Joule to Pound-inch
Compare Joule and Pound-inch. See why these engineering units measure different physical quantities, plus links to valid conversions.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
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.
Use the converter to see the formula.
Joule and Pound-inch measure different quantities, so no single result applies.
Reserved above the conversion cards and below the converter.
Formula
Joule (J) measures energy, while Pound-inch (lb in) measures torque (rotational force). These are different physical quantities, so there is no single multiplication factor that converts one into the other.
J relates to its own energy base unit by a factor of 1. lb in relates to its own torque (rotational force) base unit by a factor of 0.112985.
Conversion table
| Joule (J) | 1 × energy base unit |
| Pound-inch (lb in) | 0.112985 × torque (rotational force) base unit |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
Can Joule be converted to Pound-inch?
Not directly. Joule measures energy and Pound-inch measures torque (rotational force). Converting between different physical quantities needs an extra physical relationship (such as area, distance, or time), not just a unit ratio.
What is Joule used for?
The Joule (J) is a unit of energy. The joule is the SI derived unit of energy.
What is Pound-inch used for?
The Pound-inch (lb in) is a unit of torque (rotational force). Torque from one pound-force at one inch.
Why does the converter show an incompatible units message?
The Universal Converter only calculates a numeric result when both units share the same physical dimension. Since Joule and Pound-inch don't, the tool flags them as not directly compatible rather than returning a meaningless number.
What should I convert Joule to instead?
Use another energy unit, such as one of the related Joule conversions linked below.
What should I convert Pound-inch to instead?
Use another torque (rotational force) unit, such as one of the related Pound-inch conversions linked below.
Reserved between the FAQ and the article so the page stays balanced.
About this conversion
This page compares Joule (J) and Pound-inch (lb in) within the engineering converter.
The joule is the SI derived unit of energy. Torque from one pound-force at one inch.
Because Joule measures energy and Pound-inch measures torque (rotational force), the two units are not directly convertible: there is no fixed ratio that turns one into the other without additional information.
The calculator above will report that these units are not compatible. For a working result, choose two units from the same measurement family — see the related conversions below.