How torque converter works
Torque — twisting force — shows up on every fastener spec, motor plate and torque wrench, in a different unit depending on where the equipment was made: SI drawings use newton-meters, US manuals use pound-feet and pound-inches, and older or metric-mechanical documents use kilogram-force meters. This converter translates any of the nine units into any other.
Every conversion is anchored to the newton-meter using exact definitions: standard gravity is 9.80665 m/s² so one kilogram-force meter is exactly 9.80665 N·m, and the international foot is exactly 0.3048 m with the pound-force exactly 4.4482216152605 N, making one pound-foot exactly 1.3558179483314 N·m. The tool normalizes your value through newton-meters, so both directions of every pair agree.
Results are reported to 12 significant digits, with the intermediate value in N·m shown for every conversion so you can check magnitudes at a glance — a 100 N·m wheel-nut spec is 73.76 lb·ft, a 25 N·m setting is 221.3 lb·in, and 10 kgf·m is 98.07 N·m. All math runs in your browser.