabeticamente, e le unitates del SI, base o derivate , es accentuate.
Pro cata quantitate physic , un numero de differente unitates es monstrate e exprimite in terminos del unitate SI correspondente.
Legenda
Symbolo
Definition
=
equala exactemente
˜
equala approximativemente
digitos
indica que digitos repete infinitemente (pro exemplo 8,294 369 corresponde a 8,294 369 369 369 369… )
(H)
(de interesse historic)
Longitude
Nomine del unitate
Symbolo
Definition
Relation al unitates del SI
ångström
Å
= 1×10-10 m
= 0,1 nm
astronomic unitate
AU
≈ Distantia ab Terra al Sol
≈ 149 597 871 464 m [1]
bohr, unitate atomic de longitude
a0
= Bohr radio de hydrogeno
≈ 5,291 772 0859×10-11 ± 3,6×10-20 m [2]
cablo, longitude de (Imperial)
= 608 ft
≈ 185,3184 m
cablo, longitude de (International)
= 1/10 nmi
= 185,2 m
cablo, longitude de (S.U.A.)
= 720 ft
= 219,456 m
catena (de agrimensor)
ch
= 66 ft (S.U.A) = 4 virgas [3]
≈ 20,116 84 m
clavo (drappo)
= 2¼ in [4]
= 0,057 15 m
cubito (H)
= Distantia ab digitos a cubito ≈ 18in
≈ 0,5 m
digito
= 7/8 in
= 0,022 225 m
digito (drappo)
= 4½ in
= 0,1143 m
fathom
fm
= 6 ft [4]
= 1,8288 m
fermi
fm
= 1×10-15 m [4]
= 1×10-15 m
furlong
fur
= 10 catenas = 660 ft = 220 yd [4]
= 201,168 m
lega (terra)
lea
= 3 millias [3]
= 4 828,032 m
ligamine (de Gunter; de agrimensor)
lnk
= 1/100 ch [4] = 0,66 ft = 7,92in
= 0,201 168 m
ligamine (de Ramsden; de Ingeniero)
lnk
= 1 ft [4]
= 0,3048 m
linea
ln
= 1/12 in [5]
= 0,002 116 m
Die luminal
= 24 horas luminal
= 2,590 206 837 12×1013 m
Hora luminal
= 60 minutas luminal
= 1,079 252 8488×1012 m
Minuta luminal
= 60 Secundas luminal
= 1,798 754 748×1010 m
Secunda luminal
= Distantia lumine propaga in un secunda in vacuo
= 299 792 458 m
Anno luminal
l.y.
= Distantia lumine propaga in vacuo in 365,25 dies [6]
= 9,460 730 472 5808×1015 m
mano
= 4 in [4]
= 0,1016 m
metro (unitate de base del SI )
m
= Distantia lumine propaga in 1/299 792 458 secunda in vacuo.[7] ≈ distantia ab equator a polo/10 000 000
= 1 m
micron
µ
= 1×10-6 m
mil; thou
mil
= 1×10-3 in
= 2,54×10-5 m
millia (international)
mi
= 80 catenas = 5280 pedes = 1760 yd
= 1 609,344 m
millia (tactical o data)
= 6000 ft
= 1828,8 m
millia (S.U.A. Survey)
mi
= 5280 ft (US Survey pedes) = (5280 × 1200/3937 ) m
˜ 1 609,347 219 m
lega nautic
NL; nl
= 3 nmi [4]
= 5556 m
millia nautic (Admiralty)
NM (Adm); nmi (Adm)
= 6080 ft
= 1853,184 m
millia nautic (international)
NM; nmi
= 1852 m [8]
= 1852 m
millia nautic (US pre 1954)
= 1853,248 m
= 1853,248 m
passo
= 2,5 ft [4]
= 0,762 m
palma
= 3 in [4]
= 0,0762 m
parsec
pc
Distantia de stella con par allax cambiamento de un arc sec unda ab un base de un astronomic unitate
≈ 3,085 677 82×1016 ± 6×106 m [9]
pede (anglese: foot) (International)
ft
= 1/3 yd = 0,3048 m = 12 in
= 0,3048 m
pede (S.U.A. Survey)
ft (US)
= 1200/3937 m [10]
≈ 0,304 800 610 m
pica
= 12 punctos
Depende de puncto
puncto (american, anglese) [11] [12]
pt
= 1/72,272 in
≈ 0,000 351 450 m
puncto (Didot; europee) [12] [13]
pt
= 1/12 × 1/72 of pied du roi;
post 1878:
= 5/133 cm
˜ 0,000 375 97 m;
post 1878:
˜ 0,000 375 939 85 m
puncto (PostScript ) [11]
pt
= 1/72 in
= 0,000 352 7 m
puncto (TeX ) [11]
pt
= 1/72,27 in
= 0,000 351 4598 m
quarto
= ¼ yd
= 0,2286 m
span (H)
= 9 in [4]
= 0,2286 m
spat [14]
= 1×1012 m
stigma; bicron (picometro )
pm
= 1×10-12 m
twip
twp
= 1/1440 in
= 1,7638 ×10-5 m
uncia (anglese: inch) (International)
in
= 1/36 yd = 1/12 ft
= 0,0254 m
virga
rd
= 16½ ft
= 5,0292 m
x unitate ; siegbahn
xu
≈ 1,0021×10-13 m [4]
yard (International)
yd
= 0,9144 m [10] = 3 ft = 36 in
= 0,9144 m
Area
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
acre (international)
ac
= 1 ch × 10 ch = 4840 sq yd
= 4 046,856 4224 m2
acre (S.U.A.survey)
ac
= 10 sq ch = 4840 sq yd
˜ 4 046,873 m2 [15]
ar
a
= 100 m2
= 100 m2
barn
b
= 10-28 m2
= 10-28 m2
catena quadrate (international)
sq ch
= 66 ft × 66 ft = 1/10 ac
= 404,685 642 24 m2
catena quadrate (S.U.A. Survey)
sq ch
= 66 ft(SUA) × 66 ft(SUA) = 1/10 ac
˜ 404,687 3 m2
corda
= 192 bd
= 1,486 448 64 m2
hectar
ha
= 10 000 m2
= 10 000 m2
kilometro quadrate
km2
= 1 km × 1 km
= 106 m2
ligamine quadrate (International)
sq lnk
= 1 lnk × 1 lnk = 0,66 ft × 0,66 ft
= 4,046 856 4224×10-2 m2
ligamine quadrate (SUA Survey)
sq lnk
= 1 lnk × 1 lnk = 0,66 ft(SUA) × 0,66 ft(SUA)
˜ 4,046 872×10-2 m2
ligamine quadrate (de Ramsden)
sq lnk
= 1 lnk × 1 lnk = 1 ft × 1 ft
= 0,09290304 m2
metro quadrate (unitate del SI )
m2
= 1 m × 1 m
= 1 m2
mil circular; thou circular
circ mil
= π/4 mil2
˜ 5,067 075×10-10 m2
mil quadrate; thou quadrate
sq mil
= 1 mil × 1 mil
= 6,4516×10-10 m2
millia quadrate
sq mi
= 1 mi × 1 mi
= 2,589 988 110 336×106 m2
millia quadrate (S.U.A. Survey)
sq mi
