Speed Converter
Convert speed and velocity measurements between km/h, mph, m/s, and knots.
About this tool
In physics, speed is a scalar quantity that refers to the rate at which an object covers distance over time. Different industries and geographic regions utilize completely different standards for measuring speed. For example, scientific computations (the SI system) use meters per second (m/s), daily road traffic in Europe uses kilometers per hour (km/h), the United States uses miles per hour (mph), and global aviation and maritime navigation rely on knots.
This Speed Converter translates velocity and speed measurements across these disparate systems. By inputting a speed value in one format, the tool applies conversion coefficients to calculate the exact equivalents in all other supported units. This is particularly useful for mechanical engineers, pilots, sailors, or drivers crossing international borders with differing speed limits. This tool is free to use and requires no registration.