Speed limits, running pace, wind speeds and vehicle specs all use different units depending on where you are. A car manual may list km/h while a road sign shows mph, and sailors talk in knots. Converting between them by hand is fiddly — this tool does it instantly.
Enter any value, choose the unit you are starting from, and every other common speed unit is shown at once. The converter uses exact standard conversion factors.
How many km/h are in 1 mph? One mile per hour equals about 1.609 km/h.
What is a knot? A knot is one nautical mile per hour, equal to 1.852 km/h.
Does it support decimals? Yes — decimals and large values are fully supported.