Inch-Pounds to Foot-Pounds Converter: In-lb to Ft-lb

Inch-Pounds To Foot-Pounds Converter

Inch-Pounds to Foot-Pounds Converter

Convert torque/work: inch-pounds to foot-pounds

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Both inch-pounds (in-lb) and foot-pounds (ft-lb) are US customary units of torque, work and energy. Since 1 foot = 12 inches, 1 ft-lb = 12 in-lb.

Enter a value in either field below and the other updates automatically.

Inch-Pounds (in-lb)

Foot-Pounds (ft-lb)

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Converted Value

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Inch-Pounds

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Foot-Pounds

Calculation

Torque and work specs sometimes mix inch-pounds and foot-pounds within the same US customary system, this converter switches between the two instantly.

How to use this inch-pounds to foot-pounds converter

Enter a value in the Inch-Pounds (in-lb) field to see the equivalent in foot-pounds.
Or enter a value in the Foot-Pounds (ft-lb) field to see the equivalent in inch-pounds, either field updates the other automatically.

What this converter does

Both inch-pounds (in-lb) and foot-pounds (ft-lb) are US customary units of torque, work, and energy, they differ purely in the length unit used (inches vs feet). Since 1 foot equals 12 inches, the conversion between them is a simple, exact factor of 12.

1 ft-lb = 12 in-lb, exact conversion

Why both units exist within the same system

Inch-pounds give finer resolution for smaller torque specs (small fasteners, precision assembly), while foot-pounds are the conventional unit for larger torque specs (lug nuts, engine components). Having both in common use within the same measurement system means converting between them is a frequent practical need, particularly when a job involves fasteners of very different sizes.

Frequently asked questions

How many inch-pounds are in a foot-pound?

Exactly 12 inch-pounds make up 1 foot-pound, since 1 foot equals 12 inches and both units are part of the same US customary system.

Why use inch-pounds instead of just foot-pounds for everything?

Inch-pounds give finer resolution for low-torque specifications like small fasteners, where a foot-pound unit would be too coarse to specify accurately.