1 knot equals exactly
1.852 km/h
The knot (kn) is the unit of speed used in nautical and aviation contexts, corresponding to one nautical mile per hour. One nautical mile (1,852 meters) is a measurement based on the Earth's circumference. One knot is exactly equal to 1.852 km/h.
To convert a measurement from knots to km/h, simply multiply the value in knots by 1.852:
To convert from km/h to knots, perform the inverse operation, dividing by 1.852:
This conversion is the worldwide standard reference for the speed of ships, boats, and aircraft, and is also used by meteorologists indicating wind speed in marine forecasts, where converting to the more familiar km/h helps non-sailors understand the conditions.