Conversion tool
Convert foot-pounds to inch-pounds instantly
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Disclaimer: Use calculations at your own risk. For critical applications, verify results against your governing standards/specifications.
How it works
We use in-lb = ft-lb x 12.
Exact relationship: 1 ft-lb = 12 in-lb.
Example: 10 ft-lb = 120.000 in-lb.
Notes: Results are rounded in the default view.
Examples
- 10 ft-lb = 120.000 in-lb
- 50 ft-lb = 600.000 in-lb
- 250 ft-lb = 3000.000 in-lb
FAQ
What physical quantity do foot-pounds and inch-pounds express?
Foot-pounds express torque in customary engineering contexts and are widely used in mechanical assembly and vehicle service work. Inch-pounds express smaller torque values where foot-pounds would be too coarse for practical fastening and adjustment work.
What is the difference between foot-pounds and inch-pounds?
Foot-pounds and inch-pounds both express torque, but they come from different engineering conventions and are used in different tool, vehicle, and machine ecosystems.
What is the history of the foot-pound?
Foot-pounds grew from customary force-and-distance engineering practice and remain common in U.S. torque specifications.
What is the history of the inch-pound?
Inch-pounds come from the same customary torque tradition as foot-pounds and remain useful for smaller fasteners and precision assembly.
Were the foot-pound and inch-pound discovered by a specific person?
Foot-pounds emerged from engineering convention and standardization rather than discovery by one person. Inch-pounds are a conventional engineering unit, not a discovery attributed to one person.
Where are foot-pounds and inch-pounds used in science and engineering?
Foot-pounds are common in automotive service manuals, fastener charts, wrench settings, and U.S.-oriented machine maintenance. Inch-pounds are used for electronics, small fasteners, covers, clamps, instrumentation, and precision assembly settings.
Why do torque units matter in calculations?
Torque units affect wrench settings, fastener integrity, shaft loading, machine setup, and maintenance outcomes. Using the wrong torque unit can cause direct hardware damage or safety risk.
Can I trust this for critical calculations?
Use this for convenience and verify against your governing standard, service manual, or controlled engineering document for critical work. Torque values often tie directly to safety and reliability.
References
- Exact constant used: 1 ft-lb = 12 in-lb.
- Torque conversions are derived from consistent rotational moment relationships anchored to the newton-meter.