What this tool does
Convert torque from foot-pounds (lbf·ft) to inch-pounds (lbf·in), with newton meters and other torque units alongside. Type an amount in pound-force feet, choose the units, and the tool converts it to pound-force inches. It offers 5 torque units and also shows the same amount in the others.
Inputs
- Value: A number.
- From: Choose one: Pound-force foot, Pound-force inch, Ounce-force inch, Newton meter, Kilogram-force meter. Starts as Pound-force foot.
- To: Choose one of the same 5 units as "From". Starts as Pound-force inch.
How to use
- Enter the amount you want to convert.
- Choose the unit to convert from and the unit to convert to.
- Read the result: the converted amount and the same amount in the other units. It appears once every required field has a valid value.
Worked examples
Conversions from pound-force feet to pound-force inches:
- 1 lbf·ft = 12 lbf·in
- 5 lbf·ft = 60 lbf·in
- 10 lbf·ft = 120 lbf·in
- 50 lbf·ft = 600 lbf·in
- 100 lbf·ft = 1,200 lbf·in
Multiply the number of pound-force feet by 12 to get pound-force inches. Both units are exact definitions, so 12 is the exact factor: 1 lbf·ft = 12 lbf·in.
Sources: Pound-force foot: exact by definition. Pound-force inch: exact by definition.
Limitations
- Converts a torque value from one unit to another. It does not work out the torque a bolt, engine or motor needs.
- Foot-pounds of torque are not the same as foot-pounds of energy, even though both are written ft-lb. This page converts torque only.
- Always check the torque in the manufacturer's specification, and note which unit it is written in.
FAQs
- Q: How many inch-pounds are in a foot-pound?
- A: One foot-pound is exactly 12 inch-pounds, because a foot is 12 inches. Multiply foot-pounds by 12 to get inch-pounds.
- Q: Are foot-pounds the same as pound-force feet?
- A: Yes. This page uses the pound-force foot (lbf·ft), the unit that torque specifications call a foot-pound (ft-lb).
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