Marks Calc

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·lb0.001356 kJ
2 ft·lb0.002712 kJ
5 ft·lb0.006779 kJ
10 ft·lb0.013558 kJ
25 ft·lb0.033895 kJ
50 ft·lb0.067791 kJ
100 ft·lb0.135582 kJ
250 ft·lb0.338954 kJ
500 ft·lb0.677909 kJ
1000 ft·lb1.355818 kJ
Reverse: Kilojoule to Foot-pound

Other foot-pound conversions

Convert to kilojoule from another unit

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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