Foot-pounds to Joules Converter
Convert foot-pound to joule instantly. Type a value below — the result updates as you type.
When you need to convert foot-pound to joule
Energy conversions appear on nutrition labels, utility bills and appliance specs, letting you compare food energy, electricity use and heating output on a common scale.
Typical values: 0.5 ft·lb is about 0.6779 J, and 100 ft·lb works out to roughly 135.5818 J. Because the ratio is fixed at 1.3558, you can scale any amount linearly — doubling the foot-pounds doubles the joules.
Food packaging, power meters and heating equipment each prefer different energy units, so converting makes them directly comparable.
How to convert foot-pound to joule
One foot-pound equals 1.3558 joules. To convert, multiply the number of foot-pounds by 1.3558:
joules = foot-pounds × 1.3558
For example, 10 foot-pounds × 1.3558 = 13.5582 joules.
Foot-pounds to joules conversion table
| Energy (ft·lb) | Joules (J) |
|---|---|
| 1 ft·lb | 1.3558 J |
| 2 ft·lb | 2.7116 J |
| 3 ft·lb | 4.0675 J |
| 5 ft·lb | 6.7791 J |
| 10 ft·lb | 13.5582 J |
| 20 ft·lb | 27.1164 J |
| 50 ft·lb | 67.7909 J |
| 100 ft·lb | 135.5818 J |
FAQ
How many joules are in a foot-pound?
One foot-pound = 1.3558 joules.
How do I convert joules back to foot-pounds?
Divide by 1.3558, or use the joules to foot-pounds converter.