Convert foot-pounds to kilojoules
Foot-pound (ft·lb) to kilojoule (kJ). One foot-pound equals 0.001356 kilojoules.
Formula
Foot-pound to kilojoule conversion table
| Foot-pounds | Kilojoules | Kilojoules | Foot-pounds |
|---|---|---|---|
| 1 ft·lb | 0.001356 kJ | 1 kJ | 737.56 ft·lb |
| 2 ft·lb | 0.002712 kJ | 2 kJ | 1475.12 ft·lb |
| 3 ft·lb | 0.004067 kJ | 3 kJ | 2212.69 ft·lb |
| 5 ft·lb | 0.006779 kJ | 5 kJ | 3687.81 ft·lb |
| 10 ft·lb | 0.013558 kJ | 10 kJ | 7375.62 ft·lb |
| 20 ft·lb | 0.027116 kJ | 20 kJ | 14751.24 ft·lb |
| 50 ft·lb | 0.067791 kJ | 50 kJ | 36878.11 ft·lb |
| 100 ft·lb | 0.135582 kJ | 100 kJ | 73756.21 ft·lb |
| 500 ft·lb | 0.677909 kJ | 500 kJ | 368781.07 ft·lb |
| 1000 ft·lb | 1.3558 kJ | 1000 kJ | 737562.15 ft·lb |
To convert foot-pounds to kilojoules, divide the number of foot-pounds by 737.56. One foot-pound equals 0.001356 kilojoules, and one kilojoule equals 737.56 foot-pounds, so the relationship is fixed and exact. As a worked example, 10 ft·lb comes to 0.013558 kJ. Enter your own figure in the converter above to get an instant answer, or use the swap button to flip the direction. This is a energy conversion, and like every tool on UnitGlide it runs locally in your browser with no account or upload required. The table further down shows a range of common foot-pound values already worked out in kilojoules, plus the reverse kilojoule to foot-pound direction, which is handy for quick reference or double-checking a result by hand.
Frequently asked questions
How many kilojoules are in a foot-pound?
One foot-pound equals 0.001356 kilojoules. The ratio is constant, so you can multiply any number of foot-pounds by 0.001356 to get kilojoules.
What is the formula to convert foot-pounds to kilojoules?
Use kilojoules = foot-pounds ÷ 737.56. UnitGlide applies this exact formula for every value, so results stay accurate across the whole range.
How do I convert kilojoules back to foot-pounds?
Go the other way by using one kilojoule equals 737.56 foot-pounds. You can also press the swap button in the converter above to flip the direction in one click.
Is this foot-pound to kilojoule converter accurate?
Yes. It uses internationally defined SI conversion factors, as maintained by the BIPM, and all math runs in your browser so nothing is rounded away on a server. For everyday use the displayed precision is more than enough.