Microjoule is 0.000001 joule units.
Microjoules to Foot-pounds Converter — uJ to ft-lb
Convert Microjoule (uJ) to Foot-pound (ft-lb) using the exact conversion factor (1 microjoule = 7.375621e-7 foot-pound). See the formula, worked examples, and conversion table.
Microjoules 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 1e-6 / 1.355817948.
Energy units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Microjoules to Foot-pounds
Microjoule 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: Microjoule is 0.000001 joule units, and work from one pound-force over one foot.
Formula
foot-pounds = microjoules × 7.375621e-7
This factor comes from each unit's defined relationship to the category's base unit: 1 microjoule equals 0.000001 base units, and 1 foot-pound equals 1.35581794833 base units, so dividing one by the other gives the direct microjoule-to-foot-pound factor of 7.375621e-7.
Simple example
1 uJ × 7.375621e-7 = 7.375621e-7 ft-lb
1 microjoule = 7.375621e-7 foot-pounds.
Real-world example
100 uJ × 7.375621e-7 = 0.0000737562 ft-lb
100 microjoules = 0.0000737562 foot-pounds.
Conversion table
| Microjoule (uJ) | Foot-pound (ft-lb) |
|---|---|
| 1 uJ | 7.375621e-7 ft-lb |
| 10 uJ | 0.0000073756 ft-lb |
| 50 uJ | 0.0000368781 ft-lb |
| 100 uJ | 0.0000737562 ft-lb |
| 500 uJ | 0.0003687811 ft-lb |
| 1,000 uJ | 0.0007375621 ft-lb |
Reverse conversion: Foot-pound to Microjoule
7.375621e-7 ft-lb × 1355817.948 = 0.9999999332 uJ
7.375621e-7 foot-pounds = 0.9999999332 microjoules.
microjoules = foot-pounds × 1355817.94833
For a page dedicated to this direction, see Foot-pound to Microjoule.
Understanding the Microjoule (uJ)
Microjoule is 0.000001 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 microjoule?
1 microjoule equals 7.375621e-7 foot-pounds, using the exact defined conversion factor rather than an estimate.
How do I convert microjoule to foot-pound?
Multiply the microjoule value by 7.375621e-7. The converter above does this instantly to whatever precision you set.
How do I convert foot-pound back to microjoule?
Use the reverse factor: 1 foot-pound equals 1,355,817.948 microjoules. You can also use the swap control in the converter above to flip the direction instantly.
What is a microjoule?
Microjoule (uJ) is a unit of engineering.
What is a foot-pound?
Foot-pound (ft-lb) is a unit of engineering.
Is the microjoule to foot-pound conversion exact?
Yes. Both microjoule and foot-pound are defined by fixed standards rather than physical artifacts, so the factor of 7.375621e-7 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.