Speed & Velocity Converter: km/h, mph, m/s & Knots

This speed converter instantly switches between kilometers per hour, miles per hour, meters per second, knots, and feet per second, covering the units used in driving, sailing, aviation, and sports. It's useful for travelers converting foreign speed limit signs, pilots and sailors working with knots, runners and cyclists tracking pace, and students studying physics. Enter a speed value in any field and the other units update instantly using precise conversion factors, eliminating the need to remember formulas or search for a chart. The calculator is completely free to use, requires no signup, and works equally well on mobile and desktop browsers. Since all calculations run locally in your browser, none of your data is ever transmitted or stored, making the tool both fast and private. Scroll down to enter a speed value and see it converted across every supported unit instantly.