= 1 mi (SUA) × 1 mi (SUA)
˜ 2,589 998 47×106 m2
pede quadrate
sq ft
= 1 ft × 1 ft
= 9,290 304×10-2 m2
pede quadrate (S.U.A. Survey)
sq ft
= 1 ft (SUA) × 1 ft (SUA)
˜ 9,290 341 161 327 49×10-2 m2
planca (anglese: board)
bd
= 1 in × 1 ft
= 7,741 92×10-3 m2
quadrato (de tecto)
= 10 ft × 10 ft
= 9,290 304 m2
rood
ro
= ¼ ac
= 1 011,714 1056 m2
section
= 1 mi × 1 mi
= 2,589 988 110 336×106 m2
shed
= 10-52 m2
= 10-52 m2
stremma
= 1 000 m2
= 1 000 m2
township
= 36 sq mi (SUA)
˜ 9,323 994×107 m2
uncia circular
circ in
= π/4 sq in
˜ 5,067 075×10-4 m2
uncia quadrate
sq in
= 1 in × 1 in
= 6,4516×10-4 m2
virga quadrate
sq rd
= 1 rd × 1 rd
= 25,292 852 64 m2
yard quadrate (International)
sq yd
= 1 yd × 1 yd
= 0,836 127 36 m2
Volumine
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
acre-pede
ac ft
= 1 ac x 1 ft = 43 560 ft3
= 1 233,481 837 547 52 m3
acre-uncia
= 1 ac × 1 in
= 102,790 153 128 96 m3
barril (Imperial)
bl (Imp)
= 36 gal (Imp)
= 0,163 659 24 m3
barril (petroleo)
bl; bbl
= 42 gal (SUA)
= 0,158 987 294 928 m3
barril (SUA sic)
bl (SUA)
= 105 qt (SUA) = 105/32 bu (SUA lvl)
= 0,115 628 198 985 075 m3
barril (SUA fluido)
fl bl (SUA)
= 31½ gal (SUA)
= 0,119 240 471 196 m3
bushel (Imperial)
bu (Imp)
= 8 gal (Imp)
= 0,036 368 72 m3
bushel (SUA sic (cumulate))
bu (SUA)
= 1 ¼ bu (SUA lvl)
= 0,044 048 837 7086 m3
bushel (SUA sic (plan))
bu (SUA lvl)
= 2 150,42 cu in
= 0,035 239 070 166 88 m3
butt, pipe
= 126 gal (vino)
= 0,476 961 884 784 m3
carga (anglese: load)
= 50 pedes cubic
= 1,415 842 3296 m3
coclear de servir (anglese: tablespoon) (Canadian)
tbsp
= ½ fl oz (Imp)
= 14,206 531 25×10-6 m3
coclear de servir (Imperial)
tbsp
= 5/8 fl oz (Imp)
= 17,758 164 0625×10-6 m3
coclear de servir (metric)
= 15,0×10-6 m3
coclear de servir (S.U.A. (costumari))
tbsp
= ½ SUA fl oz
= 14,786 764 7825×10-6 m3
coclear de servir (S.U.A. (etiquetta nutritional))
tbsp
= 15 mL
= 1,5 ×10-5 m3
coclear de the (anglese: teaspoon) (Canadian)
tsp
= 1/6 fl oz (Imp)
= 4,735 510 416 ×10-6 m3
coclear de the (Imperial)
tsp
= 1/24 gi (Imp)
= 5,919 388 02083 ×10-6 m3
coclear de the (metric)
= 5,0×10-6 m3
= 5,0×10-6 m3
coclear de the (S.U.A. (costumari))
tsp
= 1/6 SUA fl oz
= 4,928 921 595×10-6 m3
coclear de the (S.U.A. (etiquetta nutritional))
tsp
= 5 mL
= 5,0×10-6 m3
coomb
= 4 bu (Imp)
= 0,145 474 88 m3
corda (ligno focal)
= 8 ft × 4 ft × 4 ft
= 3,624 556 363 776 m3
corda-pede
= 16 cu ft
= 0,453 069 545 472 m3
cuppa (jentaculo)
= 10 fl oz (Imp)
= 284,130 625×10-6 m3
cuppa (Canadian)
c (CA)
= 8 fl oz (Imp)
= 227,3045×10-6 m3
cuppa (metric)
c
= 250,0×10-6 m3
= 250,0×10-6 m3
cuppa (S.U.A. costumari)
c (SUA)
= 8 SUA fl oz = 1/16 gal (SUA)
= 236,588 2365×10-6 m3
cuppa (S.U.A. (etiquetta nutritional))
c (SUA)
= 240 mL[16]
= 240,0×10-6 m3
dash (Imperial)
= 1/384 gi (Imp) = ½ pinch (Imp)
= 369,961 751 302 08 3 ×10-9 m3
dash (SUA)
= 1/96 SUA fl oz = ½ SUA pinch
= 308,057 599 609 375×10-9 m3
dram fluide (Imperial)
fl dr
= 1/8 fl oz (Imp)
= 3,551 632 8125×10-6 m3
dram fluide (S.U.A.)
fl dr
= 1/8 SUA fl oz
= 3,696 691 195 3125×10-6 m3
fathom cubic
cu fm
= 1 fm × 1 fm × 1 fm
= 6,116 438 863 872 m3
firkin
= 9 gal (SUA)
= 0,034 068 706 056 m3
gallon (bira)
bira gal
= 282 cu in
= 4,621 152 048×10-3 m3
gallon (Imperial)
gal (Imp)
= 4,546 09 L
= 4,546 09×10-3 m3
gallon (S.U.A sic)
gal (SUA)
= 1/8 bu (SUA lvl)
= 4,404 883 770 86×10-3 m3
gallon (S.U.A. fluido; vino)
gal (SUA)
= 231 cu in
= 3,785 411 784×10-3 m3
gill (Imperial)
gi (Imp)
= 5 fl oz (Imp)
= 142,065 3125×10-6 m3
gill (S.U.A)
gi (SUA)
= 4 SUA fl oz
= 118,294 118 25×10-6 m3
gutta (Imperial)
gtt
= 1/288 fl oz (Imp)
= 98,656 467 013 8 ×10-9 m3
gutta (medical)
= 1/12 ml
= 83,03 ×10-9 m3
gutta (metric))
= 1/20 mL
= 50,0×10-9 m3
gutta (S.U.A.)
gtt
= 1/360 SUA fl oz
= 82,148 693 22916 ×10-9 m3
gutta (U.S.) (alt)
gtt
= 1/456 SUA fl oz
˜ 64,854 231×10-9 m3
hogshead (Imperial)
hhd (Imp)
= 2 bl (Imp)
= 0.327 318 48 m3
hogshead (S.U.A.)
hhd (SUA)
= 2 fl bl (SUA)
= 0,238 480 942 392 m3
jigger (liquor)
= 1½ SUA fl oz
˜ 44,36×10-6 m3
lambda
λ
= 1 mm3
= 1×10-9 m3
last
= 80 bu (Imp)
= 2,909 4976 m3
litro
L
= 1 dm3 [17]
= 0,001 m3
metro cubic (unitate del SI )
m3
= 1 m × 1 m × 1 m
= 1 m3
millia cubic
cu mi
= 1 mi × 1 mi × 1 mi
= 4 168 181 825,440 579 584 m3
minim (Imperial)
min
= 1/480 fl oz (Imp) = 1/60 fl dr (Imp)
= 59,193 880 208 3 ×10-9 m3
minim (S.U.A.)
min
= 1/480 SUA fl oz = 1/60 SUA fl dr
= 61,611 519 921 875×10-9 m3
peck (Imperial)
pk
= 2 gal (Imp)
= 9,092 18×10-3 m3
peck (S.U.A. sic)
pk
= ¼ SUA lvl bu
= 8,809 767 541 72×10-3 m3
pede cubic
cu ft
= 1 ft × 1 ft × 1 ft
= 0,028 316 846 592 m3
pede de ligno
= 1 cu ft
= 0,028 316 846 592 m3
pinch (Imperial)
= 1/192 gi (Imp) = 1/8 tsp (Imp)
= 739,923 502 60416 ×10-9 m3
pinch (S.U.A.)
