Inch-Pound to Joule Converter
Convert Inch-Pound (in·lbf) to Joule (J) instantly. 1 in·lbf = 0.112985 J.
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27 units available
1 in·lbf = 0.112985 J
Formula:
J = in·lbf × 0.112984829With your value: 1 in·lbf = 0.11298483 J
How big is that?
Everyday references on a logarithmic scale, all expressed in inch-pound so you can sanity-check the result.
Other Inch-Pound to Joule conversions
Inch-Pound to Joule Conversion Table
| Inch-Pound (in·lbf) | Joule (J) |
|---|---|
| 0.5 | 0.056492 |
| 1 | 0.112985 |
| 2 | 0.22597 |
| 5 | 0.564924 |
| 10 | 1.129848 |
| 15 | 1.694772 |
| 20 | 2.259697 |
| 25 | 2.824621 |
| 50 | 5.649241 |
| 100 | 11.298483 |
| 250 | 28.246207 |
| 500 | 56.492415 |
| 1000 | 112.984829 |
Joule to Inch-Pound Conversion Table
| Joule (J) | Inch-Pound (in·lbf) |
|---|---|
| 0.5 | 4.425373 |
| 1 | 8.850746 |
| 2 | 17.701492 |
| 5 | 44.253729 |
| 10 | 88.507458 |
| 15 | 132.761187 |
| 20 | 177.014916 |
| 25 | 221.268645 |
| 50 | 442.53729 |
| 100 | 885.074579 |
| 250 | 2,212.686448 |
| 500 | 4,425.372896 |
| 1000 | 8,850.745791 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Inch-Pound (in·lbf)
Energy
Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Joule (J)
Energy
Derived from the joule (1 J = 1 kg·m²/s²). Thermochemical and IT calories, BTU and kWh are exact defined multiples.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Inch-Pound to Joule
To convert from Inch-Pound (in·lbf) to Joule (J), multiply the value by 0.112984829.
Formula: J = in·lbf × 0.112984829
Reverse: in·lbf = J × 8.8507457913
Step-by-Step Example
- Start with your value in Inch-Pound. For example: 5 in·lbf
- Multiply by the conversion factor: 5 x 0.112984829
- The result is: 0.564924 J
About Inch-Pound
The inch-pound (in·lbf) is a unit of energy and work. One inch-pound equals 0.112984829 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: energy calculations, engineering and science, education.
About Joule
The joule is the SI unit of energy. One joule equals the work done when a force of one newton moves an object one meter.
Common uses: physics, electrical engineering, chemistry.
Frequently Asked Questions
How many Joule are in 1 Inch-Pound?
There are exactly 0.112984829 Joule in 1 Inch-Pound. This means the conversion factor from Inch-Pound to Joule is 0.112984829.
What is the formula to convert Inch-Pound to Joule?
The formula to convert Inch-Pound to Joule is: J = in·lbf × 0.112984829. For example, to convert 10 Inch-Pound to Joule, you would multiply 10 by 0.112984829.
What is a Inch-Pound?
The inch-pound (in·lbf) is a unit of energy and work. One inch-pound equals 0.112984829 joules. UnitConvertLab converts it against every other energy unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What is a Joule?
The joule is the SI unit of energy. One joule equals the work done when a force of one newton moves an object one meter.
What are the common uses of Inch-Pound?
The Inch-Pound is commonly used in energy calculations, engineering and science, education.
Related Energy Conversions
Cite this page
UnitConvertLab. (2026). Inch-Pound to Joule converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/inch_pound-to-joule