Supported units

Meter

m

1 m

SI Base Unit

Kilogram

kg

1 kg

SI Base Unit

Second

s

1 s

SI Base Unit

Ampere

A

1 A

SI Base Unit

Kelvin

K

1 K

SI Base Unit

Mole

mol

1 mol

SI Base Unit

Candela

cd

1 cd

SI Base Unit

Radian

rad

1 (represented as m/m)*

SI Unit

Steradian

sr

1 (represented as m²/m²)*

SI Unit

Hertz

Hz

1 s-1

SI Unit

Newton

N

1 m kg s-2

SI Unit

Pascal

Pa

1 m-1 kg s-2

SI Unit

Joule

J

1 m² kg s-2

SI Unit

Watt

W

1 m² kg s-3

SI Unit

Coulomb

C

1 s A

SI Unit

Volt

V

1 m² kg s-3 A-1

SI Unit

Farad

F

1 m-2 kg-1 s4 A2

SI Unit

Ohm

Ω

1 m² kg s-3 A-2

SI Unit

Siemens

S

1 m-2 kg-1 s3 A2

SI Unit

Weber

Wb

1 m2 kg s-2 A-1

SI Unit

Tesla

T

1 kg s-2 A-1

SI Unit

Henry

H

1 m2 kg s-2 A-2

SI Unit

Degree Celsius

°C

1 K + 273.15

SI Unit

Lumen

lm

1 cd

SI Unit

Lux

lx

1 m-2 cd

SI Unit

Becquerel

Bq

1 s-1

SI Unit

Gray

Gy

1 m2 s-2

SI Unit

Sievert

Sv

1 m2 s-2

SI Unit

Katal

kat

1 s-1 mol

SI Unit

Minute

min

60 s

SI accepts

Hour

h

3600 s

SI accepts

Day

d

86400 s

SI accepts

Degree

°

π/180 (represented as m/m)*

SI accepts

Minute

´

π/10800 (represented as m/m)*

SI accepts

Second

´´

π/648000 (represented as m/m)*

SI accepts

Hectare

ha

104 m2

SI accepts

Liter

L, l

10-3 m3

SI accepts

Metric ton

t

103 kg

SI accepts

Electron volt

eV

1.602176634 10-19 m2 kg s-2

SI accepts

Dalton

Da

1.66053906660 10-27 kg

SI accepts

Astronomical unit

au

1.49597870700 1011 m

SI accepts

Neper

Np

1 (represented as W/W)

SI accepts

Bel

B

0.434294481903252 (represented as W/W)*

SI accepts

Atomic mass unit

u

1.66053886 10-27 kg

Formerly accepted by SI

Astronomical unit

au

1.49597870700 1011 m

Formerly accepted by SI

Bar

bar

105 m-1 kg s-2

Formerly tolerated by SI

Millimeters of mercury

mmHg, Torr

133.322 m-1 kg s-2

Formerly tolerated by SI

Angstrom

Å

10-10 m

Formerly tolerated by SI

Nautical mile

NM, M

1852 m

Formerly tolerated by SI

Barn

b

10-28 m2

Formerly tolerated by SI

Knots

kn

(1852/3600) m s-1

Formerly tolerated by SI

Sone

sone

1 (represented as W/W)*

Informational unit of measure (acoustics)

Phon

phon

1 (represented as W/W)*

Informational unit of measure (acoustics)

Bark

Bark

1

Informational unit of measure (acoustics)

Acum

acum

1

Informational unit of measure (acoustics)

Octave

oct

1 (represented as s/s)*

Informational unit of measure (acoustics)

Decade

dec

3.321928094887362 (represented as s/s)*

Informational unit of measure (acoustics)

Pi

π

3.141592653589793 (represented as m/m)*

Informational unit of measure (mathematics)

E

e

2.718281828459045 (represented as m/m)*

Informational unit of measure (mathematics)

Percent

%

10-2

Informational unit of measure (mathematics)

Parts per million

ppm

10-6

Informational unit of measure (mathematics)

Bit

bit

1

Informational unit of measure (information science)

Octet

o

8

Informational unit of measure (information science)

Shannon

Sh

0.6931471805599453

Informational unit of measure (information science)

Natural information unit

nat

1

Informational unit of measure (information science)

Hartley

Hart

2.302585092994045

Informational unit of measure (information science)

Baud

Bd

1 s-1

Informational unit of measure (information science)

Erlang

E

1 (represented as s/s)

Informational unit of measure (information science)

Var

var

1 m2 kg s-3

German unit, SI tolerant

Degrees Fahrenheit

°F

5/9 K + 255.37

US unit, use in SI not recommended

Degrees Rankine

°Ra

5/9 K

US unit, use in SI not recommended

inch

in

No

25.4 mm

foot

ft

No

0.3048 m

yard

yd

No

0.9144 m

mile

mi

No

1.609344 km

fathom

ftm

No

1.8288 m

cable

cb

No

219.456 m

square survey foot

sq ft

No

0.09290341 m²

square chain

sq ch

No

404.6873 m²

acre

acre

No

4046.873 m²

section

section

No

2.589998 km²

cubic inch

cu in

No

16.387064 mL

cubic foot

cu ft

No

28.31685 L

cubic yard

cu yd

No

0.7645549 m³

acre foot

acre ft

No

1233.482 m³

US fluid dram

fl dr

No

3.696691 mL

teaspoon

tsp

No

4.928921 mL

tablespoon

Tbsp

No

14.78676 mL

US fluid ounce

fl oz

No

29.57353 mL

jigger

jig

No

44.36028 mL

US gill

gi

No

118.2941 mL

US cup

cp

No

236.5882 mL

(liquid) US pint

pt

No

473.1765 mL

(liquid) US quart

qt

No

0.9463529 L

(liquid) US gallon

gal

No

3.785412 L

(liquid) barrel

bbl

No

119.2405 L

grain

gr

No

64.79891 mg

dram

dr

No

1.771845 g

ounce

oz

No

28.34952 g

pound

lb

No

453.59237 g

US hundredweight

cwt

No

45.359237 kg

short ton

ton

No

907.18474 kg

dyne

dyn

Yes

g cm s-2

erg

erg

Yes

g cm2 s-2

statwatt

sW

Yes

g cm2 s-3

barye

Ba

Yes

g cm-1 s-2

galileo

Gal

Yes

cm s-2

poise

P

Yes

g cm-1 s-1

stokes

St

Yes

cm2 s-1

hertz

Hz

Yes

s-1

statcoulomb

sC

Yes

g1/2 cm3/2 s-1

franklin

Fr

Yes

g1/2 cm3/2 s-1

statampere

sA

Yes

g1/2 cm3/2 s-2

statvolt

sV

Yes

g1/2 cm1/2 s-1

statohm

sΩ

Yes

s cm-1

statfarad

sF

Yes

cm

maxwell

Mx

Yes

g1/2 cm3/2 s-1

gauss

G

Yes

g1/2 cm-1/2 s-1

oersted

Oe

Yes

g1/2 cm-1/2 s-1

gilbert

Gb

Yes

g1/2 cm3/2 s-2

unit pole

pole

Yes

g1/2 cm3/2 s-1

stathenry

sH

Yes

s2 cm-1

phot

ph

Yes

cd sr cm-2

stilb

sb

Yes

cd cm-2

lambert

Lb

Yes

cd cm-2

kayser

kaiser

Yes

cm-1

revolutions per minute

rpm

No

1/min

revolutions per minute

RPM

No

1/min

decibel (A)

dB(A)

No

dB

decibel (B)

dB(B)

No

dB

decibel (C)

dB(C)

No

dB

Revolutions

R

No

°C

degree Celsius

DegC

No

°C

second

sec

No

S

acceleration of free fall

G *

No

s

Free-fall acceleration

P

Yes

9.80665 N

gal

Gal

Yes

1 cm/s²

pounds per square inch

PSI

No

6.894757 KPA

pounds per square inch

PSI

No

6.894757 kPa

pounds per square inch

psi

No

6.894757 kPa