⚡ Speed
Mph to Knots Converter
Convert mph to knots instantly. Enter any value and get the result. Includes a conversion table and the exact formula.
Quick answer: To convert mph to knots, multiply by 0.868976. For example, 1 mph = 0.868976 knots. Use the calculator below for any value.
mph to knots
→
Common conversions
| Mph | Knots |
|---|
Formula:
How to convert mph to knots
1
Enter your value
Type the number of mph you want to convert into the left box. The result in knots appears instantly in the right box. You can also type into the right box to convert in the other direction.
2
Use the swap button
Click the ⇄ Swap button to reverse the conversion — Knots to Mph. Your current value carries across so you don't have to re-enter anything.
3
About Mph and Knots
mph and knots are both units of speed. Use this converter to switch between them instantly.
💡 Did you know?
1 mph = 0.869 knots. 1 knot = 1 nautical mile/hour. The nautical mile (1.852 km) was defined as 1 arc-minute of latitude so that 1 knot gives clean navigation maths — useful when GPS didn't exist.
📊 Common conversions at a glance
| Mph | Knots |
|---|---|
| 10 | 8.69 |
| 20 | 17.38 |
| 30 | 26.07 |
| 40 | 34.76 |
| 50 | 43.45 |
| 60 | 52.14 |
Reviewed for 2026. Mph ↔ Knots conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.