How to convert miles per hour to knots
kn = mph × 0.8689762419Multiply the value in miles per hour by 0.8689762419. To go the other way, multiply by 1.150779448 (or divide by 0.8689762419).
A mile per hour is smaller than a knot: it takes 1.150779448 miles per hour to make one knot.
Worked examples
- 1 mile per hour1 mph × 0.8689762419 = 0.8689762419 kn
- 5 miles per hour5 mph × 0.8689762419 = 4.34488121 kn
- 10 miles per hour10 mph × 0.8689762419 = 8.689762419 kn
- 20 miles per hour20 mph × 0.8689762419 = 17.37952484 kn
- 100 miles per hour100 mph × 0.8689762419 = 86.89762419 kn
Miles per hour to knots conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Miles per hour (mph) | Knots (kn) |
|---|---|
| 0.1 mph | 0.086897624 kn |
| 0.25 mph | 0.21724406 kn |
| 0.5 mph | 0.43448812 kn |
| 1 mph | 0.86897624 kn |
| 2 mph | 1.7379525 kn |
| 3 mph | 2.6069287 kn |
| 4 mph | 3.475905 kn |
| 5 mph | 4.3448812 kn |
| 6 mph | 5.2138575 kn |
| 7 mph | 6.0828337 kn |
| 8 mph | 6.9518099 kn |
| 9 mph | 7.8207862 kn |
| 10 mph | 8.6897624 kn |
| Miles per hour (mph) | Knots (kn) |
|---|---|
| 12 mph | 10.427715 kn |
| 15 mph | 13.034644 kn |
| 20 mph | 17.379525 kn |
| 25 mph | 21.724406 kn |
| 30 mph | 26.069287 kn |
| 40 mph | 34.75905 kn |
| 50 mph | 43.448812 kn |
| 75 mph | 65.173218 kn |
| 100 mph | 86.897624 kn |
| 250 mph | 217.24406 kn |
| 500 mph | 434.48812 kn |
| 1,000 mph | 868.97624 kn |
About the units
Mile per hour (mph)
Exactly 0.44704 m/s. Used for road speeds in the US and UK; 60 mph is about 96.6 km/h.
Knot (kn)
One nautical mile per hour (about 1.15 mph). The standard speed unit for ships, aircraft and wind reports. One knot equals 0.5144444444 meters per second (m/s).
Frequently asked questions
How many knots are in one mile per hour?
There are 0.8689762419 knots in one mile per hour, and this value is exact by definition.
How do I convert miles per hour to knots?
Multiply the number of miles per hour by 0.8689762419. For example, 10 mph × 0.8689762419 = 8.689762419 kn.
How many miles per hour are in one knot?
One knot equals 1.150779448 miles per hour. That is the reverse factor, 1 ÷ 0.8689762419.
What is 10 miles per hour in knots?
10 mph = 8.689762419 kn.
Is this mph to kn converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.