Convert energy units — joules, kilowatt-hours, calories, BTU, electron volts and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 MJ | 737.561 ft·lb | |
| 0.01 MJ | 7375.61 ft·lb | |
| 0.1 MJ | 73756.1 ft·lb | |
| 1 MJ | 737561 ft·lb | |
| 5 MJ | 3.68781e+06 ft·lb | |
| 10 MJ | 7.37561e+06 ft·lb | |
| 50 MJ | 3.68781e+07 ft·lb | |
| 100 MJ | 7.37561e+07 ft·lb | |
| 1000 MJ | 7.37561e+08 ft·lb |
Formula: Foot-Pound = Megajoule × 737,600
Multiply any megajoule value by 737,600 to get foot-pound.
Reverse: Megajoule = Foot-Pound × 1.3558e-6
Common megajoule values — factor: 1 MJ = 737,600 ft·lb
| Megajoule (MJ) | Foot-Pound (ft·lb) | Context |
|---|---|---|
| 0.001 MJ | 737.6 ft·lb | 1 kJ |
| 0.01 MJ | 7,376 ft·lb | 10 kJ |
| 0.1 MJ | 7.376e+04 ft·lb | 100 kJ |
| 1 MJ | 7.376e+05 ft·lb | 1 MJ |
| 3.6 MJ | 2.655e+06 ft·lb | 1 kWh |
| 10 MJ | 7.376e+06 ft·lb | 10 kWh |
| 34 MJ | 2.508e+07 ft·lb | 1L petrol |
| 100 MJ | 7.376e+07 ft·lb | ~28 kWh |
| 360 MJ | 2.655e+08 ft·lb | 100 kWh |
| 1,000 MJ | 7.376e+08 ft·lb | ~278 kWh |
| 4,600 MJ | 3.393e+09 ft·lb | 1 tonne TNT |
| 1e+04 MJ | 7.376e+09 ft·lb | ~2.8 MWh |
| 1e+05 MJ | 7.376e+10 ft·lb | ~28 MWh |
| 1e+06 MJ | 7.376e+11 ft·lb | ~278 MWh |
| 1.000e+09 MJ | 7.376e+14 ft·lb | ~278 GWh |
1 MJ = 737,600 ft·lb. Memorize for instant estimates.
Use 737,600 as a quick mental multiplier.
Multiply result by 1.3558e-6 to recover the original MJ value.
Measures fuel energy content — 1 liter of petrol ≈ 34 MJ.
Compares battery pack energy in MJ and kWh for range calculations.
Quantifies explosive yield — 1 kg TNT ≈ 4.6 MJ.
Calculates daily/annual energy yield of solar and wind in MJ.
Compares fuel energy costs across transport modes in MJ/km.
Models annual heating and cooling energy demand in MJ.
The megajoule (MJ) equals 1,000,000 joules and is used for large-scale energy measurements in engineering, transportation, and industrial processes.
One liter of petrol contains about 34 MJ of chemical energy. A bolt of lightning releases about 1-5 MJ. An adult's daily food intake is roughly 8-10 MJ. Electric vehicle batteries are typically rated at 40-100 MJ (11-28 kWh).
Interesting fact: The kinetic energy of a 1,000 kg car traveling at 100 km/h is about 0.385 MJ. TNT explosive releases about 4.6 MJ per kilogram when detonated.
The foot-pound (ft·lb) is an Imperial unit of energy equal to the work done when a force of one pound-force moves an object one foot, equaling 1.35582 joules. It has been used in British and American engineering since the 18th century.
Foot-pounds are standard in US mechanical engineering for torque specifications, engine output (often ft·lb of torque), and ballistic energy measurements. Rifle bullet energies are commonly quoted in foot-pounds in American publications.
Interesting fact: A typical 9mm pistol bullet has about 350 ft·lb of muzzle energy. The torque specification for tightening a car wheel bolt is typically 80–100 ft·lb. One horsepower equals 550 ft·lb per second.
Converting megajoule to foot-pound is common across energy, nutrition, engineering, and science. Different sectors use different energy units — joules in physics, kcal in nutrition, kWh in electricity, and BTU in HVAC — making accurate conversion essential for cross-disciplinary work and international comparisons.
Quick reference: 5 MJ = 3.688e+06 ft·lb and 10 MJ = 7.376e+06 ft·lb. Reverse: 1 ft·lb = 1.3558e-6 MJ. Exact factor: 1 MJ = 737,600 ft·lb.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.