Foot-pounds to Joules Converter
How to convert foot-pounds to joules
joules = foot-pounds × 1.35581795
To convert foot-pounds to joules, multiply the number of foot-pounds by 1.35581795.
1 ft·lbf = 1.35581795 J
Examples
- 100 ft·lbf × 1.35581795 = 135.581795 J
- 1,000 ft·lbf × 1.35581795 = 1,355.81795 J
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.
Foot-pounds to joules conversion table
| Foot-pounds (ft·lbf) | Joules (J) |
|---|---|
| 1 ft·lbf | 1.35581795 J |
| 2 ft·lbf | 2.7116359 J |
| 5 ft·lbf | 6.77908974 J |
| 10 ft·lbf | 13.5581795 J |
| 20 ft·lbf | 27.116359 J |
| 50 ft·lbf | 67.7908974 J |
| 100 ft·lbf | 135.581795 J |
| 200 ft·lbf | 271.16359 J |
| 250 ft·lbf | 338.954487 J |
| 500 ft·lbf | 677.908974 J |
| 1,000 ft·lbf | 1,355.81795 J |
| 2,000 ft·lbf | 2,711.6359 J |
| 2,500 ft·lbf | 3,389.54487 J |
| 5,000 ft·lbf | 6,779.08974 J |
| 10,000 ft·lbf | 13,558.1795 J |
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.
- Joule (J)
- The joule is the SI unit of energy, equal to the work done by a force of one newton over one meter, or one watt for one second.