Direct conversion
Result
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Engineering snapshot
—N·m
—lbf·ft
—lbf·in
—kgf·m
Torque and energy can both reduce dimensionally to force × distance, but they are different physical quantities. This tool treats torque as a rotational moment.
All equivalents
Torque from force and lever arm
Torque
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τ = r F sin θ
Rotational work from a constant torque
—work (J)
—angle (rad)
—perp force N
—arm m
Work = τ × angular displacement in radians when torque is constant through the rotation.
Power · torque · RPM solver
Leave exactly one numeric field blank. Relationship: P = τ × 2π × RPM / 60.
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Why RPM is required
Power and torque are not directly interchangeable without rotational speed. The same torque can represent very different power at different RPM.
—rad/s
—rev/s
—hp
—kW
Definitions
| Unit | N·m per unit |
|---|
Usage notes
1 lbf·ft = 1.3558179483314 N·m.
1 lbf·in = 0.112984829027617 N·m.
1 kgf·m = 9.80665 N·m.
1 ozf·in = 0.00706155181423 N·m.
For safety-critical tightening, always follow the manufacturer's specified procedure, wrench range, lubrication condition, adapter geometry and any torque-plus-angle requirement. A unit conversion alone cannot validate a fastener procedure.