Torque Calculator for CNC Axes

Calculate the required motor torque for a single axis — depending on drive type, moving mass, feed rate and acceleration. Move the sliders and see the result instantly. Hover over the ? icons for explanations.

Required torque – Nm
at speed – rpm

⚠ Important: The motor must deliver the stated torque at the stated speed — not the holding torque at standstill! Stepper motors lose torque at higher speeds. Always check the torque-speed curve in the datasheet. This calculation is a sizing aid and does not replace a detailed engineering design.