Knots to Mph Converter

One knot equals 1.15077945 mph. The knot is defined as one nautical mile per hour, and a nautical mile is 1,852 meters, so the conversion to statute miles per hour falls just over 1.15.

Multiply knots by 1.15077945 to get mph. To go the other way, divide mph by 1.15077945. Knots to km/h is exact at 1.852 since both units derive from the international nautical mile.

One knot is exactly one international nautical mile per hour. A nautical mile is close to one minute of latitude along a meridian, which makes the unit convenient for chart navigation. The match is approximate because Earth is not a perfect sphere.

Hurricane-force winds start at 64 knots on the Beaufort scale, which is about 73.6 mph or 118.5 km/h. The Saffir-Simpson scale used for tropical storms uses the same 74 mph threshold for a Category 1 hurricane.

Yes. The international nautical mile is defined as exactly 1,852 meters, so one knot is exactly 1.852 km/h. The mph value (1.15077945) is a rounded decimal because the statute mile (1,609.344 m) is a different base unit.