Foot-pounds to BTU Converter
How to convert foot-pounds to BTU
BTU = foot-pounds ÷ 778.169262
To convert foot-pounds to BTU, divide the number of foot-pounds by 778.169262.
1 ft·lbf = 0.00128506746 BTU
Examples
- 100 ft·lbf ÷ 778.169262 = 0.128506746 BTU
- 1,000 ft·lbf ÷ 778.169262 = 1.28506746 BTU
Good to know
This is the foot-pound as a unit of energy. The same name is commonly used for torque (properly the pound-foot, lbf·ft), which is a different quantity and converts to newton-meters, not joules.
This is the International Table BTU, 1055.05585262 J. Other definitions exist, such as the thermochemical BTU (about 1054.35 J); they differ from it by up to about 0.5%.
Foot-pounds to BTU conversion table
| Foot-pounds (ft·lbf) | BTU |
|---|---|
| 1 ft·lbf | 0.00128506746 BTU |
| 2 ft·lbf | 0.00257013493 BTU |
| 5 ft·lbf | 0.00642533732 BTU |
| 10 ft·lbf | 0.0128506746 BTU |
| 20 ft·lbf | 0.0257013493 BTU |
| 50 ft·lbf | 0.0642533732 BTU |
| 100 ft·lbf | 0.128506746 BTU |
| 200 ft·lbf | 0.257013493 BTU |
| 250 ft·lbf | 0.321266866 BTU |
| 500 ft·lbf | 0.642533732 BTU |
| 1,000 ft·lbf | 1.28506746 BTU |
| 2,000 ft·lbf | 2.57013493 BTU |
| 2,500 ft·lbf | 3.21266866 BTU |
| 5,000 ft·lbf | 6.42533732 BTU |
| 10,000 ft·lbf | 12.8506746 BTU |
Unit definitions
- Foot-pound (ft·lbf)
- A foot-pound (foot-pound force) is the work done by a force of one pound-force over a distance of one foot, exactly 1.3558179483314004 joules. It is used in the United States for muzzle energy and mechanical work.
- BTU
- The British thermal unit is roughly the heat needed to raise one pound of water by one degree Fahrenheit. The International Table BTU is exactly 1055.05585262 joules, and it is used for heating and cooling in the United States.