Convert Foot-pound to Megajoule
1 foot-pound = 0.000001355818 megajoule (MJ). For example, 10 foot-pound = 0.00001355818 megajoule and 100 foot-pound = 0.0001355818 megajoule. Type any value below to convert foot-pound to megajoule both ways — it runs entirely in your browser.
Torque vs energy: Foot-pound (ft·lbf) is used both as a unit of ENERGY — where 1 N·m = 1 joule exactly — and as a unit of TORQUE (a twisting force × distance). This page converts the ENERGY meaning, so the figures above are correct for work and heat. A newton-metre of torque is a different physical quantity and does NOT convert into joules, kilowatt-hours or calories.
Quick answer: Foot-pound to Megajoule
1 Foot-pound = 0.000001355818 Megajoule (ft·lbf → MJ). To convert foot-pound to megajoule, multiply by 0.000001355818. To convert megajoule to foot-pound, multiply by 737,562.1. The converter at the top does this instantly and both ways; the sections below give the formula, worked examples, a full conversion chart and answers to the most common foot-pound-to-megajoule questions.
How to convert Foot-pound to Megajoule
To convert foot-pound to megajoule, multiply the number of foot-pound by the conversion factor 0.000001355818, because 1 ft·lbf = 0.000001355818 MJ. The conversion is linear, so the same factor works for any value — whole numbers, decimals or fractions. For the reverse direction, 1 MJ = 737,562.1 ft·lbf, so you divide by 0.000001355818 (or multiply by 737,562.1) to turn megajoule back into foot-pound.
MJ = ft·lbf × 0.000001355818 ·
ft·lbf = MJ × 737,562.1
- Write down the value you want to convert, in foot-pound.
- Multiply it by 0.000001355818.
- The result is the same area/length/quantity expressed in megajoule.
Foot-pound to Megajoule — worked examples
Each row shows the exact arithmetic so you can follow the conversion step by step. For example, 5 foot-pound is 0.00000677909 megajoule because 5 ft·lbf × 0.000001355818 = 0.00000677909 MJ.
| Foot-pound | Calculation | Megajoule |
|---|---|---|
| 1 ft·lbf | 1 ft·lbf × 0.000001355818 = 0.000001355818 MJ | 0.000001355818 MJ |
| 2 ft·lbf | 2 ft·lbf × 0.000001355818 = 0.000002711636 MJ | 0.000002711636 MJ |
| 3 ft·lbf | 3 ft·lbf × 0.000001355818 = 0.000004067454 MJ | 0.000004067454 MJ |
| 5 ft·lbf | 5 ft·lbf × 0.000001355818 = 0.00000677909 MJ | 0.00000677909 MJ |
| 7 ft·lbf | 7 ft·lbf × 0.000001355818 = 0.000009490726 MJ | 0.000009490726 MJ |
| 10 ft·lbf | 10 ft·lbf × 0.000001355818 = 0.00001355818 MJ | 0.00001355818 MJ |
| 12 ft·lbf | 12 ft·lbf × 0.000001355818 = 0.00001626982 MJ | 0.00001626982 MJ |
| 15 ft·lbf | 15 ft·lbf × 0.000001355818 = 0.00002033727 MJ | 0.00002033727 MJ |
| 20 ft·lbf | 20 ft·lbf × 0.000001355818 = 0.00002711636 MJ | 0.00002711636 MJ |
| 25 ft·lbf | 25 ft·lbf × 0.000001355818 = 0.00003389545 MJ | 0.00003389545 MJ |
| 50 ft·lbf | 50 ft·lbf × 0.000001355818 = 0.0000677909 MJ | 0.0000677909 MJ |
| 100 ft·lbf | 100 ft·lbf × 0.000001355818 = 0.0001355818 MJ | 0.0001355818 MJ |
Common Foot-pound to Megajoule conversions
These are the foot-pound-to-megajoule values people look up most often. Every figure is computed from the exact factor, so you can rely on them for quick reference:
- 1 foot-pound = 0.000001355818 megajoule
- 2 foot-pound = 0.000002711636 megajoule
- 2.5 foot-pound = 0.000003389545 megajoule
- 3 foot-pound = 0.000004067454 megajoule
- 4 foot-pound = 0.000005423272 megajoule
- 5 foot-pound = 0.00000677909 megajoule
- 6 foot-pound = 0.000008134908 megajoule
- 7 foot-pound = 0.000009490726 megajoule
- 8 foot-pound = 0.00001084654 megajoule
- 9 foot-pound = 0.00001220236 megajoule
- 10 foot-pound = 0.00001355818 megajoule
- 12 foot-pound = 0.00001626982 megajoule
- 15 foot-pound = 0.00002033727 megajoule
- 20 foot-pound = 0.00002711636 megajoule
- 25 foot-pound = 0.00003389545 megajoule
- 30 foot-pound = 0.00004067454 megajoule
- 50 foot-pound = 0.0000677909 megajoule
- 75 foot-pound = 0.0001016863 megajoule
- 100 foot-pound = 0.0001355818 megajoule
- 200 foot-pound = 0.0002711636 megajoule
- 500 foot-pound = 0.000677909 megajoule
- 1000 foot-pound = 0.001355818 megajoule
Foot-pound to Megajoule conversion chart (both directions)
The chart below converts foot-pound to megajoule and megajoule to foot-pound side by side, so it works whichever way you need. 1 foot-pound = 0.000001355818 megajoule, and 1 megajoule = 737,562.1 foot-pound.
