Foot-pound to Joule Converter
Convert foot-pounds to joules with this free energy converter. The exact relationship used on this page is 1 foot-pound = 1.35581794833 joules. Type any number — the result updates instantly, works on phones and desktops, and is ready to copy into homework, a spec sheet, or a shopping list.
Formula: Joule = Foot-pound × 1.35581794833
How to convert foot-pounds to joules
- Enter the value in foot-pounds in the converter.
- Read the equivalent amount in joules.
- Use the swap link if you need joule to foot-pound instead.
- Check the table for common values without typing.
Worked examples
- 1 ft·lb = 1.355817948 J
- 5 ft·lb = 6.779089742 J
- 10 ft·lb = 13.55817948 J
- 25 ft·lb = 33.89544871 J
Conversion table
Common foot-pounds values converted to joules.
| ft·lb | J |
|---|---|
| 1 | 1.355817948 |
| 2 | 2.711635897 |
| 3 | 4.067453845 |
| 4 | 5.423271793 |
| 5 | 6.779089742 |
| 6 | 8.13490769 |
| 7 | 9.490725638 |
| 8 | 10.84654359 |
| 9 | 12.20236153 |
| 10 | 13.55817948 |
| 20 | 27.11635897 |
| 50 | 67.79089742 |
| 100 | 135.5817948 |
| 250 | 338.9544871 |
| 500 | 677.9089742 |
| 1,000 | 1,355.817948 |
About this conversion
Foot-pound (ft·lb) and Joule (J) are both energy units. Energy converters connect food labels (kcal), electricity bills (kWh), physics (joules), and heating (BTU). Bookmark this URL when you convert foot-pounds to joules often, then explore related pairs in the same category if you need a different target unit.
Need the other direction? Open the joule to foot-pound converter.
FAQ
How many joules are in 1 foot-pound?+
1 foot-pound equals 1.35581794833 joules.
What is the formula to convert foot-pounds to joules?+
Joule = Foot-pound × 1.35581794833
How do I convert foot-pounds to joules by hand?+
Multiply the foot-pound value by 1.35581794833. Example: 10 foot-pounds × 1.35581794833 = 13.5581794833 joules.
Is this ft·lb to J converter accurate?+
Yes. Linear conversions use internationally agreed factors relative to SI. Temperature and inverse fuel units use the standard offset or reciprocal formulas, not a guessed scale factor.