Knots to MPH Converter
Convert knots to miles per hour instantly. One knot equals exactly 1.150779 miles per hour. Type in either box to convert both ways, then use the chart, worked examples and everyday sizes below.
How to convert knots to miles per hour
Worked example: convert 35 knots to miles per hour. Using miles per hour ← knots × 1.150779448, we get 35 × 1.150779448 = 40.277281 mph. To check the result, convert back: 40.277281 mph ÷ 1.150779448 = 35 kn.
Knots to miles per hour chart
| Knots (kn) | Miles per hour (mph) |
|---|---|
| 1 kn | 1.150779 mph |
| 2 kn | 2.301559 mph |
| 3 kn | 3.452338 mph |
| 4 kn | 4.603118 mph |
| 5 kn | 5.753897 mph |
| 6 kn | 6.904677 mph |
| 8 kn | 9.206236 mph |
| 10 kn | 11.50779 mph |
| 12 kn | 13.80935 mph |
| 15 kn | 17.26169 mph |
| 20 kn | 23.01559 mph |
| 25 kn | 28.76949 mph |
| 30 kn | 34.52338 mph |
| 40 kn | 46.03118 mph |
| 50 kn | 57.53897 mph |
| 75 kn | 86.30846 mph |
| 100 kn | 115.0779 mph |
| 150 kn | 172.6169 mph |
| 200 kn | 230.1559 mph |
| 250 kn | 287.6949 mph |
| 500 kn | 575.3897 mph |
| 1,000 kn | 1,150.779 mph |
Miles per hour to knots (reverse)
| Miles per hour (mph) | Knots (kn) |
|---|---|
| 1 mph | 0.8689762 kn |
| 2 mph | 1.737952 kn |
| 5 mph | 4.344881 kn |
| 10 mph | 8.689762 kn |
| 20 mph | 17.37952 kn |
| 50 mph | 43.44881 kn |
| 100 mph | 86.89762 kn |
| 250 mph | 217.2441 kn |
| 500 mph | 434.4881 kn |
| 1,000 mph | 868.9762 kn |
About the knot and the mile per hour
A knot is one nautical mile per hour. Ships, aircraft and weather services use knots for speed and wind speed.
Miles per hour is the speed unit on road signs and speedometers in the United States and United Kingdom.
One knot equals 1.150779 miles per hour, which makes the knot the faster unit of the two.
Everyday sizes in knots and miles per hour
| Everyday example (approximate) | In knots | In miles per hour |
|---|---|---|
| A slow walk | 2.7214 kn | 3.1317 mph |
| A jogger | 5.8315 kn | 6.7108 mph |
| A city cyclist | 10.691 kn | 12.303 mph |
| Usain Bolt's peak sprint speed | 24.104 kn | 27.738 mph |
| A car on a city road | 27 kn | 31.071 mph |
| A car on a highway | 54 kn | 62.142 mph |
Knots to miles per hour FAQ
How many miles per hour are in one knot?
One knot equals exactly 1.150779448 miles per hour. In the other direction, one mile per hour equals 0.86897624 knots.
How do I convert knots to miles per hour without a calculator?
convert 35 knots to miles per hour. Using miles per hour ← knots × 1.150779448, we get 35 × 1.150779448 = 40.277281 mph. To check the result, convert back: 40.277281 mph ÷ 1.150779448 = 35 kn. For a quick estimate, round the factor to 1.2. Then 35 kn is about 42 mph, compared with the exact 40.2773 mph (an error of 4.3%). That is close enough for planning, but use the calculator above when the number matters.
What is a car on a city road in miles per hour?
A car on a city road is about 27 knots, which is 31.071 miles per hour. Treat that as an approximate everyday figure rather than an official measurement.
Are the knots and miles per hour the same in every country?
One knot is exactly 1.852 km/h (1 nautical mile per hour). One mile per hour is exactly 0.44704 m/s.