Kilojoule is 1000 joule units.
Kilojoules to Foot-pounds Converter — kJ to ft-lb
Convert Kilojoule (kJ) to Foot-pound (ft-lb) using the exact conversion factor (1 kilojoule = 737.5621493 foot-pound). See the formula, worked examples, and conversion table.
Kilojoules to Foot-pounds converter
Converter
Energy Converter
Convert joules, calories, kilowatt-hours, BTU, electronvolts, therms, and mechanical work units.
Context values
Some unit families need one extra value for a physically accurate result.
Work from one pound-force over one foot.
Result = input x 1000 / 1.355817948.
Energy uses the joule as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Kilojoules to Foot-pounds
Kilojoule and Foot-pound both measure energy, and the conversion is especially useful for comparing nutrition labels (kilocalories) against scientific energy figures (joules). Specifically: Kilojoule is 1000 joule units, and work from one pound-force over one foot.
Formula
foot-pounds = kilojoules × 737.562149277
This factor comes from each unit's defined relationship to the category's base unit: 1 kilojoule equals 1000 base units, and 1 foot-pound equals 1.35581794833 base units, so dividing one by the other gives the direct kilojoule-to-foot-pound factor of 737.562149277.
Simple example
1 kJ × 737.5621493 = 737.5621493 ft-lb
1 kilojoule = 737.5621493 foot-pounds.
Real-world example
100 kJ × 737.5621493 = 73,756.21493 ft-lb
100 kilojoules = 73,756.21493 foot-pounds.
Conversion table
| Kilojoule (kJ) | Foot-pound (ft-lb) |
|---|---|
| 1 kJ | 737.5621493 ft-lb |
| 10 kJ | 7,375.621493 ft-lb |
| 100 kJ | 73,756.21493 ft-lb |
| 500 kJ | 368,781.0746 ft-lb |
| 1,000 kJ | 737,562.1493 ft-lb |
| 2,000 kJ | 1,475,124.299 ft-lb |
Reverse conversion: Foot-pound to Kilojoule
737.5621493 ft-lb × 0.001355817948 = 1 kJ
737.5621493 foot-pounds = 1 kilojoules.
kilojoules = foot-pounds × 0.00135581794833
For a page dedicated to this direction, see Foot-pound to Kilojoule.
Understanding the Kilojoule (kJ)
Kilojoule is 1000 joule units.
Understanding the Foot-pound (ft-lb)
Work from one pound-force over one foot.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many foot-pounds are in 1 kilojoule?
1 kilojoule equals 737.5621493 foot-pounds, using the exact defined conversion factor rather than an estimate.
How do I convert kilojoule to foot-pound?
Multiply the kilojoule value by 737.5621493. The converter above does this instantly to whatever precision you set.
How do I convert foot-pound back to kilojoule?
Use the reverse factor: 1 foot-pound equals 0.0013558179 kilojoules. You can also use the swap control in the converter above to flip the direction instantly.
What is a kilojoule?
Kilojoule (kJ) is a unit of energy.
What is a foot-pound?
Foot-pound (ft-lb) is a unit of energy.
Is the kilojoule to foot-pound conversion exact?
Yes. Both kilojoule and foot-pound are defined by fixed standards rather than physical artifacts, so the factor of 737.5621493 used above is exact to as many digits as you choose to display.