| Foot-pound → Megajoule | Megajoule → Foot-pound |
|---|---|
| 0.25 ft·lbf = 0.0000003389545 MJ | 0.25 MJ = 184,390.5 ft·lbf |
| 0.5 ft·lbf = 0.000000677909 MJ | 0.5 MJ = 368,781.1 ft·lbf |
| 1 ft·lbf = 0.000001355818 MJ | 1 MJ = 737,562.1 ft·lbf |
| 2 ft·lbf = 0.000002711636 MJ | 2 MJ = 1,475,124 ft·lbf |
| 3 ft·lbf = 0.000004067454 MJ | 3 MJ = 2,212,686 ft·lbf |
| 4 ft·lbf = 0.000005423272 MJ | 4 MJ = 2,950,249 ft·lbf |
| 5 ft·lbf = 0.00000677909 MJ | 5 MJ = 3,687,811 ft·lbf |
| 6 ft·lbf = 0.000008134908 MJ | 6 MJ = 4,425,373 ft·lbf |
| 7 ft·lbf = 0.000009490726 MJ | 7 MJ = 5,162,935 ft·lbf |
| 8 ft·lbf = 0.00001084654 MJ | 8 MJ = 5,900,497 ft·lbf |
| 9 ft·lbf = 0.00001220236 MJ | 9 MJ = 6,638,059 ft·lbf |
| 10 ft·lbf = 0.00001355818 MJ | 10 MJ = 7,375,621 ft·lbf |
| 12 ft·lbf = 0.00001626982 MJ | 12 MJ = 8,850,746 ft·lbf |
| 15 ft·lbf = 0.00002033727 MJ | 15 MJ = 11,063,430 ft·lbf |
| 20 ft·lbf = 0.00002711636 MJ | 20 MJ = 14,751,240 ft·lbf |
| 25 ft·lbf = 0.00003389545 MJ | 25 MJ = 18,439,050 ft·lbf |
| 30 ft·lbf = 0.00004067454 MJ | 30 MJ = 22,126,860 ft·lbf |
| 40 ft·lbf = 0.00005423272 MJ | 40 MJ = 29,502,490 ft·lbf |
| 50 ft·lbf = 0.0000677909 MJ | 50 MJ = 36,878,110 ft·lbf |
| 75 ft·lbf = 0.0001016863 MJ | 75 MJ = 55,317,160 ft·lbf |
| 100 ft·lbf = 0.0001355818 MJ | 100 MJ = 73,756,210 ft·lbf |
| 150 ft·lbf = 0.0002033727 MJ | 150 MJ = 110,634,300 ft·lbf |
| 200 ft·lbf = 0.0002711636 MJ | 200 MJ = 147,512,400 ft·lbf |
| 250 ft·lbf = 0.0003389545 MJ | 250 MJ = 184,390,500 ft·lbf |
| 500 ft·lbf = 0.000677909 MJ | 500 MJ = 368,781,100 ft·lbf |
| 1000 ft·lbf = 0.001355818 MJ | 1000 MJ = 737,562,100 ft·lbf |
Foot-pound vs Megajoule: which is bigger?
A megajoule is the larger unit: one megajoule equals 737,562.1 foot-pounds. Put another way, you need 737,562.1 foot-pounds to make a single megajoule.
What is a Foot-pound? History, origin and usage
The foot-pound is a traditional British and American unit of work, defined as the energy transferred when one pound-force acts through a distance of one foot. It predates the metric joule and grew out of practical engineering in the imperial system, where force was measured in pounds-force and distance in feet.
The foot-pound survives in US engineering and especially in firearms ballistics, where the muzzle energy of a bullet is almost always quoted in foot-pounds. Its near-twin, the pound-foot (lbf·ft), is the everyday US unit of torque for engines and fasteners.
One foot-pound is about 1.356 joules — roughly the energy needed to lift a one-pound weight one foot. The foot-pound of energy and the pound-foot of torque carry the same number but describe different quantities, so careful writers add “of energy” or “of torque” to avoid confusion.
What is a Megajoule? History, origin and usage
The megajoule is one million joules (1,000 kilojoules), again built on the joule named after James Prescott Joule. The “mega” prefix makes it suited to substantial energy quantities that would be unwieldy written out in plain joules.
Megajoules are commonly used to express the energy content of fuels and foods in scientific contexts, the muzzle energy of large weapons, and the capacity of capacitor banks and other energy-storage systems. Engineers favour the megajoule when energy reaches the scale of a vehicle’s kinetic energy or a full meal’s content.
