Convert Miles per hour to knots

1 mile per hour = 0.868976 knots · kn = mph ÷ 1.150779448

mph
Knots
0.868976kn

1 mile per hour = 0.868976 knots

When you need this conversion

This conversion goes from miles per hour, the road speed unit in the US and UK, to knots, the navigation speed unit for aviation and sailing. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.

Miles per hour to knots conversion table

Conversion table from miles per hour to knots
Miles per hour (mph)Knots (kn)
1 mph0.868976 kn
2 mph1.738 kn
3 mph2.6069 kn
5 mph4.3449 kn
10 mph8.6898 kn
15 mph13.0346 kn
20 mph17.3795 kn
25 mph21.7244 kn
50 mph43.4488 kn
75 mph65.1732 kn
100 mph86.8976 kn
250 mph217.24 kn
500 mph434.49 kn
1,000 mph868.98 kn

The formula

kn = mph ÷ 1.150779448

Because both units measure speed, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.

Convert the other way

Knots to miles per hour →

Related speed conversions

All speed conversions →

Frequently asked questions

How many knots are in a mile per hour?
There are 0.868976 knots in 1 mile per hour. The formula is kn = mph ÷ 1.150779448.
How do you convert miles per hour to knots?
Use the formula kn = mph ÷ 1.150779448. For example, 10 miles per hour equals 8.6898 knots.
Is the miles per hour to knots conversion exact?
Yes. Miles per hour and knots are both units of speed, related by an exact defined factor. Displayed results are rounded for readability.
What is mph short for?
mph is the standard symbol for mile per hour. kn is the symbol for knot.