= 1/48 SUA fl oz = 1/8 SUA tsp
= 616,115 199 218 75×10-9 m3
pinta (Imperial)
pt (Imp)
= 1/8 gal (Imp)
= 568,261 25×10-6 m3
pinta (S.U.A. sic)
pt (SUA sic)
= 1/64 bu (SUA lvl) = 1/8 gal (SUA sic)
= 550.610 471 3575×10-6 m3
pinta (S.U.A fluido)
pt (SUA fl)
= 1/8 gal (SUA)
= 473,176 473×10-6 m3
planca-pede (anglese: board-foot)
fbm
= 144 cu in
= 2,359 737 216×10-3 m3
pony
= 3/4 SUA fl oz
= 22,180 147 171 875×10-6 m3
pottle; quartern
= ½ gal (Imp) = 80 fl oz (Imp)
= 2,273 045×10-3 m3
quart (Imperial)
qt (Imp)
= ¼ gal (Imp)
= 1,136 5225×10-3 m3
quart (S.U.A. sic)
qt (SUA)
= 1/32 bu (SUA lvl) = ¼ gal (SUA sic)
= 1,101 220 942 715×10-3 m3
quart (S.U.A. fluido)
qt (SUA)
= ¼ gal (SUA fl)
= 946,352 946×10-6 m3
quarto; pail
= 8 bu (Imp)
= 0,290 949 76 m3
quinto
= 1/5 SUA gal
= 757,082 3568×10-6 m3
sacco (Imperial
= 3 bu (Imp)
= 0,109 106 16 m3
sacco (S.U.A.)
= 3 bu (SUA lvl)
= 0,105 717 210 500 64 m3
scruple fluide (Imperial)
fl s
= 1/24 fl oz (Imp)
= 1,183 877 60416 ×10-6 m3
seam
= 8 bu (SUA lvl)
= 0,281 912 561 335 04 m3
shot
= 1 SUA fl oz
˜ 29,57×10-6 m3
situla (anglese: bucket) (Imperial)
bkt
= 4 gal (Imp)
= 0,018 184 36 m3
strike (Imperial)
= 2 bu (Imp)
= 0,072 737 44 m3
strike (S.U.A.)
= 2 bu (SUA lvl)
= 0,070 478 140 333 76 m3
tonna (aqua)
= 28 bu (Imp)
= 1,018 324 16 m3
tonna (displaciamento)
= 35 cu ft
= 0,991 089 630 72 m3
tonna (frete)
= 40 cu ft
= 1,132 673 863 68 m3
tonna (registro)
= 100 cu ft
= 2,831 684 6592 m3
tun (vino)
= 252 gal (vino)
= 0,953 923 769 568 m3
uncia cubic
cu in
= 1 in × 1 in × 1 in
= 16,387 064×10-6 m3
uncia fluide (fluido Imperial)
fl oz (Imp)
= 1/160 gal (Imp)
= 28,413 0625×10-6 m3
uncia fluide (fluido S.U.A. (costumari))
SUA fl oz
= 1/128 gal (SUA)
= 29,573 529 5625×10-6 m3
uncia fluide (fluido S.U.A. (etiquetta nutritional))
SUA fl oz
= 30 mL[16]
= 3,0×10-5 m3
wey (S.U.A.)
= 40 bu (SUA lvl)
= 1,409 562 806 6752 m3
yard cubic
cu yd
= 27 cu ft
= 0,764 554 857 984 m3
Angulo Plan
Nomine de unitate
Symbolo
Definition
Relation al unitate del SI
arcominuta
'
= 1°/60
˜ 0,290 888×10-3 rad
arcosecunda
"
= 1°/3600
˜ 4,848 137×10-6 rad
circulo
= 360°
= 2π rad
grado de arco
°
= 1/360 de un revolution = π/180 rad
˜ 17,453 293×10-3 rad
grad ; gradian; gon
grad
= 1/400 de un revolution = 2π/400 rad = 0.9°
˜ 15,707 963×10-3 rad
mil angular
µ
= 2π/6400 rad
˜ 0,981 748×10-3 rad
minuta de arco centesimal
'
= 1 grad/100
˜ 0,157 080×10-3 rad
octante
= 45°
˜ 0,785 398 rad
quadrante
= 90°
˜ 1,570 796 rad
radian (unitate del SI )
rad
Le angulo subtendite al centro de un circulo per un arc con longitude equala le radio del circulo. Un toto revolution percurre 2π radians.
= 1 rad
semicirculo
= 180°
= π rad
secunda de arco centesimal
"
= 1 grad/(10 000)
˜ 1,570 796×10-6 rad
sextante
= 60°
˜ 1,047 198 rad
signo
= 30°
˜ 0,523 599 rad
Angulo solide
Nomine de unitate
Symbolo
Definition
Relation al unitate del SI
sphera
= 4π sr
= 4π sr
steradian (unitate del SI )
sr
Le angulo solide subtendite al centro de un sphera de radio r per un portion del superficie del sphera con un area r2 .
= 1 sr
Notas:
Vide Peso pro detalio del distinction e conversion de massa/peso.
In isto tabella, le unitate gee es usate de denotar gravitate standard pro evitar confusion del symbolo "g" pro grammas.
In physica , le libra de massa es rarmente scribite lbm de distinguer lo ab le libra-fortia (lbf ). Es deberea non legere como le mesticiate unitate "libra metro".
Massa
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
unitate de massa atomic (unificate)
u; AMU
˜ 1,660 538 73×10-27 ± 1,3×10-36 kg
barca
= 22½ sh tn
= 20 411,656 65 kg
carat
kt
= 3 1/6 gr
˜ 205,196 548 333 mg
carat (metric)
ct
= 200 mg
= 200 mg
centuple peso (anglese: hundredweight) (longe)
longe cwt or cwt
= 112 lb av
= 50,802 345 44 kg
centuple peso (breve); cental
br cwt
= 100 lb av
= 45,359 237 kg
clavo
= 8 lb av
= 3,628 738 96 kg
crith
˜ 89,9349 mg
dalton
Da
˜ 1,660 902 10×10-27 ± 1,3×10-36 kg
dram (pharmacista; troy )
dr t
= 60 gr
= 3,887 9346 g
dram (avoirdupois)
dr av
= 27 11/32 gr
= 1,771 845 195 3125 g
electronvolt
eV
= 1 eV (unitate de energia) / c2
= 1,7826×10-36 kg
gamma
?
