Miles per hour to Knots Converter
Convert mile per hour to knot instantly. Type a value below — the result updates as you type.
When you need to convert mile per hour to knot
Speed conversions are handy for driving abroad, reading weather and marine forecasts, or comparing vehicle, wind and running pace figures quoted in unfamiliar units.
Sailing, aviation and marine weather report speed in knots, which converts to mph for everyday context.
Typical values: 0.5 mph is about 0.4345 kn, and 100 mph works out to roughly 86.8976 kn. Because the ratio is fixed at 0.869, you can scale any amount linearly — doubling the miles per hour doubles the knots.
Road signs, aviation and sailing each use their own speed unit, so the same motion can be described several ways.
How to convert mile per hour to knot
One mile per hour equals 0.869 knots. To convert, multiply the number of miles per hour by 0.869:
knots = miles per hour × 0.869
For example, 10 miles per hour × 0.869 = 8.6898 knots.
Miles per hour to knots conversion table
| Speed (mph) | Knots (kn) |
|---|---|
| 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 |
| 50 mph | 43.4488 kn |
| 100 mph | 86.8976 kn |
FAQ
How many knots are in a mile per hour?
One mile per hour = 0.869 knots.
How do I convert knots back to miles per hour?
Divide by 0.869, or use the knots to miles per hour converter.