Kilogram-force to Foot-pound
Compare Kilogram-force and Foot-pound. See why these engineering units measure different physical quantities, plus links to valid conversions.
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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.
Kilogram-force and Foot-pound measure different quantities, so no single result applies.
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Formula
Kilogram-force (kgf) measures force, while Foot-pound (ft-lb) measures energy. These are different physical quantities, so there is no single multiplication factor that converts one into the other.
kgf relates to its own force base unit by a factor of 9.80665. ft-lb relates to its own energy base unit by a factor of 1.35582.
Conversion table
| Kilogram-force (kgf) | 9.80665 × force base unit |
| Foot-pound (ft-lb) | 1.35582 × energy base unit |
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Frequently asked questions
Can Kilogram-force be converted to Foot-pound?
Not directly. Kilogram-force measures force and Foot-pound 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 Kilogram-force used for?
The Kilogram-force (kgf) is a unit of force. Kilogram-force under standard gravity.
What is Foot-pound used for?
The Foot-pound (ft-lb) is a unit of energy. Work from one pound-force over one foot.
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 Kilogram-force and Foot-pound don't, the tool flags them as not directly compatible rather than returning a meaningless number.
What should I convert Kilogram-force to instead?
Use another force unit, such as one of the related Kilogram-force conversions linked below.
What should I convert Foot-pound to instead?
Use another energy unit, such as one of the related Foot-pound conversions linked below.
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About this conversion
This page compares Kilogram-force (kgf) and Foot-pound (ft-lb) within the engineering converter.
Kilogram-force under standard gravity. Work from one pound-force over one foot.
Because Kilogram-force measures force and Foot-pound 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.