= 1 µg
= 1,0×10-9 kg
grano
gr
= 1/7000 lb av
= 64,798 91 mg
grave
G
grave esseva le nomine original del kilogramma
= 1 kg
hyl (unitate del CGS )
= 1 gee × 1 g × 1 s2 /m
= 9,806 65 g
hyl (unitate del MKS )
= 1 gee × 1 kg × 1 s2 /m
= 9,806 65 kg
kilogram
kg
= massa del prototypo presso Paris (~ massa de 1 litro de aqua)
= 1 kg (unitate de base del SI )
kip
kip
= 1000 lb av
= 453,592 37 kg
lamina (anglese: sheet)
= 1/700 lb av
= 647,9891 mg
libra (avoirdupois)
lb av
= 0,453 592 37 kg = 7000 granos
= 0,453 592 37 kg
libra (metric)
= 500 g
= 500 g
libra (troy)
lb t
= 5 760 granos
= 0,373 241 7216 kg
mark
= 8 oz t
= 248,827 8144 g
massa electronic
me
˜ 9,109 382 15×10-31 ± 45×10-39 kg [18]
mite
= 1/20 gr
= 3,239 9455 mg
mite (metric)
= 1/20 g
= 50 mg
peso de penny
dwt; pwt
= 1/20 oz t
= 1,555 173 84 g
puncto
= 1/100 ct
= 2 mg
quarto (Imperial)
= 1/4 longe cwt = 2 st = 28 lb av
= 12,700 586 36 kg
quarto (informal)
= ¼ tonna breve
= 226,796 185 kg
quarto, longe (informal)
= ¼ tonna longe
= 254,011 7272 kg
quintal (metric)
q
= 100 kg
= 100 kg
scruple (pharmacista )
s ap
= 20 gr
= 1,295 9782 g
sacco (caffe )
= 60 kg
= 60 kg
sacco (cemento de Portland )
= 94 lb av
= 42,637 682 78 kg
slug ; geelibra
slug
= 1 gee × 1 lb av × 1 s2 /ft
˜ 14,593 903 kg
stone
st
= 14 lb av
= 6,350 293 18 kg
tonna, essayo (longe)
AT
= 1 mg × 1 longe tn ÷ 1 oz t
˜ 32,666 667 g
tonna, essayo (breve)
AT
= 1 mg × 1 sh tn ÷ 1 oz t
˜ 29,166 667 g
tonna, longe
tn longe o tonna
= 2 240 lb
= 1 016,046 9088 kg
tonna, breve
tn br
= 2 000 lb
= 907,184 74 kg
tonne (unitate del mts )
t
= 1 000 kg
= 1 000 kg
uncia (troy)
oz t
= 1/12 lb t
= 31,103 4768 g
uncia (avoirdupois)
oz av
= 1/16 lb
= 28,349 523 125 g
uncia (S.U.A. etiquetta nutritional)
oz
= 28 g
= 28 g
wey
= 252 lb = 18 st
= 114,305 277 24 kg (variantes existe)
Densitate
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
gram per millilitro
g/mL
= 1 kg/L
= 1000 kg/m3
kilogramma per litro
kg/L
= kg/L
= 1000 kg/m3
kilogramma per metro cubic (unitate del SI )
kg/m3
= kg/m3
= 1 kg/m3
libra (avoirdupois ) per pede cubic
lb/ft3
˜ 16,018 463 37 kg/m3
˜ 16,018 463 37 kg/m3
libra (avoirdupois) per uncia (longitude) cubic
lb/in3
= 1728 lb/ft3
˜ 2,767 990 471×104 kg/m3
libra (avoirdupois) per gallon (Imperial)
lb/gal
˜ 99,776 372 66 kg/m3
˜ 99,776 372 66 kg/m3
libra (avoirdupois) per gallon (S.U.A. fluido)
lb/gal
˜ 119,826 427 3 kg/m3
˜ 119,826 427 3 kg/m3
slug per pede cubic
slug/ft3
˜ 515,378 818 4 kg/m3
˜ 515,378 818 4 kg/m3
uncia (avoirdupois) per gallon (Imperial)
oz/gal
= 1/16 lb/gal
˜ 6,236 023 291 kg/m3
uncia (avoirdupois) per gallon (S.U.A. fluido)
oz/gal
= 1/16 lb/gal
˜ 7,489 151 707 kg/m3
uncia (avoirdupois) per pede cubic
oz/ft3
= 1/16 lb/ft3
˜ 1,001 1539 61 kg/m3
uncia (avoirdupois) per uncia (longitude) cubic
oz/in3
= 108 lb/ft3
˜ 1,729 994 044×103 kg/m3
Tempore
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
anno (Gregorian)
a
= 365,2425 d medie, calculate ab annos commun (365 d), plus annos bissextil pro multe annos divisibile per 4. Vide anno bissextil pro detalios.
= 31 556 952 s
anno (Julian)
a (y, yr in anglese)
= 365,25 d medie, calculate ab annos commun (365 d), plus un anno bissextil (366 d) omne quatro annos.
= 31 557 600 s
anno (sidereal)
a
= tempore pro Sol de retornar al mesme position relative al stellas del sphera celestial
≈ 365,256 363 d ≈ 31 558 149,7632 s
anno (tropical)
a
= tempore pro Sol de retornar al mesme position in le cyclo de saisons
≈ 365,242 190 d ≈ 31 556 925 s
unitate atomic de tempore
au
= a0 /(a ·c)
≈ 2,418 884 254×10-17 s
cyclo Callippic
= 441 menses (cave) + 499 menses (plen) = 76 annos de 365,25 dies
= 2,398 3776×109 s
cyclo Hipparchic
= 4 cyclos Callippic - 1 d
= 9,593 424×109 s
cyclo Metonic ; enneadecaeteris
= 110 me (cave) + 125 me (plen) = 6940 d ≈ 19 a
= 5,996 16×108 s
cyclo Sothic
= 1 461 annos de 365 d
= 4,607 4096×1010 s
decennio
dec
= 10 a
= 10 × anno
die
d
= 24 h
= 86 400 s
die (sidereal)
d
= Tempore necessari pro le Terra de rotar un vice circa su axe, determinate per successive transitos de un multo distante objecto astronomic trans le meridian de un observator
≈ 86 164,1 s
fortnight
fn
= 2 septimanas
= 1 209 600 s
helek
= 1/1 080 h
= 3,3 s
hora
h
= 60 min
= 3 600 s
jiffy
j
= 1/60 s
= 0,016 s
jiffy (alternate)
ja
= 1/100 s
= 10 ms
ke (quarto de un hora)
= 1/4 h = 1/96 d
= 60 × 60 / 4 s = 900 s = 60 / 4 min = 15 min
ke (traditional)
= 1/100 d
= 24 × 60 × 60 / 100 s = 864 s = 24 * 60 / 100 min = 14,4 min
lustre (lustrum)
= 5 annos de 365 d
= 1,5768×108 s
mense (plen)
me
= 30 d[19]
= 2 592 000 s
mense (Gregorian medie)
me
= 365,2425/12 d = 30,436875 d
≈ 2,6297×106 s
mense (cave)
me
= 29 d[19]
= 2 505 600 s
mense (synodic)
me
Tempore cyclic del phases del Luna ≈ 29,530589 dies (medie)
≈ 2,551×106 s
millennio
= 1 000 a
= 1000 × anno
millidie
md
= 1/1 000 d
= 24 × 60 × 60 / 1 000 s = 86,4 s
minuta
min
= 60 s
= 60 s
momento
= 90 s
= 90 s
octaeteris
= 48 me (plen) + 48 me (cave) + 3 me (plen) = 8 a of 365,25 d = 2922 d
= 2,524 608×108 s
seculo
c
= 100 a
= 100 × anno
secunda
s
tempore de 9 192 631 770 periodos del radiation correspondente al transition inter le 2 hyperfin nivellos del stato fundamental de un atomo de caesium 133 a 0 K. (Altere secundas es rarmente usate in astronomia.)
(Unitates de base del SI )
septimana
sep
= 7 d
= 604 800 s
shake
= 10-8 s
= 10 ns
sigma
= 10-6 s
= 1 µs
svedberg
S
= 10-13 s
= 100 fs
tempore Planck
= (G ℏ /c 5 )½
≈ 1,351 211 868×10-43 s
Ubi UTC es observite, le longitude del unitates de tempore plus longe que 1 s pote accrescer o diminuer per 1 s si un secunda bissextil occurre durante le intervallo temporal de interesse.
