how fast is a knot?
<answer> 1 nautical mile per hour. <context> 1 knot = 1.15077945 miles per hour. A knot is a speed of 1 nautical mile per hour. A nautical mile has been defined in slightly varying ways over time. It is based on the distance traveled in moving 1 minute of arc along any meridian. Since the Earth is not a perfect sphere, the exact distance changes from place to place.