Knots to Miles per hour Converter kn → mph

1 knot (kn) = 1.150779448 miles per hour (mph). Type a value below — the conversion happens instantly, entirely on your device.

From

1 kn = 1.150779448 mph

Precision

20 knots = 23.015589 miles per hour

20 × 1.15078 = 23.015589

1 kn equals 1.15078 mph, so multiplying by 1.15078 converts the value. The result describes the exact same quantity — only the measuring stick changes.

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How to convert knots to miles per hour

miles per hour = knots × 1.150779448 — multiply the knot value by 1.15078.

Example: 20 kn = 23.0156 mph.

To convert the other way: knots = miles per hour ÷ 1.150779448 — or use the dedicated mph to kn converter .

Knots-to-mph matters for sailing, aviation and hurricane reports. A 20-knot wind is 23 mph; hurricane force (64 kn) is 73.6 mph. One knot is 1.15078 mph.

Knots to Miles per hour conversion table

Knots (kn)	Miles per hour (mph)
0.1	0.11507794
0.25	0.28769486
0.5	0.57538972
1	1.1507794
2	2.3015589
3	3.4523383
4	4.6031178
5	5.7538972
6	6.9046767
7	8.0554561
8	9.2062356
9	10.357015
10	11.507794
15	17.261692
20	23.015589
25	28.769486
30	34.523383
40	46.031178
50	57.538972
75	86.308459
100	115.07794
250	287.69486
500	575.38972
1000	1150.7794

About the units

What is a knot?

A knot (kn) is one nautical mile per hour, exactly 1.852 km/h. Aircraft, ships and wind speeds in meteorology are measured in knots.

What is a mile per hour?

Miles per hour (mph) is the road-speed unit of the United States and United Kingdom. 1 mph is exactly 1.609344 km/h.

Frequently asked questions

How many miles per hour are in 1 knot?

1 knot (kn) = 1.150779448 miles per hour (mph).

What is the formula to convert knots to miles per hour?

miles per hour = knots × 1.150779448 — multiply the knot value by 1.15078.

How do I convert kn to mph without a calculator?

Multiply by 1.15 for a close estimate. Exact factor: 1 kn = 1.150779448 mph.

Is this kn-to-mph converter accurate and private?

Yes. It uses the exact internationally defined conversion factors and computes results locally in your browser — your input is never sent to a server, and the page keeps working offline.