Knots to Miles per Hour Converter

Knots to mph Converter

mph
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km/h
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1 knot = 1.15078 mph · 1 knot = 1.852 km/h

How to convert knots to mph

To convert knots to miles per hour, multiply by 1.15078. For example, 20 knots × 1.15078 = 23.016 mph. To convert knots to km/h, multiply by 1.852 instead.

Going the other way — to convert mph to knots — divide by 1.15078. So 60 mph ÷ 1.15078 = 52.139 knots.

A knot is defined as one nautical mile per hour. One nautical mile = 1.852 km = 1.15078 miles. Knots are used in aviation, maritime navigation, and meteorology worldwide. Wind speeds in weather forecasts are often given in knots.

Knots to mph conversion table

Knots (kn) mph km/h
1 kn1.151 mph1.852 km/h
5 kn5.754 mph9.260 km/h
10 kn11.508 mph18.520 km/h
15 kn17.262 mph27.780 km/h
20 kn23.016 mph37.040 km/h
25 kn28.770 mph46.300 km/h
30 kn34.523 mph55.560 km/h
50 kn57.539 mph92.600 km/h
100 kn115.078 mph185.200 km/h
500 kn575.390 mph926.000 km/h

Frequently asked questions

How many mph is 1 knot?
1 knot = 1.15078 mph = 1.852 km/h. A knot is one nautical mile per hour.
Why are knots used in aviation and sailing?
Knots are based on nautical miles which are directly related to degrees of latitude on the Earth. This makes navigation calculations much simpler. One nautical mile = one arcminute of latitude.
How many knots is 200 mph?
200 mph = 173.795 knots. Calculation: 200 ÷ 1.15078 = 173.80 knots.
How fast is 30 knots in mph?
30 knots = 34.523 mph = 55.56 km/h. This is a typical cruising speed for a fast motorboat.
How fast do commercial planes fly in knots?
Commercial aircraft typically cruise at 450-500 knots = 518-575 mph = 833-926 km/h at altitude.