Speed Converter
Convert among m/s, km/h, miles per hour (mph), feet per second (ft/s), and knots (kn).
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Formula
kn = mph × 0.8689762419
Example
Example: convert 120 miles per hour to knots.
120 mph = 104.27714903 kn
Conversion table
| miles per hour (mph) | knots (kn) |
|---|---|
| 1 mph | 0.86897624 kn |
| 2 mph | 1.73795248 kn |
| 5 mph | 4.34488121 kn |
| 10 mph | 8.68976242 kn |
| 20 mph | 17.37952484 kn |
| 50 mph | 43.4488121 kn |
| 100 mph | 86.89762419 kn |
Explanation
Miles per hour are used in the United States and the United Kingdom for road speeds, while Knots are commonly used for maritime and aviation speeds.
How to convert miles per hour to knots
- Start with the value in miles per hour (mph).
- Multiply it by 0.8689762419.
- The result is the measurement in knots (kn).
Example: 120 mph → 104.27714903 kn
Frequently Asked Questions
How much is 120 miles per hour in knots?
120 miles per hour is about 104.277 knots.
How many knots is 1 mile per hour?
1 mile per hour is about 0.868976 knots.
How many miles per hour is 1 knot?
1 knot is about 1.150779 miles per hour.
What is the difference between miles per hour and knots?
Both measure speed, but they use different distance and time units. Miles per hour express speed in miles and hours (mph). Knots express it in nautical miles per hour (knots).
Where are miles per hour and knots used?
Miles per hour are used for road speeds and speed limits in the US and in some UK contexts. Knots are used in maritime navigation and aviation (speed through water/air).
Why does 1 mile per hour equal 0.868976 knots?
Because the units are defined from distance and time units (for example, kilometers/hours or feet/seconds), which determines the conversion factor.