Torque Converter
Convert between newton-meters (N·m), kgf·m, lb-ft, and lb-in, and compare how much force each represents
Convert torque — the twisting force applied around an axis — between the SI unit (N·m), the gravitational unit still common in Korean and Japanese industry (kgf·m), and the imperial units used in the US (lb-ft and lb-in).
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How to use
- Enter the torque figure you want to convert into any one of the input fields.
- The equivalents in N·m, kgf·m, lb-ft, and lb-in are all calculated live as you type.
- Check the reference cards for real-world figures like car engine torque and impact wrench specs.
FAQ
- How do N·m and kgf·m relate to each other?
- One kgf·m is the torque produced when the force of 1 kg under standard gravity (9.80665 m/s²) acts one meter from the axis, so it converts to about 9.80665 N·m. Going the other way, 1 N·m is roughly 0.10197 kgf·m.
- What's the difference between lb·ft and lb·in?
- Both use the same pound-force unit, but the lever-arm length differs: lb·ft is measured over a 1-foot (12-inch) arm, while lb·in uses a 1-inch arm, so 1 lb·ft equals 12 lb·in. Small-force specs like electronics screws are usually given in lb·in, while larger jobs like automotive wheel nuts are typically specified in lb·ft.
- What's the difference between lb·ft and lb·in?
- Both use the same pound-force unit, but the lever-arm length differs: lb·ft is measured over a 1-foot (12-inch) arm, while lb·in uses a 1-inch arm, so 1 lb·ft equals 12 lb·in. Small-force specs like electronics screws are usually given in lb·in, while larger jobs like automotive wheel nuts are typically specified in lb·ft.