Info Library

Options

Printer friendly

General Data > Angle, area, volume and length units and equivalents

Angle

Unit Name

Symbol

SI Equivalent

arc minute (minute of arc)

2.90888x10^-4 rad

arc second (second of arc)

4.84814x10^-6 rad

circumference

6.28319 rad

degree

1.74533x10^-2 rad

gon

1.5708x10^-2 rad

grade

1.5708x10^-2 rad

hour of arc

0.261799 rad

milliradian

mrad

1x10^-3 rad

percent

9.99967x10^-3 rad

quadrant (angle)

1.5708 rad

radian

rad

1 rad

revolution

rev

6.28319 rad

sign

0.523599 rad

Solid Angle

Unit Name

Symbol

SI Equivalent

spat

12.5664 sr

square arcminute

sq '

8.46159x10^-8 sr

square arcsec

sq "

2.35044x10^-11 sr

square degree

sq °

3.04614x10^-4 sr

steradian

1 sr

Area

Unit Name

Symbol

SI Equivalent

acre

ac, acre

4046.86 m²

are

100 m²

barn

1x10^-28 m²

barrel (US, liq.) per foot

bbl (US, liq.)/ft

0.391209 m²

barrel (US, liq.) per inch

bbl (US, liq.)/in

4.69451 m²

barrel (US, petrol) per foot

bbl (US, petrol)/ft

0.521612 m²

barrel (US, petrol) per inch

bbl (US, petrol)/in

6.25934 m²

centare

1 m²

circular inch

cin

5.06707x10^-4 m²

circular mil

cmil

5.06707x10^-10 m²

hectare

1x10⁴ m²

morgen (Dutch)

8244.35 m²

morgen (Prussian)

2532.24 m²

morgen (South Africa)

8565.3 m²

quarter section

6.47497x10⁵ m²

rood (UK)

1011.71 m²

section (square statute mile)

sq.mi, mi² (stat.)

2.58999x10⁶ m²

shed

1x10^-52 m²

square centimeter

cm²

1x10^-4 m²

square chain (engineer's)

sq. ch. (engineer's)

929.03 m²

square chain (Gunter's)

sq. ch. (Gunter's)

404.686 m²

square decameter

dam²

100 m²

square decimeter

dm²

1x10^-2 m²

square exameter

Em²

1x10³⁶ m²

square femtometer

fm²

1x10^-30 m²

square fermi

f²

1x10^-30 m²

square foot

ft²

9.2903x10^-2 m²

square gigameter

Gm²

1x10¹⁸ m²

square hectometer

hm²

1x10⁴ m²

square inch

in², sq. in

6.4516x10^-4 m²

Volume

Unit Name

Symbol

SI Equivalent

acre foot

acre-ft

1233.48 m³

bag (UK)

0.109106 m³

barrel (US, cranb.)

bbl (US, cranb.)

9.5471x10^-2 m³

barrel (US, liq.)

bbl (US, liq.)

0.11924 m³

barrel (US, petrol)

bbl (US, petrol)

0.158987 m³

board foot measure

fbm, B.M.

2.35974x10^-3 m³

bouteille

7.57682x10^-4 m³

bucket (UK)

bk (UK)

1.81844x10^-2 m³

bushel (UK)

bu (UK)

3.63687x10^-2 m³

bushel (US, dry)

bu (US, dry)

3.52391x10^-2 m³

butt (UK)

bt (UK)

0.490978 m³

centiliter

cl, cL

1x10^-5 m³

chaldron (UK)

chal (UK)

1.30927 m³

cran

0.170478 m³

cubic attometer

am³

1x10^-54 m³

cubic centimeter

cm³

1x10^-6 m³

cubic centimeter (Mohr cubic centimeter)

1.00238x10^-6 m³

cubic decameter

dam³

1000 m³

cubic decimeter

dm³

1x10^-3 m³

cubic exameter

Em³

1x10⁵⁴ m³

cubic femtometer

fm³

1x10^-45 m³

cubic foot

ft 3

2.83168x10^-2 m³

cubic gigameter

Gm³

1x10²⁷ m³

cubic hectometer

hm³

1x10⁶ m³

cubic inch

in 3

1.63871x10^-5 m³

cubic kilometer

km³

1x10⁹ m³

cubic megameter

Mm³

1x10¹⁸ m³

cubic meter

m³

1 m³

cubic micrometer

µm³

1x10^-18 m³

cubic millimeter

mm³

1x10^-9 m³

Length

Unit Name

Symbol

SI Equivalent

a.u. of length

a.u., a 0, b

5.29177x10^-11 m

angstrom

1x10^-10 m

arcmin

2.90888x10^-4 m

astronomical unit

AU, UA

1.49598x10¹¹ m

attometer

1x10^-18 m

barleycorn (UK)

8.46667x10^-3 m

bohr (first Bohr radius)

a 0 , b

5.29177x10^-11 m

bolt (US cloth)

36.576 m

button (UK)

line (UK)

2.11667x10^-3 m

button (US)

line (US)

6.35x10^-4 m

cable length (int.)

185.2 m

cable length (UK)

185.318 m

cable length (US)

219.456 m

caliber (centiinch)

caliber, cin

2.54x10^-4 m

centimeter

1x10^-2 m

chain (engineer's)

30.48 m

chain (Gunter's)

20.1168 m

chain (Ramsden's)

30.48 m

chain (surveyor's)

20.1168 m

cubit (UK)

0.4572 m

decameter

dam

10 m

decimeter

0.1 m

electron classical radius

r e

2.81794x10^-15 m

ell

1.143 m

ems (pica)

4.2175x10^-3 m

exameter

1x10¹⁸ m

fathom

fath

1.8288 m

femtometer

1x10^-15 m

fermi

F, f

1x10^-15 m

first Bohr radius

a 0, b , a.u.

5.29177x10^-11 m