Knots to mph – convert knots to miles per hour
Convert knots to mph (kn to miles per hour) for boats, ships, aircraft and weather reports. This page opens the main speed converter with knots → mph pre-selected so you can quickly translate nautical speeds into familiar road-style values.
Open the interactive knots → mph converter:
Use main converter (knots → mph) or switch to mph → knotsKnots, km/h, mph and m/s all run through the same engine on the homepage. Use the Tool Hub stopwatch or timer for sea trials or flight checks.
Quick reference: knots to mph
The exact factor is 1 knot ≈ 1.15078 mph, so: mph = knots × 1.15078.
| Knots | Miles per hour (approx.) |
|---|---|
| 5 kn | 5.75 mph |
| 10 kn | 11.5 mph |
| 15 kn | 17.3 mph |
| 20 kn | 23.0 mph |
| 30 kn | 34.5 mph |
| 40 kn | 46.0 mph |
How to convert knots to mph
Use:
mph = knots × 1.15078
Examples:
- 8 kn × 1.15078 ≈ 9.21 mph
- 25 kn × 1.15078 ≈ 28.8 mph
- 50 kn × 1.15078 ≈ 57.5 mph
Why convert knots to miles per hour?
- Relating boat or ship speeds to road speeds you’re used to.
- Understanding pilots’ airspeeds in terms of mph.
- Comparing wind speeds given in knots with news or forecasts in mph.
- Explaining nautical speeds to people who only know land-based units.
More speed converters on this site
The converter uses metres per second as the internal base, so knots, mph and km/h all stay consistent.