| Name of quantity |
British system of units |
International system of units |SI) |
Other systems of units |
| Length: |
| inch |
In |
0.0254 m |
0.0254 m |
| foot |
ft |
0.3048 m |
0.3048 m |
| yard |
yd |
0.9144 m |
0.9144 m |
| statute mile |
mile |
1609.344 m |
1609.344 m |
| nautical mile |
- |
1852 m |
1852 m |
| Area: |
| square inch |
in2 |
6.4516-10-4
m2 |
6.4516 cm2 |
| square foot |
ft2 |
9.2903.10-2
m2 |
0.092903 m2 |
| square yard |
yd2 |
0.836127 m2 |
0.836127 m2 |
| Volume: |
| cubic inch |
in3 |
1.63871 •10-5
m3 |
16.3871 cm3 |
| cubic foot |
ft3 |
0.0283168 m3 |
28.3168 dm3 |
| cubic yard |
yd3 |
0.764555 m3 |
0.764555 m3 |
| gallon (USA) |
gal(US) |
3.78543 dm3 |
3.78543 dm3 |
| gallon (British) |
gal(UK) |
4.54609 dm3 |
4.54609 dm3 |
| Mass: |
| ounce (avoirdupois) |
oz |
28.3495 g |
28.3495 g |
| pound |
Ib |
0.45359237 kg |
0.45359237 kg |
| short (net) to |
sh tn |
907.185 kg |
907.185 kg |
| long (gross) ton |
ton |
1016.05 kg |
1016.05 kg |
| Specific volume: |
| cubic foot per pound |
ft3/lb |
0.06243 m3/kg |
0.06243 m3/kg |
| Density: |
| pound per cubic inch |
Ib/in3 |
27680 kg/m3 |
27680 kg/m3 |
| pound per cubic foot |
Ib/ft3 |
16.018 kg/m3 |
16.018 kg/m3 |
| pound per cubic yard |
Ib/yd3 |
0.59328 kg/m3 |
0.59328 kg/m3 |
| Pressure: |
| pound per square
inch |
Ib/in2 |
6894.76 Pa (pascal) |
703.1 kgf/m2 |
| Name of quantity |
British system of
units |
International system
of units (SI) |
Other systems of un |
| pound per square
foot |
Ib/ft2 |
47.8803 Pa (pascal) |
4.882 kgf/m2 |
| pound per square
yard |
Ib/yd2 |
5.320 Pa (pascal) |
0.5425 kgf/m2 |
| Temperature: |
| Fahrenheit degree |
•F |
К |
°c |
| thawing point of ice |
32°F |
273 К |
o°c |
| boiling point of
water |
212°F |
373 К |
100°c |
| Velocity: |
| foot per second |
ft/s |
0.3048 m/s |
0.3048 m/s |
| Force, weight:
poundal |
pdl |
0.138255 N (newton) |
0.014098 kgf |
| pound-force |
Ibf |
4.44822 N (newton) |
0.4537 kgf |
| Power: |
| foot-pound-force per
second |
ft-lbf/s |
1.35582 W |
0.1383 kgf m/s |
| horsepower (British) |
HP |
745.7 W |
76.04 kgf'm/s |
| Quantity of heat: |
| British thermal unit |
Btu |
1055.06 J |
0.252 kcal |
| Thermodynamic potential (specific): |
| British thermal unit
per pound |
Btu/lb |
2326 J/kg |
0.5556 kcal/kg |