knots to mph
Unit Converters

knots to mph

Convert knots to miles per hour (or mph to knots) instantly. Type a value in either field and the other updates live; use the swap button to flip the direction.

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How It Works

One knot is about 1.15078 miles per hour, so to convert knots to mph you multiply by 1.15078. To go the other way, divide mph by 1.15078.

Frequently Asked Questions

How many mph is one knot?
One knot is approximately 1.15078 miles per hour. A knot is defined as one nautical mile per hour, and a nautical mile is about 1.15078 statute miles.
Why are knots used in aviation and shipping?
Knots are based on nautical miles, which are defined relative to the Earth's circumference (one nautical mile = one minute of latitude). This makes navigation and chart plotting simpler than using statute miles.
Is a knot faster than mph?
Yes, slightly. One knot is about 1.15 mph, so a speed of 100 knots is roughly 115 mph. The difference comes from the nautical mile being longer than a statute mile.

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