foot-pounds to kilojoules

Convert foot-pound to kilojoule — instant, free, with the formula shown.

1 ft·lb=0.001356 kJ

How to convert foot-pound to kilojoule

To convert foot-pound to kilojoule, multiply by 0.00135582:

kJ = ft·lb × 0.00135582

For example, 10 ft·lb × 0.001356 = 0.013558 kJ.

ft·lb to kJ conversion table

foot-pounds (ft·lb)	kilojoules (kJ)
1 ft·lb	0.001356 kJ
2 ft·lb	0.002712 kJ
5 ft·lb	0.006779 kJ
10 ft·lb	0.013558 kJ
25 ft·lb	0.033895 kJ
50 ft·lb	0.067791 kJ
100 ft·lb	0.135582 kJ
250 ft·lb	0.338954 kJ
500 ft·lb	0.677909 kJ
1000 ft·lb	1.355818 kJ

Reverse: Kilojoule to Foot-pound

Other foot-pound conversions

ft·lb → J ft·lb → cal ft·lb → kcal ft·lb → Wh ft·lb → kWh ft·lb → BTU ft·lb → thm ft·lb → eV

Convert to kilojoule from another unit

J → kJ cal → kJ kcal → kJ Wh → kJ kWh → kJ BTU → kJ thm → kJ eV → kJ

ft·lb to kJ — frequently asked

How many kilojoules are in 1 foot-pound?

1 foot-pound = 0.001356 kilojoules (ft·lb × 0.001356 = kJ).

What is the formula to convert foot-pound to kilojoule?

Multiply your foot-pound value by 0.00135582 to get kilojoule.

How do I convert 10 foot-pounds to kilojoules?

10 ft·lb = 0.013558 kJ. For 100 ft·lb the answer is 0.135582 kJ. Use the calculator on this page for any other value.

When to convert foot-pound to kilojoule

1Electricity bills (kWh)

2Nutrition labels (kcal / food cal)

3HVAC and heating (BTU, therms)

4Physics and chemistry (J, eV)

Energy conversion — common questions

Is a food calorie the same as a calorie?

No — a food 'Calorie' (capital C) actually means 1 kilocalorie = 1,000 small calories = 4,184 J. Nutrition labels typically write 'cal' meaning kcal.

How many joules in 1 kWh?

1 kWh = 3,600,000 J (3.6 MJ). Because 1 kW × 1 hour = 1,000 W × 3,600 s = 3,600,000 J.

What is a BTU?

British Thermal Unit — the energy required to raise 1 pound of water by 1 °F. 1 BTU ≈ 1,055 J.

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