5 tools available
Unit converters for power (W, kW, hp), velocity (m/s, km/h, mph, knots), acceleration and rotational speed. Essential for mechanical engineers and physicists working with motion, drive systems and energy transmission.
Type a speed in any of the five units and all others refresh instantly. Covers the SI standard m/s, the everyday km/h and mph, engineering ft/s and international maritime/aviation knots (kn). One-stop conversion for transport, meteorology and fluid mechanics.
Enter the surface cutting speed in m/min or SFM (surface feet per minute) and the other converts instantly. Cutting speed is the most influential parameter for tool life and machined-surface finish in turning, milling and grinding operations.
Input a machining feed rate in mm/rev, in/rev, mm/min or IPM and the remaining values update immediately. Enter the spindle speed (RPM) to convert between the per-revolution and per-minute families. Essential for CNC programming and process-sheet documentation.
Enter acceleration in any of the three units and the other two update instantly. Covers the SI standard m/s², the US/UK foot-based ft/s², and the engineering standard gravity g (≈ 9.80665 m/s²). Useful for seismology, vehicle dynamics and vibration analysis.
Enter angular velocity in rad/s, RPM or °/s and the other two values refresh immediately. Rad/s is the SI standard used in control theory; RPM is the everyday motor and turbine specification unit; °/s is common in robotics and camera gimbal systems.
Typical engineering problems solved with Dynamics & Motion calculators: