How to convert miles per hour to knots
To convert miles per hour to knots, multiply by 0.868976241901. Speed conversions are used for driving, aviation, sailing, sports and physics problems.
Mile per Hour to Knot conversion table
| Mile per Hour (mph) | Knot (kn) |
|---|---|
| 0.1 mph | 0.0868976241901 kn |
| 0.5 mph | 0.43448812095 kn |
| 1 mph | 0.868976241901 kn |
| 2 mph | 1.7379524838 kn |
| 3 mph | 2.6069287257 kn |
| 4 mph | 3.4759049676 kn |
| 5 mph | 4.3448812095 kn |
| 10 mph | 8.68976241901 kn |
| 20 mph | 17.379524838 kn |
| 25 mph | 21.7244060475 kn |
| 50 mph | 43.448812095 kn |
| 100 mph | 86.8976241901 kn |
| 500 mph | 434.48812095 kn |
| 1,000 mph | 868.976241901 kn |
About the units
Mile per Hour (mph)
Miles per hour is the road speed unit in the US and UK; 1 mph is exactly 0.44704 m/s.
Knot (kn)
A knot is one nautical mile (1,852 m) per hour, used in aviation and at sea.
How to use this converter
- Type the number of miles per hour (mph) in the input box.
- The result in knots appears instantly — no button needed.
- See the same value in every other speed unit just below.
- Use “Swap units” to convert knots back to miles per hour.
Tips for better results
- Double-check which system a unit belongs to (for example US vs UK gallons).
- Use the swap button to convert in the opposite direction instantly.
- Bookmark the conversions you use most — each pair has its own page.
Frequently asked questions
How many knots are in one mile per hour?
One mile per hour equals 0.868976241901 knots. 0.868976241901 is the exact factor used by this converter.
How do I convert miles per hour to knots?
Multiply the value in miles per hour by 0.868976241901. To go the other way, multiply knots by 1.15077944802.
What is 10 mph in kn?
10 mph = 8.68976241901 kn. Also, 5 mph = 4.3448812095 kn and 100 mph = 86.8976241901 kn.
What is the difference between a mile per hour and a knot?
Miles per hour is the road speed unit in the US and UK; 1 mph is exactly 0.44704 m/s. A knot is one nautical mile (1,852 m) per hour, used in aviation and at sea.
Is this tool free and private?
Yes — the Mile per Hour to Knot is completely free with no sign-up, and it runs entirely in your browser, so the values you enter are never uploaded to our servers.
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