1 foot-pound to joules
1 ft·lb = 1.355818 J. Change the amount below, or read the formula and the reference table further down.
1 foot-pound equals
joules
1 ft·lb = 1.355818 J
The formula
Foot-pounds and joules both measure energy from the same zero, so a single multiplier does the job.
J = ft·lb × 1.35581795
Going the other way? Convert joules to foot-pounds.
Foot-pounds to joules table
Values either side of 1 ft·lb.
| Foot-pounds (ft·lb) | Joules (J) |
|---|---|
| -4 | -5.4233 |
| -3.5 | -4.7454 |
| -3 | -4.0675 |
| -2.5 | -3.3895 |
| -2 | -2.7116 |
| -1.5 | -2.0337 |
| -1 | -1.3558 |
| -0.5 | -0.677909 |
| 0 | 0 |
| 0.5 | 0.677909 |
| 1 | 1.3558 |
| 1.5 | 2.0337 |
| 2 | 2.7116 |
| 2.5 | 3.3895 |
| 3 | 4.0675 |
| 3.5 | 4.7454 |
| 4 | 5.4233 |
| 4.5 | 6.1012 |
| 5 | 6.7791 |
| 5.5 | 7.457 |
| 6 | 8.1349 |
Questions people ask
- How many joules are in a foot-pound?
- One foot-pound equals 1.35581795 joules.
- How do I convert foot-pounds to joules by hand?
- Multiply the number of foot-pounds by 1.35581795. For a rough check, 1.4 is close enough for most everyday use.
- What is 1 foot-pound in joules?
- 1 foot-pound is 1.355818 joules.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.