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Inch-Pounds to Foot-Pounds Converter

Convert inch-pounds to foot-pounds and back. Both are customary torque units; there are exactly 12 inch-pounds in a foot-pound.

Inch-Pounds ⇄ Foot-Pounds
in-lb
=
ft-lb
Result12 in-lb = 1 ft-lb
Quick answer
A foot-pound is 12 inch-pounds, because a foot is twelve inches, so divide inch-pounds by 12 to get foot-pounds. That makes 120 in-lb equal to 10 ft-lb. Both measure the same twisting effort; which one a spec uses just depends on the size of the fastener.

Conversion table

Inch-pounds (in-lb)Foot-pounds (ft-lb)
6 in-lb0.5
12 in-lb1
24 in-lb2
60 in-lb5
120 in-lb10
240 in-lb20

How to convert in-lb to ft-lb

ft-lb = in-lb ÷ 12reverse: in-lb = ft-lb × 12
in-lb
inch-pounds you enter
ft-lb
the result in foot-pounds
12
inch-pounds in one foot-pound

This one is exact and unit-only, no metric conversion involved, since both are customary torque units.

Frequently asked questions

How many foot-pounds is 120 in-lb?

120 inch-pounds is 10 foot-pounds.

How many inch-pounds is 5 ft-lb?

5 foot-pounds is 60 inch-pounds.

Why is a foot-pound 12 inch-pounds?

Because a foot is 12 inches, and torque is force times distance, so the distance scales by 12.

Which unit do torque wrenches use?

Larger click wrenches read in foot-pounds; small precision drivers read in inch-pounds.

Quick facts
1 foot-pound
12 in-lb
12 in-lb
1 ft-lb
60 in-lb
5 ft-lb
Measures
Torque