How it's calculated
mph = knots × 1.15078
knots = speed in knots, mph = miles per hour. 1 knot = 1 nautical mile per hour = 1.15078 mph.
Common values
| Knots | MPH |
|---|---|
| 1 kn | 1.151 mph |
| 10 kn | 11.51 mph |
| 50 kn | 57.54 mph |
| 100 kn | 115.08 mph |
| 500 kn | 575.39 mph |
Common questions
How fast is one knot in mph?
One knot equals about 1.151 miles per hour, because a nautical mile is 1,852 meters versus 1,609 for a statute mile.
Why do ships and planes use knots?
A knot is one nautical mile per hour, and a nautical mile maps directly to one minute of latitude, which makes navigation and chart work simpler.