Frequentia
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
hertz (unitate del SI )
Hz
= Numero de cyclos per secunda
= 1 Hz = 1/s
revolutions per minuta
rpm
= Un rpm equala un rotation complete circa un axe fixe in un minuta de tempore ≈ 0,104719755 rad/s
= 1/60 Hz
Rapiditate
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
furlong per fortnight (unitate humorose de physica)
≈ 1,96428 fph
≈ 1,663 095×10-4 m/s
kilometro per hora
km/h o kph
= 1 km/h ≈ 0,621 371 192 mph
≈ 2,777 778×10-1 m/s
metro per secunda (unitate del SI )
m/s
= 1 m/s = 3,6 kph ≈ 2,2369 mph
= 1 m/s
millia per hora
mph
= 1,46 fps = 1,609 344 kph
= 0,447 04 m/s
millia per minuta
mpm
= 60 mph = 88 fps
= 26,8224 m/s
millia per secunda
mps
= 3600 mph = 5280 fps
= 1 609,344 m/s
nodo
kn
= 1 NM /h = 1,852 km/h
≈ 0,514 444 m/s
nodo (Admiralty)
kn
= 1 NM (Adm)/h = 1,853 184 km/h
= 0,514 773 m/s
Numero Mach
M
Ratio del rapiditate al rapiditate sonic in un material. (sin unitates)
≈ 340 a 295 m/s pro avion
pede per hora
fph
= 1/3600 fps ≈ mph
˜ 8,466 667×10-5 m/s
pede per minuta
fpm
= 1/60 fps ≈ 1,136 364×10-2 mph
= 5,08×10-3 m/s
pede per secunda
fps
= 1 ft/s = 0,681 mph
= 3,048×10-1 m/s
rapidiate de lumine in vacuo
c
= 299 792 458 m/s
= 299 792 458 m/s
rapidate sonic in aer
s
Varia specialmente de temperatura - circa 761 mph (1225 kph) a nivello del mar a circa 660 mph (1062 kph), a altitudes avionic.
≈ 340 a 295 m/s a altitudes avionic
uncia per minuta
ipm
= 1 in/min = 1/720 fps
˜ 4,23 333×10-4 m/s
uncia per secunda
ips
= 1 in/s = 1/12 fps
= 2,54×10-2 m/s
Un velocitate consiste de un rapidate con un direction; le rapiditate parte del velocitate ha unitates de rapiditate.
Fluxo volumetric
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
gallon (S.U.A. fluido) per die
GPD
= 1 gal/d
= 4,381 263 638 ×10-8 m3 /s
gallon (S.U.A. fluido) per hora
GPH
= 1 gal/h
= 1,051 503 273 ×10-6 m3 /s
gallon (S.U.A. fluido) per minuta
GPM
= 1 gal/min
= 6,309 019 64×10-5 m3 /s
litro per hora
LPH
= 1 L/h
= 2,7 ×10-7 m3 /s
litro per minuta
LPM
= 1 L/min
= 1,6 ×10-5 m3 /s
litro per secunda
LPS
= 1 L/s
= 0,001 m3 /s
metro cubic per secunda (unitate del SI )
m3 /s
= 1 m3 /s ≈ 2118,88 CFM
= 1 m3 /s
pede cubic per minuta
CFM
= 1 ft3 /min
= 4,719 474 432×10-4 m3 /s
pede cubic per secunda
ft3 /s
= 1 ft3 /s = 60 CFM
= 0,028 316 846 592 m3 /s
uncia cubic per minuta
in3 /min
= 1 in3 /min = 1728 CFM
= 2,731 1773 ×10-7 m3 /s
uncia cubic per secunda
in3 /s
= 1 in3 /s = 103 680 CFM
= 1,638 706 4×10-5 m3 /s
Acceleration
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
gal ; galileo
Gal
= 1 cm/s2
= 10-2 m/s2
gravitate standard
g
= 9,806 65 m/s2 ≈ 32,17405 fps2
= 9,806 65 m/s2
nodo per secunda
kn/s
= 1 kn/s = 1 millia nautic /(h·s)
≈ 5,144 444×10-1 m/s2
metro per secunda quadrate (unitate del SI )
m/s2 ≈ 3,28084 fps2
= 1 m/s2
= 1 m/s2
millia per hora per secunda
mph/s
= 1 mi/(h·s)
= 4,4704×10-1 m/s2
millia per minuta per secunda
mpm/s
= 1 mi/(min·s)
= 26,8224 m/s2
millia per secunda quadrate
mps2
= 1 mi/s2
= 1,609 344×103 m/s2
pede per hora per secunda
fph/s
= 1 ft/(h·s)
≈ 8,466 667×10-5 m/s2
pede per minuta per secunda
fpm/s
= 1 ft/(min·s)
= 5,08×10-3 m/s2
pede per secunda quadrate
fps2
= 1 ft/s2
= 3,048×10-1 m/s2
uncia per minuta per secunda
ipm/s
= 1 in/(min·s)
≈ 4,233 333×10-4 m/s2
uncia per secunda quadrate
ips2
= 1 in/s2
= 2,54×10-2 m/s2
Fortia
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
dyne (cgs )
dyn
= g·cm/s2
= 10-5 N
kilogramma-fortia ; kilopond; grave -fortia
kgf; kp; Gf
= g × 1 kg
= 9,806 65 N
kip ; kip-fortia
kip; kipf; klbf
= g × 1 000 lb
= 4,448 221 615 2605×103 N
milligrave -fortia, gravet-fortia
mGf; gf
= g × 1 g
= 9,806 65 mN
newton (unitate del SI )
N
Un fortia que pote dar un mass de 1 kg un acceleration de 1 metro per secunda quadrate.[20]
= 1 N = 1 kg·m/s2
libra
lb
= slug·ft/s2
= 4,448 230 531 N
libra-fortia
lbf
= g × 1 lb
= 4,448 221 615 2605 N
poundal
pdl
= 1 lb·ft/s2
= 0,138 254 954 376 N
sthene (unitate del mts )
sn
= 1 t·m/s2
= 1×103 N
tonna -fortia
tnf
= g × 1 tonna breve
= 8,896 443 230 521×103 N
uncia-fortia
ozf
= g × 1 oz
= 0,278 013 850 953 7812 N
unitate de fortia atomic
= me ·a 2 ·c 2 /a0
≈ 8,238 722 06×10-8 N [21]
Vide etiam: Conversions inter peso (fortia) e massa
Pression
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
atmosphera (standard)
atm
= 101 325 Pa [22]
atmosphera (technic)
at
= 1 kgf/cm2
= 9,806 65×104 Pa [22]
bar
bar
= 105 Pa
barye (unitate del cgs )
= 1 dyn/cm2
= 0,1 Pa
centimetro de mercurio
cmHg
= 13 595,1 kg/m3 × 1 cm × g
≈ 1,333 22×103 Pa [22]
centimetro de aqua (4 °C)
cmH2 O
≈ 999,972 kg/m3 × 1 cm × g
≈ 98,0638 Pa [22]
kilogramma-fortia per millimetro quadrate
kgf/mm2
= 1 kgf/mm2
= 9,806 65×106 Pa [22]
kip per uncia quadrate
ksi
= 1 kipf/sq in
≈ 6,894 757×106 Pa [22]
micron (micrometro) de mercurio
μ
{\displaystyle \mu }
mHg
= 13 595,1 kg/m3 × 1
μ
{\displaystyle \mu }
m × g ≈ 0.001 torr
≈ 0,133 3224 Pa [22]
millimetro de mercurio
mmHg
= 13 595,1 kg/m3 × 1 mm × g ≈ 1 torr
≈ 133,3224 Pa [22]
millimetro de aqua (3,98 °C)
mmH2 O
≈ 999,972 kg/m3 × 1 mm × g = 0,999 972 kgf/m2
= 9,806 38 Pa
pascal (unitate del SI )
Pa
= N/m2 = kg/(m·s2 )
= 1 Pa [23]
libra per pede quadrate
psf
= 1 lbf/ft2
≈ 47,880 25 Pa [22]
libra per uncia (longitude) quadrate
psi
= 1 lbf/in2
≈ 6,894 757×103 Pa [22]
pede de aqua (39,2 °F)
