Miles per hour to Knots Converter
Convert miles per hour (mph) to knots (kn) instantly. Type a value above and the result updates while you type. 1 mile per hour equals 0.868976 knots.
Result updates as you type. Values are calculated locally in your browser — nothing is sent to a server.
The formula
1 mile per hour = 0.868976 knots
Multiply the miles per hour value by 0.868976 to get knots. Or divide by 1.15078 to go the other way.
Miles per hour to knots conversion table
| mph | kn |
|---|---|
| 1 | 0.868976 |
| 2 | 1.73795 |
| 3 | 2.60693 |
| 4 | 3.4759 |
| 5 | 4.34488 |
| 6 | 5.21386 |
| 7 | 6.08283 |
| 8 | 6.95181 |
| 9 | 7.82079 |
| 10 | 8.68976 |
| 15 | 13.0346 |
| 20 | 17.3795 |
| 25 | 21.7244 |
| 50 | 43.4488 |
| 75 | 65.1732 |
| 100 | 86.8976 |
Worked examples
- 5 mph × 0.868976 = 4.34488 kn
- 30 mph × 0.868976 = 26.0693 kn
- 165 mph × 0.868976 = 143.381 kn
Conversion factors follow the exact international definitions (SI/BIPM; imperial units per the 1959 International Yard and Pound Agreement, maintained by NIST). NIST unit conversion reference
Factors last verified August 2026 · Built by Jeffrey Tepper.
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Frequently asked questions
How many knots are in 1 mile per hour?
1 mile per hour equals 0.868976 knots (mph → kn).
How do you convert miles per hour to knots?
Multiply the number of miles per hour by 0.868976. For example: 10 mph × 0.868976 = 8.68976 kn.
What is 50 mph in kn?
50 mph equals 43.4488 kn.
Which is bigger: 1 mile per hour or 1 knot?
1 knot is bigger: 1 mile per hour is only 0.868976 knots.