Kilojoules to Foot-pounds Converter
One Kilojoule equals 737.5621493 Foot-pounds (1 kJ = 737.5621493 ft-lb). Multiply a Kilojoule value by 737.5621493 to get the equivalent in Foot-pounds. Enter your value in the calculator above. The formula and examples below show how to calculate it by hand.
Formula
ft-lb = kJ × 737.5621493
Multiply the Kilojoule value by 737.5621493 to get the equivalent value in Foot-pounds.
Example Conversions
1 Kilojoule (kJ)
737.5621493 Foot-pound (ft-lb)
5 Kilojoule (kJ)
3687.810746 Foot-pound (ft-lb)
10 Kilojoule (kJ)
7375.621493 Foot-pound (ft-lb)
25 Kilojoule (kJ)
18439.05373 Foot-pound (ft-lb)
100 Kilojoule (kJ)
73756.21493 Foot-pound (ft-lb)
Conversion Table
| Kilojoule (kJ) | Foot-pound (ft-lb) |
|---|---|
| 0.1 | 73.75621493 |
| 0.5 | 368.7810746 |
| 1 | 737.5621493 |
| 2 | 1475.124299 |
| 5 | 3687.810746 |
| 10 | 7375.621493 |
| 25 | 18439.05373 |
| 50 | 36878.10746 |
| 100 | 73756.21493 |
| 250 | 184390.5373 |
| 500 | 368781.0746 |
| 1000 | 737562.1493 |
How to Convert Manually
Use these steps to convert Kilojoule values to Foot-pound without the calculator.
- Write down the value in Kilojoule (kJ) that you want to convert.
- Multiply that value by 737.5621493.
- For example, 10 Kilojoules × 737.5621493 = 7375.621493 Foot-pounds.
- Label the result as Foot-pound (ft-lb).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Kilojoule and one Foot-pound.
About Kilojoule and Foot-pound
The kilojoule is 1,000 joules. Food energy in Australia, Europe, and most metric countries is labeled in kilojoules alongside or instead of calories. The foot-pound is about 1.3558 joules, the work of one pound-force through one foot. US mechanical engineering and firearm muzzle energy use foot-pounds. One Kilojoule equals 737.5621493 Foot-pounds (1 kJ = 737.5621493 ft-lb). Kilojoule is used in food labels outside the US and in exercise energy expenditure. Foot-pound is used in US mechanical engineering.
Precision and Rounding:Energy factors mix exact definitions (1 kWh = 3,600,000 J; 1 cal = 4.184 J thermochemical) with measured conventions (1 BTU ≈ 1,055.056 J). Nutrition and utility bills round to whole units; engineering heat calculations should keep the full factor until the final step.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15Kilojoules equals11063.43224Foot-pounds.
15 kJ × 737.5621493 = 11063.43224 ft-lb
FAQ
How do I convert Kilojoule to Foot-pound?
Multiply the Kilojoule value by 737.5621493 to get the equivalent value in Foot-pounds.
What is the formula for Kilojoule to Foot-pound?
The formula is ft-lb = kJ × 737.5621493.
How many Foot-pounds are in 1 Kilojoule?
1 Kilojoule equals 737.5621493 Foot-pounds.
Can I convert Foot-pound back to Kilojoule?
Yes. 1 Foot-pound equals 0.001355817948 Kilojoules, and the related converter can reverse the calculation.
What are common names for Kilojoule and Foot-pound?
Kilojoule is shown as kJ and may also be searched as kilojoule, kilojoules. Foot-pound is shown as ft-lb and may also be searched as foot-pound, foot pound, ft·lb.
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