ftH2 O
≈ 999,972 kg/m3 × 1 ft × g
≈ 2,988 98×103 Pa [22]
pede de mercurio (conventional)
ftHg
= 13 595,1 kg/m3 × 1 ft × g
≈ 40,636 66×103 Pa [22]
pièze (unitate del mts )
pz
= 1 000 kg/m·s2
= 1×103 Pa = 1 kPa
poundal per pede quadrate
pdl/sq ft
= 1 pdl/sq ft
≈ 1,488 164 Pa [22]
tonna breve per pede quadrate
= 1 tn br × g / 1 sq ft
≈ 95,760 518×103 Pa
torr
torr
= 101 325/760 Pa
≈ 133,3224 Pa [22]
uncia de aqua (39,2 °F)
inH2 O
≈ 999,972 kg/m3 × 1 in × g
≈ 249,082 Pa [22]
uncia de mercurio (conventional)
inHg
= 13 595,1 kg/m3 × 1 in × g
≈ 3,386 389×103 Pa [22]
Torsion
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
metro kilogramma
m kg
= N × m / g
≈ 0,101 971 621 N·m
Newton metro (unitate del SI )
N·m
= N × m = kg·m2 /s2
= 1 N·m
pede libra
ft lbf
= g × 1 lb × 1 ft
= 1,355 817 948 331 4004 N·m
pede poundal
ft pdl
= 1 lb·ft2 /s2
= 4,214 011 009 380 48×10-2 N·m
uncia (longitude) libra
in lbf
= g × 1 lb × 1 in
= 0,112 984 829 027 6167 N·m
Energia (general)
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
cavallo-vapor -hora
hp·h
= 1 hp × 1 h
= 2,684 519 537 696 172 792×106 J
centimetro cubic de atmosphera ; standard centimetro cubic
cc atm; scc
= 1 atm × 1 cm3
= 0,101 325 J
electronvolt
eV
= e × 1 V
≈ 1,602 177 33×10-19 ± 4,9×10-26 J
erg (unitate del cgs )
erg
= 1 g·cm2 /s2
= 10-7 J
gallon -atmosphera (imperial)
imp gal atm
= 1 atm × 1 gal (imp)
= 460,632 569 25 J
gallon-atmosphera (SUA)
SUA gal atm
= 1 atm × 1 gal (SUA)
= 383,556 849 0138 J
hartree , unitate atomic de energia
Eh
= me ·a 2 ·c 2 (= 2 Ry)
≈ 4,359 744×10-18 J
joule (unitate del SI )
J
Le travalio facite per un fortia de 1 newton de mover le puncto applicational un distantia de 1 metro in le direction del fortia.[20]
= 1 J = 1 m·N = 1 kg·m2 /s2
kilowatt-hora
kW·h
= 1 kW × 1 h
= 3,6×106 J
litro -atmosphera
l atm; sl
= 1 atm × 1 L
= 101,325 J
megatonna (de TNT )
MT
= 4,184×1022 ergs = 106 tTNT
= 4,184×1015 J
pede cubic de atmosphera; standard pede cubic
cu ft atm; scf
= 1 atm × 1 ft3
= 2,869 204 480 9344×103 J
pede libra
ft lbf
= g × 1 lb × 1 ft
= 1,355 817 948 331 4004 J
pede-poundal
ft pdl
= 1 lb·ft2 /s2
= 4,214 011 009 380 48×10-2 J
rydberg
Ry
= R8 ·h ·c
≈ 2,179 872×10-18 J
tonna de TNT
tTNT
= 1 Gcalth = 4,184×1016 ergs
= 4,184×109 J
uncia (longitude) libra
in lbf
= g × 1 lb × 1 in
= 0,112 984 829 027 6167 J
yard cubic de atmosphera; standard yard cubic
cu yd atm; scy
= 1 atm × 1 yd3
= 77,468 520 985 2288×103 J
Energia Thermal o Quantitate de Calor
Nomine de unitata
Symbolo
Definition
Relation al unitates del SI
barril de oleo equivalente
bboe
≈ 5,8×106 BTU59 °F
≈ 6,12×109 J
britannic thermal unitate (ISO)
BTUISO
= 1,0545×103 J
= 1,0545×103 J
britannic thermal unitate (International Tabella)
BTUIT
= 1,055 055 852 62×103 J
britannic thermal unitate (medie)
BTUmed
≈ 1,055 87×103 J
britannic thermal unitate (thermochemical)
BTUth
≈ 1,054 350×103 J
britannic thermal unitate (39 °F)
BTU39 °F
≈ 1,059 67×103 J
britannic thermal unitate (59 °F)
BTU59 °F
= 1,054 804×103 J
= 1,054 804×103 J
britannic thermal unitate (60 °F)
BTU60 °F
≈ 1,054 68×103 J
britannic thermal unitate (63 °F)
BTU63 °F
≈ 1,0546×103 J
caloria (International Tabella)
calIT
= 4,1868 J
= 4,1868 J
caloria (medie)
calmed
≈ 4,190 02 J
caloria (thermochemical)
calth
= 4,184 J
= 4,184 J
caloria (3,98 °C)
cal3,98 °C
≈ 4,2045 J
caloria (15 °C)
cal15 °C
= 4,1855 J
= 4,1855 J
caloria (20 °C)
cal20 °C
≈ 4,1819 J
Celsius unitate caloric (International Tabella)
CHUIT
= 1 BTUIT × 1 K/°R
= 1,899 100 534 716×103 J
kilocaloria; caloria grande
kcal; Cal
= 1 000 calIT
= 4,1868×103 J
pede cubic de methano
= 1 000 BTUIT
= 1,055 055 852 62×106 J
quad
= 1015 BTUIT
= 1,055 055 852 62×1018 J
therm (E.C.)
= 100 000 BTUIT
= 105,505 585 262×106 J
therm (S.U.A.)
= 100 000 BTU59 °F
= 105,4804×106 J
thermie
th
= 1 McalIT
= 4,1868×106 J
tonna de carbon equivalente
TCE
= 7 Gcalth
= 29,3076×109 J
tonna de oleo equivalente
TOE
= 10 Gcalth
= 41,868×109 J
Potentia
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
atmosphera -centimetro cubic per minuta
atm ccm
= 1 atm × 1 cm3 /min
= 1,688 75×10-3 W
atmosphera-centimetro cubic per secunda
atm ccs
= 1 atm × 1 cm3 /s
= 0,101 325 W
atmosphera-pede cubic per hora
atm cfh
= 1 atm × 1 cu ft/h
= 0,797 001 244 704 W
atmosphera-pede cubic per minuta
atm·cfm
= 1 atm × 1 cu ft/min
= 47,820 074 682 24 W
atmosphera-pede cubic per secunda
atm cfs
= 1 atm × 1 cu ft/s
= 2,869 204 480 9344×103 W
BTU (IT) per hora
BTUIT /h
= 1 BTUIT /h
≈ 0,293 071 W
BTU (IT) per minuta
BTUIT /min
= 1 BTUIT /min
≈ 17,584 264 W
BTU (IT) per secunda
BTUIT /s
= 1 BTUIT /s
= 1,055 055 852 62×103 W
calorie (IT) per secunda
calIT /s
= 1 calIT /s
= 4,1868 W
cavallo-vapor (anglese: horsepower) (caldiera)
bhp
≈ 34.5 lb/h × 970.3 BTUIT /lb
≈ 9,810 657×103 W
cavallo-vapor (europee electric)
hp
= 75 kp·m/s
= 736 W
cavallo-vapor (Imperial electric)
hp
= 746 W
= 746 W
cavallo-vapor (Imperial mechanic)
hp
= 550 ft lbf/s
= 745,699 871 582 270 22 W
cavallo-vapor (metric)
hp
= 75 m kgf/s
= 735,498 75 W
litro -atmosphera per minuta
L·atm/min
= 1 atm × 1 L/min
= 1,688 75 W
litro-atmosphera per secunda
L·atm/s
= 1 atm × 1 L/s
= 101,325 W
lusec
lusec
= 1 L·µmHg/s
≈ 1,333×10-4 W
poncelet
p
= 100 m kgf/s
= 980,665 W
pede-libra-fortia per hora
ft lbf/h
= 1 ft lbf/h
≈ 3,766 161×10-4 W
pede-libra-fortia per minuta
