1 mph equals 0.868976 kn. To convert mph to kn, multiply the value by 0.868976; divide by 0.868976 to convert back. Enter any number above and the result appears instantly — free and entirely in your browser.
How do you convert mph to kn?
The conversion formula is kn = mph × 0.868976. The conversion factor is fixed by definition, so the result is always exact.
mph to kn conversion table
| mph | kn |
|---|---|
| 10 mph | 8.68976 kn |
| 30 mph | 26.0693 kn |
| 50 mph | 43.4488 kn |
| 80 mph | 69.5181 kn |
| 100 mph | 86.8976 kn |
| 130 mph | 112.967 kn |
What is mph (mph)?
Miles per hour (mph) is the road-speed unit in the US and UK. One mph equals exactly 1.609344 km/h — a 70 mph motorway limit is about 113 km/h.
What is kn (kn)?
The knot (kn) is one nautical mile per hour — exactly 1.852 km/h. It is the standard speed unit in shipping and aviation, and for wind in marine forecasts.
Why convert mph to kn?
Road speeds are posted in km/h in most countries but in mph in the US and UK; shipping and aviation use knots, physics and wind data use metres per second. Converting between them is routine for travel, sailing and sport.
One knot is exactly 1.852 km/h — one international nautical mile (1,852 m, standardised in 1929) per hour. And 100 km/h equals 62.137 mph or 27.778 m/s.
How to convert mph to kn
- Enter the value in mph into the left field of the converter.
- Read the result in kn instantly in the right field — it updates automatically.
- Use the swap button to reverse the direction (kn to mph).
The converter runs entirely in your browser: no uploads, no queue, no limits. You can even use it offline.