Miles per Hour to Knots Converter
Convert mph to knots.
Result
0
Knots
1 mph = 0.868976 Knots
How to convert mph to Knots?
How many Knots are in mph? The relationship is:
- 1 mph = 0.868976 Knots
- 1 Knot = 1.15078 mph
To convert mph to Knots, multiply the value by 0.868976 (or divide by 1.15078).
Formula: Knots = mph × 0.868976
Step-by-Step Calculation
- Take the number of mph you want to convert (e.g., 50).
- Multiply that value by 0.868976.
- The result is the value in Knots. (Example: 50 × 0.868976 = 43.4488 Knots).
How to use this converter?
Enter mph and get knots instantly—useful for marine navigation, aviation speeds, and wind speed conversions.
Common mph to Knots Conversions
Quick reference guide for popular mph values.
5 mph = 4.3449 kn
10 mph = 8.6898 kn
20 mph = 17.3795 kn
30 mph = 26.0693 kn
40 mph = 34.759 kn
50 mph = 43.4488 kn
60 mph = 52.1386 kn
70 mph = 60.8283 kn
80 mph = 69.5181 kn
100 mph = 86.8976 kn
History: Why knots are used
Knots are used in aviation and maritime contexts because they relate directly to nautical miles, which align with latitude/longitude navigation and nautical charts.
Common mph to Knots Conversions
| mph Input | Knots Result |
|---|---|
| 5 mph | 4.3449 kn |
| 10 mph | 8.6898 kn |
| 20 mph | 17.3795 kn |
| 30 mph | 26.0693 kn |
| 40 mph | 34.759 kn |
| 50 mph | 43.4488 kn |
| 60 mph | 52.1386 kn |
| 70 mph | 60.8283 kn |
| 80 mph | 69.5181 kn |
| 100 mph | 86.8976 kn |
Frequently Asked Questions
How do I convert mph to knots?
Multiply mph by 0.868976 to get knots.
How many knots is 50 mph?
50 mph equals 43.4488 knots.
How many knots is 100 mph?
100 mph equals 86.8976 knots.
How do I convert knots back to mph?
Multiply knots by 1.15078 to get mph.
Are knots the same as km/h?
No. 1 knot equals 1.852 km/h.