How do you convert megajoules to foot-pounds?

To convert megajoules (MJ) to foot-pounds (ft·lbf), multiply the energy in megajoules by 737,562.14927726 (foot-pounds = megajoules × 737,562.14927726).

What is 5 megajoules in foot-pounds?

5 megajoules (5 MJ) is equal to 3,687,810.74638632 foot-pounds (3,687,810.74638632 ft·lbf).

Which is larger, 1 megajoule (MJ) or 1 foot-pound (ft·lbf) (ft·lbf)?

One megajoule (MJ) is larger than one foot-pound (ft·lbf) (ft·lbf). Specifically, 1 MJ contains 737,562.14927726 ft·lbf, whereas 1 ft·lbf is 0.00000135 MJ.

How do I convert back from foot-pounds (ft·lbf) to megajoules (MJ)?

To reverse the calculation from ft·lbf to MJ, multiply your foot-pound (ft·lbf) value by the inverse factor 0.00000135 (or divide by 737,562.14927726). You can also click the Swap button in the tool above to flip directions in one click.

How many decimal places should I round MJ to ft·lbf results to?

For everyday comparisons and quick estimates, rounding to 2 decimal places is usually sufficient (for example, 5 MJ ≈ 3,687,810.75 ft·lbf). For engineering, laboratory, or machining specifications, select 4 or 6 decimals—or Scientific (10ⁿ) mode—in the calculator toolbar above.

Megajoules to Foot-pounds Converter

Enter the energy in megajoules below to convert it to foot-pounds.

Foot-pounds to Megajoules (ft·lbf → MJ)

Convert Megajoules to Foot-pounds

Enter a value in megajoules (MJ) to convert to foot-pounds (ft·lbf).

Value (MJ)

From

Result

•

3,687,810.746386328foot-pounds

5 MJ = 3,687,810.746386328 ft·lbf

Result updates automatically

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Suggested Conversions

Reference:NIST CODATA (CODATA Energy & Thermodynamic Constants)

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Megajoule to Foot-pound Conversion Table

Table showing various megajoule measurements converted to foot-pounds. Click any preset value or arrow to load it into the converter.

Megajoules (MJ)	Foot-pounds (ft·lbf)
0.0000001 MJ	0.0737562 ft·lbf
0.0000002 MJ	0.1475124 ft·lbf
0.0000003 MJ	0.2212686 ft·lbf
0.0000004 MJ	0.2950249 ft·lbf
0.0000005 MJ	0.3687811 ft·lbf
0.0000006 MJ	0.4425373 ft·lbf
0.0000007 MJ	0.5162935 ft·lbf
0.0000008 MJ	0.5900497 ft·lbf
0.0000009 MJ	0.6638059 ft·lbf
0.00000001 MJ	0.0073756 ft·lbf

How to Convert Megajoules to Foot-pounds

To convert megajoules to foot-pounds, multiply the energy by the following conversion ratio: 737,562.1492773 foot-pounds/megajoule.

Since one megajoule is equal to 737,562.1492773 foot-pounds, you can use this simple formula to convert:

foot-pounds = megajoules × 737,562.1492773

The energy in foot-pounds is equal to the energy in megajoules multiplied by 737,562.1492773.

For example, here's how to convert 5 megajoules to foot-pounds using the formula above.

foot-pounds = (5 MJ × 737,562.1492773) = 3,687,810.7463863 ft·lbf

How Many Foot-pounds Are in a Megajoule?

There are 737,562.1492773 foot-pounds in a megajoule, which is why we use this value in the formula above.

1 MJ = 737,562.1492773 ft·lbf|1 ft·lbf = 0.000001356 MJ

Our megajoule to foot-pound calculator automatically converts your energy measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.

Megajoules and foot-pounds are both units used to measure energy. Keep reading to learn more about each unit.

What Is a Megajoule?

A megajoule is a unit of energy equal to 1,000,000 joules (J), the base unit for energy. Equal to 1,000,000 Joules. [1]

The megajoule is classified as an International System of Units (SI) unit of energy. Megajoules can be abbreviated as MJ; for example, 1 megajoule can be written as 1 MJ.

In the metric system, "mega" is the standard SI prefix for millions, or 10⁶. This makes the megajoule (MJ) a convenient decimal multiple of the joule (J).

In practice, megajoules (MJ) are widely used across large-scale industrial, bulk, and macro-level energy specifications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.

Learn more about megajoules in our Energy Converter.

What Is a Foot-pound?

A foot-pound is a unit of energy equal to 1.3558179 joules (J), the base unit for energy. Mechanical work unit equal to 1.355818 Joules. [2]

The foot-pound is classified as a US customary and imperial unit of energy. Foot-pounds can be abbreviated as ft·lbf; for example, 1 foot-pound can be written as 1 ft·lbf.

When working with foot-pounds (ft·lbf) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.

In practice, foot-pounds (ft·lbf) are widely used across standard energy applications within US customary and imperial workflows, engineering documentation, and technical data sheets.

Learn more about foot-pounds in our Energy Converter.

When converting energy between megajoules (MJ) and foot-pounds (ft·lbf), keep full floating-point precision (1 MJ = 737,562.1492773 ft·lbf; 1 ft·lbf = 0.000001356 MJ) during intermediate calculations and round only the final foot-pound figure to match your instrument tolerance.

More Megajoule & Foot-pound Conversions

Need to calculate in the opposite direction? Use our foot-pounds to megajoules calculator to switch your starting unit immediately. You can also explore related tools such as converting foot-pounds to megajoules, converting joules to foot-pounds, or converting joules to calories.

Convert from Megajoules

Convert to Foot-pounds

Frequently Asked Questions

There are 737,562.14927726 foot-pounds (ft·lbf) in 1 megajoule (MJ). Conversely, 1 foot-pound (ft·lbf) is equal to 0.00000135 megajoules (MJ).

Energy Converter

Quick Info

Direct Factor: 1 megajoule (MJ) equals 737,562.14927726 foot-pounds (ft·lbf).
Inverse Factor: 1 foot-pound (ft·lbf) (ft·lbf) equals 0.00000135 megajoules (MJ).
Formula: foot-pounds = megajoules × 737,562.14927726.
Verified Precision: Anchored to official NIST SP 811 and ISO/IEC 80000 standards.

Units Comparison

Megajoule (MJ)

Equal to 1,000,000 Joules.

Foot-pound (ft·lbf) (ft·lbf)

Mechanical work unit equal to 1.355818 Joules.

Joule (J)

Coherent SI unit of energy and work (1 W·s = 1 N·m).

References

[1]NIST CODATA · CODATA Energy & Thermodynamic Constants
Source
[2]NIST SP 811 · NIST SP 811 App. B.9 (Energy, Work & Heat)
Source
[3]BIPM · Derived SI Unit: Joule (J)
Source

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References

NIST · BIPM · ISO

[1]
NIST CODATA (CODATA Energy & Thermodynamic Constants)·Energy Metrology Standard — Megajoules (MJ) to Foot-pounds (ft·lbf)
NIST CODATA Standard
[2]
NIST SP 811 (NIST SP 811 App. B.9 (Energy, Work & Heat))·Unit Specifications: Megajoule (MJ) & Foot-pound (ft·lbf) (ft·lbf)
NIST SP 811 Specification
[3]
BIPM (Derived SI Unit: Joule (J))·Conversion Factors & Mathematical Basis (MJ to ft·lbf)
BIPM Reference

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