Knots to Miles per Hour
One knot equals 1.150779 miles per hour.
Miles per Hour = knots × 1.150779448
By Piero Nanni · Last checked
Knots to Miles per Hour Calculator
How to Convert Knots to Miles per Hour
Formula:
Miles per Hour = knots × 1.150779448
Worked example:
35 knots × 1.150779448 = 40.2773 miles per hour
Knots to Miles per Hour Conversion Table
| kn | mph |
|---|---|
| 1 | 1.1508 |
| 1.5 | 1.7262 |
| 2 | 2.3016 |
| 2.5 | 2.8769 |
| 3 | 3.4523 |
| 4 | 4.6031 |
| 5 | 5.7539 |
| 6 | 6.9047 |
| 7 | 8.0555 |
| 7.5 | 8.6308 |
| 8 | 9.2062 |
| 9 | 10.357 |
| 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 |
| 70 | 80.5546 |
| 74 | 85.1577 |
| 75 | 86.3085 |
| 80 | 92.0624 |
| 90 | 103.5702 |
| 100 | 115.0779 |
| 150 | 172.6169 |
| 200 | 230.1559 |
About This Conversion
Knots to miles per hour converts marine and aviation speeds into road units. A knot is one nautical mile per hour, and since a nautical mile is 1,852 m, one knot is 1.15078 mph.
Hurricane categories are defined in knots and then reported in mph, which is why the thresholds look arbitrary. Category 1 begins at 64 knots, which is 74 mph; Category 5 begins at 137 knots, which is 157 mph. The round numbers are in the knots, not the miles.
Frequently Asked Questions
How many mph is a knot?
One knot is 1.15078 mph.
How fast is 20 knots in mph?
20 knots is 23.02 mph.
Why do ships and aircraft use knots?
A nautical mile is one minute of latitude, so speed in knots maps directly onto position on a chart.
What wind speed is a Category 1 hurricane?
64 knots, which is 74 mph or 119 km/h.