ft lbf/min
= 1 ft lbf/min
= 2,259 696 580 552 334×10-2 W
pede-libra-fortia per secunda
ft lbf/s
= 1 ft lbf/s
= 1,355 817 948 331 4004 W
pede quadrate equivalente radiation directe
sq ft EDR
= 240 BTUIT /h
≈ 70,337 057 W
tonna de climatisation
= 1 t glacie disgelate / 24 h
≈ 3 504 W
tonna de refrigeration (Imperial)
= 1 BTUIT × 1 lng tn/lb ÷ 10 min/s
≈ 3,938 875×103 W
tonna de refrigeration (IT)
= 1 BTUIT × 1 sh tn/lb ÷ 10 min/s
≈ 3,516 853×103 W
watt (unitate del SI )
W
Le potentia que in un secunda de tempore rende un joule de energia.[20]
= 1 W = 1 J/s = 1 N·m/s = 1 kg·m2 /s3
Viscositate dynamic
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
libra per pede hora
lb/(ft·h)
= 1 lb/(ft·h)
≈ 4,133 789×10-4 Pa·s
libra per pede secunda
lb/(ft·s)
= 1 lb/(ft·s)
≈ 1,488 164 Pa·s
libra-fortia secunda per pede quadrate
lbf·s/ft2
= 1 lbf·s/ft2
≈ 47,880 26 Pa·s
libra-fortia secunda per uncia quadrate
lbf·s/in2
= 1 lbf·s/in2
≈ 6894,757 Pa·s
pascal secunda (unitate del SI )
Pa·s
= N·s/m2 , kg/(m·s)
= 1 Pa·s
poise (unitate del cgs )
P
= 10-1 Pa·s
= 0,1 Pa·s
Viscositate kinematic
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
metro quadrate per secunda (unitate del SI )
m2 /s
= 1 m2 /s
= 1 m2 /s
pede quadrate per secunda
ft2 /s
= 1 ft2 /s
= 0,092 903 04 m2 /s
stokes (unitate del cgs )
St
= 10-4 m2 /s
= 10-4 m2 /s
Carga electric
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
abcoulomb ; unitate electromagnetic (unitate del cgs )
abC; emu
= 10 C
= 10 C
unitate atomic de carga
au
= e
≈ 1,602 176 462×10-19 C
coulomb (unitate del SI )
C
= Le amonta de electricitate portate in 1 secunda de tempore per 1 ampere de currente.[20]
= 1 C = 1 A·s
faraday
F
= 1 mol × NA ·e
≈ 96 485,3383 C
statcoulomb ; franklin ; unitate electrostatic (unitate del cgs )
statC; Fr; esu
= (0,1 A·m) / c
≈ 3,335 641×10-10 C
Dipolo electric
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
unitate atomic de momento de dipolo electric
ea 0
≈ 8,478 352 81×10-30 C·m[25]
Fortia electromotive o differentia de potential electric [ modificar | modificar fonte ]
Voltage , fortia electromotive , o differentia de potential electric
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
abvolt (unitate del cgs )
abV
= 1×10-8 V
= 1×10-8 V
statvolt (unitate del cgs )
statV
= c · (1 µJ/A·m)
= 299,792 458 V
volt (unitate del SI )
V
Le differentia in potential electric trans 2 punctos sur un filo conductive portante 1 ampere currente constante si le potentia dissipate inter le punctos equala 1 watt.[20]
= 1 V = 1 W/A = 1 kg·m2 /(A·s3 )
Resistentia electric
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
ohm (unitate del SI )
Ω
Le resistentia inter 2 punctos in un conductor si 1 volt de differentia de potential electric, applicate al punctos, causa 1 ampere de currente in le conductor.[20]
= 1 Ω = 1 V/A = 1 kg·m2 /(A2 ·s3 )
Capacitate electric
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
farad (unitate del SI )
F
Le capacitate inter 2 plattas parallel que resulta in 1 volt de differentia potential si cargate per 1 coulomb de eletricitate.[20]
= 1 F = 1 C/V = 1 A2 ·s4 /(kg·m2 )
Fluxo de induction magnetic
Name of unitate
Symbolo
Definition
Relation al unitates del SI
maxwell (unitate del cgs )
Mx
= 10-8 Wb[26]
= 1×10-8 Wb
weber (unitate del SI )
Wb
Fluxo de induction magnetic que, concatenante un circuito de un anello, causarea in le circuito un fortia electromotive de 1 volt si le fluxo esseva reducite a zero per un taxa uniforme in 1 secunda.[20]
= 1 Wb = 1 V·s = 1 kg·m2 /(A·s2 )
Nota: que physicos appella campo magnetic es appellate densitate de fluxo magnetic per ingenieros electric e induction magnetic per mathematicos applicate e ingenieros electric.
Induction magnetic o densitate de fluxo magnetic
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
gauss (unitate del cgs )
G
= Mx /cm2 = 10-4 T
= 1×10-4 T [27]
tesla (unitate del SI )
T
= Wb /m2
= 1 T = 1 Wb/m2 = 1 kg/(A·s2 )
Inductantia
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
henry (unitate del SI )
H
Le inductantia de un circuito claudite que causa 1 volt de fortia electromotive si le currente in le circuito varia per un taxa uniforme de 1 ampere per secunda.
= 1 H = 1 Wb/A = 1 kg·m2 /(A·s)2
Entropia de information
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI units
ban ; hartley
ban; Hart
= ln(10) × kB
= 3,179 065 3(53)×10-23 J/K
bit ; shannon
bit; b; Sh
= ln(2) × kB = 1 bit
= 9,569 940 (16)×10-24 J/K
byte
B
= 8 bits
= 7,655 952 (13)×10-23 J/K
joule per kelvin , (unitate del SI )
J/K
= J/K
= 1 J/K
kilobyte (decimal)
kB
= 1 000 B
= 7,655 952 (13)×10-20 J/K
kilobyte (kibibyte )
KB; KiB
= 1 024 B = 210 bits
= 7,839 695 (13)×10-20 J/K
nat ; nip; nepit
nat
= kB
= 1,380 650 5(23)×10-23 J/K
nibble
= 4 bits
= 3,827 976 0(64)×10-23 J/K
Nota: le candela es le nomenclatura preferite pro le unitate del SI.
Intensitate luminose
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
candela (unitate de base del SI )
cd
Le intensitate luminose, in un direction specific, de un origine que emitte radiation monochromatic de frequentia 540×1012 hertz e que ha un intensitate radiante in le direction de 1/683 watt per steradian.[7]
= 1 cd
potentia candelic (nove)
cp
= 1 cd Le usage del unitate potentia candelic es discoragiate, proque illo es ambigue.
