Foot-pound to Kilojoule
Convert Foot-pound to Kilojoule instantly. Free online engineering unit converter with exact formula, conversion table and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Converter
Engineering Converter
Convert common stress, force, torque, power, and energy units used in engineering.
Context values
Some unit families need one extra value for a physically accurate result.
Use the converter to see the formula.
Results update instantly for Foot-pound to Kilojoule conversions.
Reserved above the conversion cards and below the converter.
Formula
kJ = ft-lb × 0.00135582
ft-lb = kJ × 737.562
Conversion table
| 1 ft-lb | 0.00135582 kJ |
| 5 ft-lb | 0.00677909 kJ |
| 10 ft-lb | 0.0135582 kJ |
| 20 ft-lb | 0.0271164 kJ |
| 50 ft-lb | 0.0677909 kJ |
| 100 ft-lb | 0.135582 kJ |
| 500 ft-lb | 0.677909 kJ |
| 1000 ft-lb | 1.35582 kJ |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
What is the source unit in this conversion?
The source unit is the Foot-pound (ft-lb). Work from one pound-force over one foot.
What is the destination unit in this conversion?
The destination unit is the Kilojoule (kJ). Kilojoule is 1000 joule units.
How do I convert Foot-pound to Kilojoule?
Multiply the Foot-pound value by 0.00135582. For example, 10 ft-lb × 0.00135582 = 0.0135582 kJ.
Is the Foot-pound to Kilojoule conversion exact?
Yes. Both units belong to the same engineering measurement family (energy), so the ratio between them is a fixed, defined value rather than a measured approximation.
Where is this conversion commonly used?
It's used whenever a value expressed in Foot-pound needs to be compared with, or reported in, Kilojoule, such as in engineering, scientific, or industrial calculations.
Can I convert Kilojoule back to Foot-pound?
Yes. Multiply the Kilojoule value by 737.562 to get Foot-pound.
Reserved between the FAQ and the article so the page stays balanced.
About this conversion
This page converts Foot-pound (ft-lb) to Kilojoule (kJ) within the engineering converter.
Work from one pound-force over one foot. Kilojoule is 1000 joule units.
The formula is kJ = ft-lb × 0.00135582, based on each unit's fixed relationship to the energy base unit.
The conversion is exact, since it relies on a fixed numerical ratio between the two units rather than a measured or approximate value.
Use the calculator above for instant results, or the table below for common Foot-pound values already converted to Kilojoule.