Foot-pound to Megajoule Converter

One Foot-pound equals 0.000001355817948 Megajoule (1 ft-lb = 0.000001355817948 MJ). Multiply a Foot-pound value by 0.000001355817948 to get the equivalent in Megajoule. Use the calculator above for instant results, or follow the formula, worked examples, and reference table below.

Formula

MJ = ft-lb × 0.000001355817948

Multiply the Foot-pound value by 0.000001355817948 to get the equivalent value in Megajoule.

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

Common conversion values from Foot-pound to Megajoule
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.

  1. Write down the value in Foot-pound (ft-lb) that you want to convert.
  2. Multiply that value by 0.000001355817948.
  3. For example, 10 Foot-pound × 0.000001355817948 = 0.00001355817948 Megajoule.
  4. Label the result as Megajoule (MJ).

Relative Size Comparison

1 Foot-pound
1 Megajoule737562.1493Foot-pounds
1MJ

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 Megajoule (1 ft-lb = 0.000001355817948 MJ). Foot-pound to Megajoule conversion comes up most often in US mechanical engineering and in firearm muzzle energy, typically when figures need restating for 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

15 Foot-pound equals 0.00002033726922 Megajoule.

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 Megajoule.

What is the formula for Foot-pound to Megajoule?

The formula is MJ = ft-lb × 0.000001355817948.

How many Megajoule are in 1 Foot-pound?

1 Foot-pound equals 0.000001355817948 Megajoule.

Can I convert Megajoule back to Foot-pound?

Yes. 1 Megajoule equals 737562.1493 Foot-pound, 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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