Convert Mile per hour to Knot
Convert Mile per hour to Knot instantly. 1 mph = 0.868977 kn. Formula, worked examples and a quick reference table.
Last updated
One mile per hour equals 0.868977 knot. To convert any number of mile per hours to knots, multiply by 0.86897699.
The converter above works in both directions and updates as you type. Below you will find the formula, a worked example and a reference table of common values.
Mile per hour to Knot formula
To go the other way, use mile per hour = knot ÷ 0.86897699.
About these units
One knot is one nautical mile per hour. The name comes from the knotted rope once trailed behind a ship to measure its speed.
Mile per hour to Knot conversion table
| Mile per hour | Knot |
|---|---|
| 1 mph | 0.869 kn |
| 2 mph | 1.738 kn |
| 3 mph | 2.6069 kn |
| 5 mph | 4.3449 kn |
| 10 mph | 8.6898 kn |
| 20 mph | 17.3795 kn |
| 25 mph | 21.7244 kn |
| 50 mph | 43.4488 kn |
| 100 mph | 86.8977 kn |
| 250 mph | 217.2442 kn |
| 500 mph | 434.4885 kn |
| 1,000 mph | 868.977 kn |
Frequently asked questions
How many knots are in a mile per hour? +
There are 0.868977 knots in one mile per hour.
What is 10 mph in kn? +
10 mph equals 8.6898 kn. Multiply 10 by 0.86897699.
How do I convert knot back to mile per hour? +
Use mile per hour = knot ÷ 0.86897699. The converter above handles both directions, or see our dedicated Knot to Mile per hour page.