Convert Knot to Mile per Hour.
Input the value of knots below to convert instantly to miles per hour with standard conversions, definitions, and equations.
About converting knots to miles per hour
Knots to miles per hour translates the nautical and aviation speed unit into the road-speed terms most people picture.
A knot is one nautical mile per hour, and since a nautical mile is 1.852 km, one knot equals about 1.15078 mph. To convert, multiply knots by 1.151. So 10 knots is 11.5 mph, and a 30-knot wind is 34.5 mph.
Knots persist in sailing, shipping, and aviation because the nautical mile is tied to the Earth's geometry — one nautical mile is roughly one minute of latitude — which makes navigation by chart and latitude far simpler. That is why a plane's airspeed or a hurricane's wind speed is quoted in knots even though the public hears it converted to mph.
- Quick estimate: knots × 1.15, or just add about 15%.
- 1 knot ≈ 1.15 mph ≈ 1.85 km/h — three units, one speed.
How to Convert Knots to Miles per hour
To convert knot to mile per hour, we use the official conversion formulas. Below is the mathematical formula, plain-English explanation, and a worked example.
Knot (kt)
Speed unit equal to one nautical mile per hour. Standard in aviation, maritime, and meteorology.
Mile per Hour (mph)
Speed unit used primarily in the US and UK for road speed limits.
Knot to Mile per Hour Conversion Table
| Knot (kt) | Mile per Hour (mph) |
|---|---|
| 1 kt | 1.15078 mph |
| 2 kt | 2.30156 mph |
| 3 kt | 3.45234 mph |
| 5 kt | 5.75389 mph |
| 10 kt | 11.50778 mph |
| 15 kt | 17.26168 mph |
| 20 kt | 23.01557 mph |
| 25 kt | 28.76946 mph |
| 50 kt | 57.53892 mph |
| 100 kt | 115.07785 mph |
| 250 kt | 287.69461 mph |
| 500 kt | 575.38923 mph |
| 1000 kt | 1150.77845 mph |
Mile per Hour to Knot Conversion Table
| Mile per Hour (mph) | Knot (kt) |
|---|---|
| 1 mph | 0.86898 kt |
| 2 mph | 1.73795 kt |
| 3 mph | 2.60693 kt |
| 5 mph | 4.34488 kt |
| 10 mph | 8.68977 kt |
| 15 mph | 13.03465 kt |
| 20 mph | 17.37954 kt |
| 25 mph | 21.72442 kt |
| 50 mph | 43.44885 kt |
| 100 mph | 86.8977 kt |
| 250 mph | 217.24425 kt |
| 500 mph | 434.4885 kt |
| 1000 mph | 868.97699 kt |