= 1 cd
potentia candelic (vetere, pre-1948)
cp
Varia e es non ben reproducibile.[28]
≈ 0,981 cd
Luminantia
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
candela per pede quadrate
cd/ft2
= cd/ft2
≈ 10,763 910 417 cd/m2
candela per uncia quadrate
cd/in2
= cd/in2
≈ 1550,003 1 cd/m2
candela per metro quadrate (unitate del SI )
cd/m2
= cd/m2
= 1 cd/m2
lambert
L
= (104 /p) cd/m2
≈ 3183,098 861 8 cd/m2
pede-lambert
fL
= (1/p) cd/ft2
≈ 3,426 259 099 6 cd/m2
stilb (unitate del CGS )
sb
= 104 cd/m2
≈ 1×104 cd/m2
Fluxo luminose
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
lumen (unitate del SI )
lm
= cd·sr
= 1 lm = 1 cd·sr
Illuminantia
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
lumen per uncia quadrate
lm/in2
= lm/in2
≈ 1550,0031 lx
lux (unitate del SI )
lx
= lm/m2
= 1 lx = 1 lm/m2
Pede-candela; lumen per pede quadrate
fc
= lm/ft2
= 10,763 910 417 lx
phot (unitate del CGS )
ph
= lm/cm2
= 1×104 lx
Radioactivitate , Activitate de Origine
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
becquerel (unitate del SI )
Bq
= Numero de disintegrations per secunda
= 1 Bq = 1/s
curie
Ci
= 3,7×1010 Bq
= 3,7×1010 Bq [29]
rutherford (H)
rd
= 1 MBq
= 1×106 Bq
Nota: ben que becquerel (Bq) e hertz (Hz) ambe ultimatemente refere al mesme unitate de base del SI (s-1 ), Hz es usate solmente pro phenomenos periodic, e Bq es usate solmente pro processos stochastic associate con radioactivitate.[30]
Radiation - exposition
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
roentgen
R
1 R = 2,58×10-4 C/kg[26]
= 2,58×10-4 C/kg
Nota: le roentgen es non un unitate del SI, e le NIST discoragia solidemente usage de lo.[26]
Radiation - dose absorbite
Nomine de unitate
Symbolo
Definition
Relation al unitates del SI
gray (unitate del SI )
Gy
= 1 J/kg = 1 m2 /s2 [31]
= 1 Gy
rad
rad
= 0,01 Gy[26]
= 0,01 Gy
Nota: ben que le definitions pro sievert(Sv) e gray (Gy) sembla indicar que illos mesura le mesme quantitates, iste es non le caso. Vide le articulo dose equivalente .
Programmatura computatorial tal como folios calculative subinde ha unitate convertitores o pote accessar convertitores libere via le Internet. Istes programmas pote facilemente converter unitates e mesurationes, sed solmente si le unitates es explicitemente definite e le conversion es compatibile (pro exemplo, cmHg a kPa). Avantiate calculatores electronic ha functionalitate pro conversion de unitates. Programmatura pro applications mathematic, scientific, e technic subinde include convertitores.
↑ United States Naval Observatory . (2009). Selected Astronomical Constants, 2009 . Accessed May 10, 2009
↑ "NIST Reference on Constants, Units, and Uncertainty." (2006). National Institute of Standards and Technology . Retrieved February 22, 2008.
↑ 3,0 3,1 National Institute of Standards and Technology General Tables of Units of Measurement
↑ 4,00 4,01 4,02 4,03 4,04 4,05 4,06 4,07 4,08 4,09 4,10 4,11 Lide, D. (Ed.). (1990). Handbook of Chemistry and Physics (71st ed). Boca Raton, FL: CRC Press. Section 1.
↑ Klein, Herbert Arthur. (1988). The Science of Measurement: a Historical Survey . Mineola, NY: Dover Publications 0-4862-5839-4 .
↑ The International Astronomical Union and Astronomical Units
↑ 7,0 7,1 7,2 The International System of Units, Section 2.1, Bureau International des Poids et Mesures http://www.bipm.org/en/si/si_brochure/chapter2/2-1/ Error de citation: Etiquetta <ref>
invalide; le nomine "sibaseunits" es definite plure vices con contento differente Error de citation: Etiquetta <ref>
invalide; le nomine "sibaseunits" es definite plure vices con contento differente
↑ International System of Units, 8th ed. (2006), Bureau International des Poids et Mesures , Section 4.1 Table 8.
↑ P. Kenneth Seidelmann, Ed. (1992). Explanatory Supplement to the Astronomical Almanac. Sausalito, CA: University Science Books. p. 716 and s.v. parsec in Glossary.
↑ 10,0 10,1 National Bureau of Standards. (June 30, 1959). Refinement of values for the yard and the pound . Federal Register, viewed September 20, 2006 at National Geodetic Survey web site .
↑ 11,0 11,1 11,2 Whitelaw, Ian. (2007). A Measure of All Things: The Story of Man and Measurement . New York: Macmillan 0-312-37026-1 . p. 152.
↑ 12,0 12,1 De Vinne, Theodore Low (1900). The practice of typography: a treatise on the processes of type-making, the point system, the names, sizes, styles and prices of plain printing types 2nd ed. New York: The Century Co. p. 142–150.
↑ Pasko, Wesley Washington (1894). American dictionary of printing and bookmaking . (1894). New York: Howard Lockwood. p. 521.
↑ http://www.unc.edu/~rowlett/units/index.html
↑ Thompson, A. and Taylor, B.N. (2008). Guide for the Use of the International System of Units (SI) . National Institute of Standards and Technology Special Publication 811. p. 57.
↑ 16,0 16,1 http://ecfr.gpoaccess.gov/cgi/t/text/text-idx?c=ecfr&rgn=div8&view=text&node=21:2.0.1.1.2.1.1.6&idno=21
↑ Barry N. Taylor, Ed.,NIST Special Publication 330: The International System of Units (SI) (2001 Edition), Washington: U.S. Government Printing Office, 43,"The 12th Conference Generale des Poids et Mesures (CGPM)…declares that the word “litre” may be employed as a special name for the cubic decimetre".
↑ CODATA Value: atomic uint of mass. (2006). National Institute of Standards and Technology . Retrieved 16 September 2008.
↑ 19,0 19,1 Pedersen O. (1983). "Glossary" in Coyne, G. , Hoskin, M., and Pedersen, O. Gregorian Reform of the Calendar: Proceedings of the Vatican Conference to Commemorate its 400th Anniversary . Vatican Observatory. Available from Astrophysics Data System .
↑ 20,0 20,1 20,2 20,3 20,4 20,5 20,6 20,7 Comité International des Poids et Mesures, Resolution 2, 1946, http://www.bipm.org/en/CIPM/db/1946/2/
↑ CODATA Value: atomic unit of force . (2006). National Institute of Standards and Technology . Retrieved September 14, 2008.
↑ 22,00 22,01 22,02 22,03 22,04 22,05 22,06 22,07 22,08 22,09 22,10 22,11 22,12 22,13 22,14 22,15 Barry N. Taylor, (April 1995), Guide for the Use of the International System of Units (SI) (NIST Special Publication 811), Washington, DC: U.S. Government Printing Office, pp. 57–68.
↑ Barry N. Taylor, (April 1995), Guide for the Use of the International System of Units (SI) (NIST Special Publication 811), Washington, DC: U.S. Government Printing Office, p. 5.
↑ International System of Units, 8th ed. (2006), Bureau International des Poids et Mesures , Section 4.1 Table 7.
↑ http://physics.nist.gov/cgi-bin/cuu/Value?auedm
↑ 26,0 26,1 26,2 26,3 NIST Guide to SI Units, Appendix B.9 (http://physics.nist.gov/Pubs/SP811/appenB9.html ) Error de citation: Etiquetta <ref>
invalide; le nomine "nistguide" es definite plure vices con contento differente Error de citation: Etiquetta <ref>
invalide; le nomine "nistguide" es definite plure vices con contento differente
↑ Standard for the Use of the International System of Units (SI): The Modern Metric System IEEE/ASTM SI 10-1997. (1997). New York and West Conshohocken, PA: Institute of Electrical and Electronics Engineers and American Society for Testing and Materials . Tables A.1 through A.5.
↑ http://physics.nist.gov/cuu/Units/candela.html
↑ Ambler Thompson & Barry N. Taylor. (2008). Guide for the Use of the International System of Units (SI) . Special Publication 811. Gaithersburg, MD: National Institute of Standards and Technology . p. 10.
↑ 30,0 30,1 http://www.bipm.org/en/si/si_brochure/chapter2/2-2/table3.html Error de citation: Etiquetta <ref>
invalide; le nomine "sibrochure222" es definite plure vices con contento differente
↑ Ambler Thompson & Barry N. Taylor. (2008). Guide for the Use of the International System of Units (SI) . Special Publication 811. Gaithersburg, MD: National Institute of Standards and Technology . p. 5.