Foot-pounds Force to Kilojoules Converter
1 foot-pound force ≈ 0.00135581795 kilojoules
Energy and torque share these dimensions. For fastener torque see the Torque category, where the same quantity is written lbf·ft.
1 foot-pound force equals 0.00135582 kilojoules
How to convert foot-pounds force to kilojoules
Calories here are thermochemical (4.184 J), while BTU uses the International Table definition. A kilowatt-hour is energy (3.6 MJ), not power; a food Calorie is a kilocalorie.
kJ = ft·lbf × 0.001355817948One foot-pound force is 0.001355817948 kilojoules, so a single multiplication converts any value.
0.0135582 kJ ≈ 10 × 0.001355817948Energy and torque share these dimensions. For fastener torque see the Torque category, where the same quantity is written lbf·ft.
Foot-pounds force to kilojoules conversion table
Common values in foot-pounds force, converted to kilojoules.
| Foot-pounds force (ft·lbf) | Kilojoules (kJ) |
|---|---|
| 1 | 0.0013558179 |
| 2 | 0.0027116359 |
| 3 | 0.0040674538 |
| 4 | 0.0054232718 |
| 5 | 0.0067790897 |
| 10 | 0.013558179 |
| 20 | 0.027116359 |
| 25 | 0.033895449 |
| 50 | 0.067790897 |
| 100 | 0.13558179 |
| 250 | 0.33895449 |
| 500 | 0.67790897 |
| 1,000 | 1.3558179 |
About these units
foot-pound forceft·lbf
The work done by one pound-force acting through one foot.
kilojoulekJ
One thousand joules. The metric food-energy unit outside the United States.
Sources and precision
Table results are rounded to 8 significant digits; formula constants may be rounded to 10. Worked example answers use 6 significant digits. The converter starts at 6 significant digits and lets you change display precision. Calculations use the stored factors without intermediate rounding. Exact unit definitions do not make an input measurement more precise; conventional and measured factors follow the assumptions stated here.