How many miles per hour are in a knot?

There are 1.15078 miles per hour in one knot. To convert knots to miles per hour, multiply the number of knots by 1.15078.

How do I convert 40 knots to miles per hour?

Multiply 40 by 1.15078: 40 knots is 46.03 miles per hour.

Why is a knot faster than a mile per hour?

A knot is one nautical mile (1,852 m) per hour, and a nautical mile is longer than a statute mile (1,609 m) — so 1 knot is about 1.151 mph.

Knots to mph

1 knot is 1.15078 miles per hour.

To convert knots to miles per hour, multiply the number of knots by 1.15078.
Going the other way, 1 mile per hour is 0.868976 knots.
For example, 40 knots is 46.03 miles per hour.

Conversion

Common knots to miles per hour conversions
Knots (kn)	mph (mph)
1	1.15
5	5.75
10	11.51
15	17.26
20	23.02
25	28.77
30	34.52
35	40.28
40	46.03
50	57.54
64	73.65
74	85.16
100	115.08
150	172.62
250	287.69
500	575.39

About knots and miles per hour

A knot is one nautical mile per hour, and a nautical mile is exactly 1,852 meters. Sailors, pilots, and meteorologists use knots; hurricane force begins at 64 knots, about 74 mph.

Frequently asked questions

How many miles per hour are in a knot?: There are 1.15078 miles per hour in one knot. To convert knots to miles per hour, multiply the number of knots by 1.15078.
How do I convert 40 knots to miles per hour?: Multiply 40 by 1.15078: 40 knots is 46.03 miles per hour.
Why is a knot faster than a mile per hour?: A knot is one nautical mile (1,852 m) per hour, and a nautical mile is longer than a statute mile (1,609 m) — so 1 knot is about 1.151 mph.