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Energy
Megajoules to Foot-pounds
Convert megajoules (MJ) to foot-pounds (ft·lb). Type a value below to see the result update instantly. Reference table and formula included.
Calculator
1 MJ = 737561.03 ft·lb
Megajoules to Foot-pounds Conversion Table
Common values, ready to copy:
| megajoules | foot-pounds |
|---|---|
| 1 MJ | 737561.03 ft·lb |
| 2 MJ | 1.4751e+6 ft·lb |
| 5 MJ | 3.6878e+6 ft·lb |
| 10 MJ | 7.3756e+6 ft·lb |
| 25 MJ | 1.8439e+7 ft·lb |
| 50 MJ | 3.6878e+7 ft·lb |
| 100 MJ | 7.3756e+7 ft·lb |
| 1,000 MJ | 7.3756e+8 ft·lb |
Formula
foot-pounds = megajoules × 7.37561033e+5
Energy uses the SI joule. Food calories (kcal) are 1,000 small calories: 1 kcal = 4,184 J. 1 kWh = 3.6 MJ = 3,600,000 J. 1 BTU = 1,055.06 J.
About Megajoules and Foot-pounds
Megajoules (MJ): A million joules; the unit for larger-scale energy quantities. Common uses: Daily food intake (a typical adult consumes 8-10 MJ per day), fuel energy content (gasoline ≈ 34 MJ per liter), and industrial energy.
Foot-pounds (ft·lb): The work done lifting one pound through one foot against gravity; 1 ft·lb = 1.35582 J. Common uses: Torque specifications in US automotive contexts (lug nuts, bolt torque), and some US engineering work.
How the conversion works
Energy uses the SI joule. Food calories (kcal) are 1,000 small calories: 1 kcal = 4,184 J. 1 kWh = 3.6 MJ = 3,600,000 J. 1 BTU = 1,055.06 J.
The exact relationship is foot-pounds = megajoules × 7.37561033e+5, which the calculator at the top of this page applies in both directions. Type into either field and the other updates immediately.
When this conversion matters
Converting between megajoules and foot-pounds comes up wherever energy measurements move between systems — from one country's conventions to another's, from a scientific reference to a practical specification, or from one industry's working unit to another's. The calculator and reference table above cover the everyday range; for unusual values you can type any number into either field.