Torque Unit Converter

Torque represents the rotational force applied to an object around an axis. In mechanical engineering and automotive maintenance, specific torque values are critical for fastener integrity. Manufacturers define these specifications to ensure bolts provide adequate clamping force without exceeding their yield strength. Incorrect torque application results in two primary failure modes: stripped threads or snapped bolts from over-tightening, and mechanical separation or vibration loosening from under-tightening.

Precision is paramount when working with engine components like cylinder heads or connecting rods. A deviation of just a few N⋅m can compromise a gasket seal or lead to catastrophic engine failure. This converter utilizes standard gravitational constants and precise conversion factors to translate values between Metric, Imperial, and CGS systems, ensuring compliance with service manuals regardless of the wrench scale available.

The conversion of torque relies on the relationship between force and distance in different unit systems. The base definition of torque τ is the cross product of the lever arm vector r and the force vector F.

To convert from Newton-meters (N⋅m) to Pound-force feet (lb_f⋅ft), we use the following constant derived from the definition of the pound and the foot in SI units:

Conversely, converting Kilogram-force meters (kg_f⋅m) to Newton-meters involves the standard gravity constant g: