Foot-pounds to Joules (ft·lb to J)
Free online foot-pound to joule converter. Type a value, get an instant exact result — plus the formula, a ready-made conversion table, and reverse conversion.
ENERGY CONVERTER — INSTANT RESULT
Formula: multiply the foot-pound value by 1.35581795 — i.e. J = ft·lb × 1.35581795
Quick check: 1 ft·lb = 1.35581795 J
Quick check: 1 ft·lb = 1.35581795 J
Foot-pounds to Joules conversion table
| Foot-pounds (ft·lb) | Joules (J) |
|---|---|
| 1 ft·lb | 1.35581795 J |
| 2 ft·lb | 2.7116359 J |
| 3 ft·lb | 4.06745384 J |
| 4 ft·lb | 5.42327179 J |
| 5 ft·lb | 6.77908974 J |
| 6 ft·lb | 8.13490769 J |
| 7 ft·lb | 9.49072564 J |
| 8 ft·lb | 10.84654358 J |
| 9 ft·lb | 12.20236153 J |
| 10 ft·lb | 13.55817948 J |
| 15 ft·lb | 20.33726922 J |
| 20 ft·lb | 27.11635896 J |
| 25 ft·lb | 33.8954487 J |
| 30 ft·lb | 40.67453844 J |
| 40 ft·lb | 54.23271792 J |
| 50 ft·lb | 67.7908974 J |
| 75 ft·lb | 101.6863461 J |
| 100 ft·lb | 135.5817948 J |
| 250 ft·lb | 338.954487 J |
| 500 ft·lb | 677.908974 J |
| 1,000 ft·lb | 1,355.817948 J |
How to convert foot-pounds to joules
To convert foot-pounds to joules, multiply the amount in foot-pounds by 1.35581795. For example, 10 ft·lb = 13.55817948 J. To convert in the other direction, divide by the same factor, or use the ⇄ swap button above.
Convert between joules, calories, BTU, kilowatt-hours and foot-pounds. The joule is the SI unit of energy; the thermochemical calorie is defined as exactly 4.184 J.
Frequently asked questions
How many joules are in one foot-pound?
One foot-pound is exactly 1.35581795 joules.
How do I convert ft·lb to J?
Multiply the ft·lb value by 1.35581795 to get J. The converter at the top of this page does this automatically and works in both directions.
How much is 100 foot-pounds in joules?
100 foot-pounds equals 135.5817948 joules.