Pound-foot to Kilojoule
Compare Pound-foot and Kilojoule. 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.
Pound-foot and Kilojoule measure different quantities, so no single result applies.
Reserved above the conversion cards and below the converter.
Formula
Pound-foot (lb ft) measures torque (rotational force), while Kilojoule (kJ) measures energy. These are different physical quantities, so there is no single multiplication factor that converts one into the other.
lb ft relates to its own torque (rotational force) base unit by a factor of 1.35582. kJ relates to its own energy base unit by a factor of 1000.
Conversion table
| Pound-foot (lb ft) | 1.35582 × torque (rotational force) base unit |
| Kilojoule (kJ) | 1000 × energy base unit |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
Can Pound-foot be converted to Kilojoule?
Not directly. Pound-foot measures torque (rotational force) and Kilojoule measures energy. Converting between different physical quantities needs an extra physical relationship (such as area, distance, or time), not just a unit ratio.
What is Pound-foot used for?
The Pound-foot (lb ft) is a unit of torque (rotational force). Torque from one pound-force at one foot.
What is Kilojoule used for?
The Kilojoule (kJ) is a unit of energy. Kilojoule is 1000 joule units.
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 Pound-foot and Kilojoule don't, the tool flags them as not directly compatible rather than returning a meaningless number.
What should I convert Pound-foot to instead?
Use another torque (rotational force) unit, such as one of the related Pound-foot conversions linked below.
What should I convert Kilojoule to instead?
Use another energy unit, such as one of the related Kilojoule conversions linked below.
Reserved between the FAQ and the article so the page stays balanced.
About this conversion
This page compares Pound-foot (lb ft) and Kilojoule (kJ) within the engineering converter.
Torque from one pound-force at one foot. Kilojoule is 1000 joule units.
Because Pound-foot measures torque (rotational force) and Kilojoule measures energy, 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.