How to convert knots to miles per hour
One knot equals 1.150779 miles per hour. To convert, multiply the number of knots by 1.150779:
Mental-math shortcut: Add 15%: 20 kn ≈ 23 mph (exact: 23.02 mph).
Example
Convert 20 knots to miles per hour: 20 kn × 1.150779 = 23.0156 mph.
Knots to mph conversion chart
| Knots (kn) | mph (mph) |
|---|---|
| 1 | 1.1508 |
| 5 | 5.7539 |
| 10 | 11.5078 |
| 15 | 17.2617 |
| 20 | 23.0156 |
| 25 | 28.7695 |
| 30 | 34.5234 |
| 35 | 40.2773 |
| 40 | 46.0312 |
| 50 | 57.539 |
| 60 | 69.0468 |
| 100 | 115.08 |
| 150 | 172.62 |
| 250 | 287.69 |
| 500 | 575.39 |
What is a knot?
A knot (kn or kt) is one nautical mile per hour — exactly 1.852 km/h, or about 1.151 mph. Knots are the standard speed unit at sea and in aviation, and for wind speed in marine and aviation weather forecasts. A nautical mile is based on one minute of latitude.
What is a mile per hour?
Miles per hour (mph) is used for speed limits in the United States and the United Kingdom. One mile per hour equals exactly 1.609344 km/h, so 60 mph is about 96.6 km/h.
Converting the other way? Use the mph to Knots converter.
Frequently asked questions
How many miles per hour is one knot?
One knot is 1.150779 miles per hour.
How do I convert knots to miles per hour?
Multiply the value in knots by 1.150779. For example, 20 kn × 1.150779 = 23.0156 mph.
What is 100 kn in miles per hour?
100 kn is 115.08 miles per hour.
How do I convert miles per hour to knots?
Multiply miles per hour by 0.868976 (or divide by 1.150779). You can also use our mph to Knots converter.
Conversions use the internationally agreed definitions of each unit (for example, 1 inch = 2.54 cm exactly) and are rounded for display. Volume converters use US customary units unless stated otherwise.
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