A unit of speed used in the nautical environment, equivalent to 1.85 km/h. One knot is equal to one nautical mile per hour, and this conversion is the appropriate way to estimate the duration of a passage based on a boat’s average speed. For example, if a sailor wishes to travel a distance of 20 miles at a cruising speed of 10 knots (or 10 miles per hour), they will know that it will take 2 hours to reach their destination.