A typical car moving at highway speed carries on the order of one megajoule of kinetic energy, which is part of why a crash at speed is so destructive. One kilowatt-hour of electricity equals exactly 3.6 megajoules.
Convert 1 Foot-pound to other units
It can help to see a foot-pound next to the other units it is commonly compared with. One foot-pound (ft·lbf) is equal to:
| 1 Foot-pound equals | Unit |
|---|---|
| 1.355818 J | Joule |
| 1.355818 N·m | Newton-metre |
| 0.001355818 kJ | Kilojoule |
| 0.000001355818 MJ | Megajoule |
| 0.0003766161 Wh | Watt-hour |
| 0.0000003766161 kWh | Kilowatt-hour |
| 0.0000000003766161 MWh | Megawatt-hour |
| 8,462,350,000,000 MeV | Megaelectronvolt |
| 0.3240483 cal | Calorie |
| 0.0003240483 kcal | Kilocalorie |
| 0.001285067 BTU | British Thermal Unit |
Convert 1 Megajoule to other units
One megajoule (MJ) is equal to:
| 1 Megajoule equals | Unit |
|---|---|
| 1,000,000 J | Joule |
| 1,000,000 N·m | Newton-metre |
| 1,000 kJ | Kilojoule |
| 277.7778 Wh | Watt-hour |
| 0.2777778 kWh | Kilowatt-hour |
| 0.0002777778 MWh | Megawatt-hour |
| 737,562.1 ft·lbf | Foot-pound |
| 6,241,509,000,000,000,000 MeV | Megaelectronvolt |
| 239,005.7 cal | Calorie |
| 239.0057 kcal | Kilocalorie |
| 947.8171 BTU | British Thermal Unit |
Tips for converting Foot-pound to Megajoule
- To go from foot-pound to megajoule, multiply by 0.000001355818; to go back, divide by 0.000001355818 (or multiply by 737,562.1).
- For a quick mental estimate, remember that 1 foot-pound ≈ 0.000001355818 megajoule, so 10 foot-pound ≈ 0.00001355818 megajoule.
- The converter above keeps full precision; the tables round for readability, so use the tool for exact figures.
- Both fields update live as you type — change either side to convert in that direction.
How to use this Foot-pound to Megajoule converter
Type a number into the Foot-pound field and the equivalent in Megajoule appears instantly — there is no “convert” button to press and nothing is sent to a server, so it works offline once the page has loaded and is safe for any data. You can also type into the Megajoule field to convert the other way (megajoule to foot-pound). Use the swap control to flip the two units, and copy the result with a single click. Because the calculation runs in your browser with full floating-point precision, the converter is more exact than the rounded figures shown in the reference chart above — use the chart for quick look-ups and the tool for precise work.
Accuracy and method
Every figure on this page — the formula, the worked examples, the conversion chart and the “convert to other units” tables — is computed from a single verified conversion factor (1 ft·lbf = 0.000001355818 MJ), never copied from a hand-typed lookup table that could drift. That factor is derived from each unit’s definition in terms of a common base unit, and an automated check re-verifies all of the site’s factors on every update, so the numbers here stay correct over time. This matters for foot-pound-to-megajoule conversions because a small rounding error in a published table compounds quickly at larger quantities; computing from the exact factor avoids that.
<strong>Torque vs energy:</strong> {torqueNote}
Frequently asked questions
- How many megajoule are in 1 foot-pound?
- 1 foot-pound = 0.000001355818 megajoule (MJ). To convert any number of foot-pound to megajoule, multiply by 0.000001355818.
- How do I convert foot-pound to megajoule?
- Multiply the number of foot-pound by 0.000001355818. For example, 10 foot-pound = 10 × 0.000001355818 = 0.00001355818 megajoule, and 25 foot-pound = 0.00003389545 megajoule.
- How many foot-pound are in 1 megajoule?
- 1 megajoule = 737,562.1 foot-pound. So to convert megajoule back to foot-pound, multiply by 737,562.1.
- What is the formula to convert foot-pound to megajoule?
- megajoule = foot-pound × 0.000001355818. The reverse formula is foot-pound = megajoule × 737,562.1.
- How much is 100 foot-pound in megajoule?
- 100 foot-pound = 0.0001355818 megajoule. (And 1000 foot-pound = 0.001355818 megajoule.)
- Which is bigger, a foot-pound or a megajoule?
- A megajoule is larger: 1 megajoule = 737,562.1 foot-pound.
- Is this foot-pound to megajoule converter accurate?
- Yes — every value is computed from the exact 0.000001355818 MJ per ft·lbf factor (not rounded look-up tables), and the factors are re-verified automatically on every update.
- Can I convert megajoule to foot-pound too?
- Yes. The converter works both ways — enter a value in either field. 1 megajoule = 737,562.1 foot-pound.