Convert foot-pounds to BTU
1 ft·lb = 0.00128507 BTU. Change the amount below, or read the formula and the reference table further down.
1 foot-pound equals
BTU
1 ft·lb = 0.00128507 BTU
The formula
Foot-pounds and BTU both measure energy from the same zero, so a single multiplier does the job.
BTU = ft·lb × 0.0012850675
Going the other way? Convert BTU to foot-pounds.
Foot-pounds to BTU table
Common values, rounded for reading.
| Foot-pounds (ft·lb) | BTU (BTU) |
|---|---|
| 1 | 0.001285 |
| 2 | 0.00257 |
| 3 | 0.003855 |
| 4 | 0.00514 |
| 5 | 0.006425 |
| 6 | 0.00771 |
| 7 | 0.008995 |
| 8 | 0.010281 |
| 9 | 0.011566 |
| 10 | 0.012851 |
| 15 | 0.019276 |
| 20 | 0.025701 |
| 25 | 0.032127 |
| 30 | 0.038552 |
| 40 | 0.051403 |
| 50 | 0.064253 |
| 75 | 0.09638 |
| 100 | 0.128507 |
| 250 | 0.321267 |
| 500 | 0.642534 |
| 1,000 | 1.2851 |
Questions people ask
- How many BTU are in a foot-pound?
- One foot-pound equals 0.0012850675 BTU.
- How do I convert foot-pounds to BTU by hand?
- Multiply the number of foot-pounds by 0.0012850675. For a rough check, 0.001 is close enough for most everyday use.
- What is 1 foot-pound in BTU?
- 1 foot-pound is 0.00128507 BTU.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.