Joules to Foot-pounds Force Converter
1 joule ≈ 0.737562149 foot-pounds force
Energy and torque share these dimensions. For fastener torque see the Torque category, where the same quantity is written lbf·ft.
1 joule equals 0.737562 foot-pounds force
How to convert joules to foot-pounds force
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.
ft·lbf = J ÷ 1.355817948One foot-pound force corresponds to 1.355817948 joules, so divide by that figure. Displayed constants may be rounded; the converter uses the stored factor before rounding the result.
7.37562 ft·lbf ≈ 10 ÷ 1.355817948Energy and torque share these dimensions. For fastener torque see the Torque category, where the same quantity is written lbf·ft.
Joules to foot-pounds force conversion table
Common values in joules, converted to foot-pounds force.
| Joules (J) | Foot-pounds force (ft·lbf) |
|---|---|
| 1 | 0.73756215 |
| 2 | 1.4751243 |
| 3 | 2.2126864 |
| 4 | 2.9502486 |
| 5 | 3.6878107 |
| 10 | 7.3756215 |
| 20 | 14.751243 |
| 25 | 18.439054 |
| 50 | 36.878107 |
| 100 | 73.756215 |
| 250 | 184.39054 |
| 500 | 368.78107 |
| 1,000 | 737.56215 |
About these units
jouleJ
The SI derived unit of energy: one newton acting through one metre.
foot-pound forceft·lbf
The work done by one pound-force acting through one foot.
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.