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Knots to kph Converter
Enter a speed in knots to see the exact equivalent in kilometers per hour.
knots
What this calculator does
This tool converts a speed measured in knots (nautical miles per hour) into kilometers per hour, along with miles per hour and meters per second.
How the calculation works
One knot equals exactly 1.852 kilometers per hour, since a nautical mile is defined as exactly 1.852 kilometers. The calculator multiplies your entered speed in knots by 1.852 to get km/h, and applies the equivalent standard factors for mph and m/s.
This tool is intended for general aviation, marine, weather, and educational reference.
Last reviewed August 2026