Skip to content

Knots to miles per hour (kn to mph)

1 kn = 1.150779448 mph. Enter any value below to convert knots to miles per hour instantly, or use the speed converter for every other unit.

Maintained by Jairo TunisseLast updated Editorial policy

1 kn = 1.150779448 mph

mph = kn × 1.150779448
1 mph = 0.8689762419 kn

Convert speed

Common speed conversions

1 mph1.609344 km/h
1 km/h0.6213711922 mph
1 kn1.852 km/h
1 m/s3.6 km/h
1 mph0.44704 m/s
1 kn1.150779448 mph

Knots to miles per hour conversion table

Knots to miles per hour
Knots (kn)Miles per hour (mph)
1 kn1.150779448 mph
5 kn5.75389724 mph
10 kn11.50779448 mph
15 kn17.26169172 mph
20 kn23.01558896 mph
30 kn34.52338344 mph
50 kn57.5389724 mph
100 kn115.0779448 mph
500 kn575.389724 mph

The formula

mph = kn × 1.150779448

1 kn = 1 nmi/h = 1,852 m/h. 1 mph = 0.44704 m/s (exact). These are exact definitions, so the only rounding is in the displayed result (10 significant digits).

When you need it

Knots to mph is used for boating, aviation and marine weather forecasts, where wind and vessel speeds are given in knots. A knot is one nautical mile per hour, about 1.15 mph.

More speed converter conversions

Frequently asked questions

How do I convert knots to miles per hour?

Multiply the value in knots by 1.150779448 (or divide by 0.8689762419). For example, 15 kn = 17.26169172 mph.

How many miles per hour are in one knot?

1 kn = 1.150779448 mph.

Why do ships and planes use knots?

A nautical mile matches one arcminute of latitude, which makes navigation on charts straightforward.

What wind speed in knots is a hurricane?

Hurricane force begins at 64 knots, about 74 mph.

Related calculators