Foot-pounds to Megajoules Converter
One Foot-pound equals 0.000001355817948 Megajoules (1 ft-lb = 0.000001355817948 MJ). Multiply a Foot-pound value by 0.000001355817948 to get the equivalent in Megajoules. Enter your value in the calculator above. The formula and examples below show how to calculate it by hand.
Formula
MJ = ft-lb × 0.000001355817948
Multiply the Foot-pound value by 0.000001355817948 to get the equivalent value in Megajoules.
Example Conversions
1 Foot-pound (ft-lb)
0.000001355817948 Megajoule (MJ)
5 Foot-pound (ft-lb)
0.000006779089742 Megajoule (MJ)
10 Foot-pound (ft-lb)
0.00001355817948 Megajoule (MJ)
25 Foot-pound (ft-lb)
0.00003389544871 Megajoule (MJ)
100 Foot-pound (ft-lb)
0.0001355817948 Megajoule (MJ)
Conversion Table
| Foot-pound (ft-lb) | Megajoule (MJ) |
|---|---|
| 0.1 | 1.355818e-7 |
| 0.5 | 6.779090e-7 |
| 1 | 0.000001355817948 |
| 2 | 0.000002711635897 |
| 5 | 0.000006779089742 |
| 10 | 0.00001355817948 |
| 25 | 0.00003389544871 |
| 50 | 0.00006779089742 |
| 100 | 0.0001355817948 |
| 250 | 0.0003389544871 |
| 500 | 0.0006779089741 |
| 1000 | 0.001355817948 |
How to Convert Manually
Use these steps to convert Foot-pound values to Megajoule without the calculator.
- Write down the value in Foot-pound (ft-lb) that you want to convert.
- Multiply that value by 0.000001355817948.
- For example, 10 Foot-pounds × 0.000001355817948 = 0.00001355817948 Megajoules.
- Label the result as Megajoule (MJ).
Relative Size Comparison
This chart shows the visual difference in size between exactly one Foot-pound and one Megajoule.
About Foot-pound and Megajoule
The foot-pound is about 1.3558 joules, the work of one pound-force through one foot. US mechanical engineering and firearm muzzle energy use foot-pounds. The megajoule is one million joules. Fuel energy density, gas billing in some countries, and crash test energies are quoted in megajoules. One Foot-pound equals 0.000001355817948 Megajoules (1 ft-lb = 0.000001355817948 MJ). Foot-pound is used in US mechanical engineering and in firearm muzzle energy. Megajoule is used in fuel energy density figures.
Precision and Rounding:Energy factors mix exact definitions (1 kWh = 3,600,000 J; 1 cal = 4.184 J thermochemical) with measured conventions (1 BTU ≈ 1,055.056 J). Nutrition and utility bills round to whole units; engineering heat calculations should keep the full factor until the final step.
Conversion factors per NIST Special Publication 811 and the BIPM SI Brochure (9th edition) (reference).
Worked Example
15Foot-pounds equals0.00002033726922Megajoules.
15 ft-lb × 0.000001355817948 = 0.00002033726922 MJ
FAQ
How do I convert Foot-pound to Megajoule?
Multiply the Foot-pound value by 0.000001355817948 to get the equivalent value in Megajoules.
What is the formula for Foot-pound to Megajoule?
The formula is MJ = ft-lb × 0.000001355817948.
How many Megajoules are in 1 Foot-pound?
1 Foot-pound equals 0.000001355817948 Megajoules.
Can I convert Megajoule back to Foot-pound?
Yes. 1 Megajoule equals 737562.1493 Foot-pounds, and the related converter can reverse the calculation.
What are common names for Foot-pound and Megajoule?
Foot-pound is shown as ft-lb and may also be searched as foot-pound, foot pound, ft·lb. Megajoule is shown as MJ and may also be searched as megajoule, megajoules.
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