Torque Conversions
Convert torque units — N·m, ft·lb, in·lb, kg·m. Free calculators for automotive specs, bolts, and machinery.
5 units · 6 conversions
Torque measures rotational force — critical for tightening bolts, comparing engine output, and sizing motors. Newton-meters (N·m) is the SI unit; foot-pounds (ft·lb) and inch-pounds (in·lb) dominate US automotive and mechanical specs.
Do not confuse torque with work or energy even though units look similar. Torque has no distance-traveled component in its definition. Our converters apply precise factors between common torque units.
Popular torque conversions
Real-world example
Your torque wrench is marked in ft·lb but the service manual specifies 80 N·m for wheel lugs. Converting 80 N·m gives about 59 ft·lb — the setting to use without undertightening.
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Torque units explained
- Newton Meters (N⋅m) · base unit
- Also: newton meters, nm
- Foot-pounds (ft⋅lbf)
- Also: foot pounds, ft-lb, ft lbf
- Inch-pounds (in⋅lbf)
- Also: inch pounds, in-lb, in lbf
- Kilogram Meters (kg⋅m)
- Also: kilogram meters, kgf⋅m
- Dyne Centimeters (dyn⋅cm)
- Also: dyne centimeters
Frequently asked questions
- How do I convert N·m to ft·lb?
- Multiply N·m by 0.737562 to get ft·lb. Example: 100 N·m ≈ 73.8 ft·lb.
- What is the difference between ft·lb and lb·ft?
- For torque, ft·lb (or lbf·ft) is standard notation. lb·ft is sometimes used colloquially for the same quantity in US automotive contexts.