Millijoule is 0.001 joule units.
Millijoules to Foot-pounds Converter — mJ to ft-lb
Convert Millijoule (mJ) to Foot-pound (ft-lb) using the exact conversion factor (1 millijoule = 0.0007375621 foot-pound). See the formula, worked examples, and conversion table.
Millijoules to Foot-pounds converter
Converter
Engineering Converter
Convert common stress, force, torque, power, and energy units used in engineering.
Context values
Some unit families need one extra value for a physically accurate result.
Work from one pound-force over one foot.
Result = input x 0.001 / 1.355817948.
Energy units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Millijoules to Foot-pounds
Millijoule and Foot-pound both measure a quantity used in structural or mechanical engineering — commonly stress, pressure, force, torque, power, or energy — where converting between the unit conventions used in different regions, industries, or equipment specifications is a routine part of design work. Specifically: Millijoule is 0.001 joule units, and work from one pound-force over one foot.
Formula
foot-pounds = millijoules × 0.000737562149277
This factor comes from each unit's defined relationship to the category's base unit: 1 millijoule equals 0.001 base units, and 1 foot-pound equals 1.35581794833 base units, so dividing one by the other gives the direct millijoule-to-foot-pound factor of 0.000737562149277.
Simple example
1 mJ × 0.0007375621493 = 0.0007375621 ft-lb
1 millijoule = 0.0007375621 foot-pounds.
Real-world example
100 mJ × 0.0007375621493 = 0.0737562149 ft-lb
100 millijoules = 0.0737562149 foot-pounds.
Conversion table
| Millijoule (mJ) | Foot-pound (ft-lb) |
|---|---|
| 1 mJ | 0.0007375621 ft-lb |
| 10 mJ | 0.0073756215 ft-lb |
| 50 mJ | 0.0368781075 ft-lb |
| 100 mJ | 0.0737562149 ft-lb |
| 500 mJ | 0.3687810746 ft-lb |
| 1,000 mJ | 0.7375621493 ft-lb |
Reverse conversion: Foot-pound to Millijoule
0.0007375621 ft-lb × 1355.817948 = 0.9999999332 mJ
0.0007375621 foot-pounds = 0.9999999332 millijoules.
millijoules = foot-pounds × 1355.81794833
For a page dedicated to this direction, see Foot-pound to Millijoule.
Understanding the Millijoule (mJ)
Millijoule is 0.001 joule units.
Understanding the Foot-pound (ft-lb)
Work from one pound-force over one foot.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many foot-pounds are in 1 millijoule?
1 millijoule equals 0.0007375621 foot-pounds, using the exact defined conversion factor rather than an estimate.
How do I convert millijoule to foot-pound?
Multiply the millijoule value by 0.0007375621493. The converter above does this instantly to whatever precision you set.
How do I convert foot-pound back to millijoule?
Use the reverse factor: 1 foot-pound equals 1,355.817948 millijoules. You can also use the swap control in the converter above to flip the direction instantly.
What is a millijoule?
Millijoule (mJ) is a unit of engineering.
What is a foot-pound?
Foot-pound (ft-lb) is a unit of engineering.
Is the millijoule to foot-pound conversion exact?
Yes. Both millijoule and foot-pound are defined by fixed standards rather than physical artifacts, so the factor of 0.0007375621493 used above is exact to as many digits as you choose to display.
Why do engineering unit conventions vary so much by region and industry?
Pressure, force, and stress can be expressed in metric (pascal, newton), US customary (psi, pound-force), or older and industry-specific units (atmosphere, torr, kip) depending on the country, industry, and even the equipment manufacturer, which is why engineers routinely need to convert between them when working across specs from different sources.