EngiRef / Speed conversion
Convert Miles/hour to Knots (mph to kn)
1 mph = 0.868976242 kn. Convert miles/hour to knots with the exact factor, a common-values table and a free converter.
Conversion factor
kn = mph × 0.868976242
1 mph = 0.868976242 kn
Multiply by 0.868976242 kn to go from miles/hour to knots, or divide by it to come back. The factor and every value below are computed by the same converter that runs at /convert, so this page and the tool cannot disagree.
mph to kn table
| Miles/hour (mph) | Knots (kn) |
|---|---|
| 1 mph | 0.868976242 kn |
| 2 mph | 1.73795248 kn |
| 5 mph | 4.34488121 kn |
| 10 mph | 8.68976242 kn |
| 20 mph | 17.3795248 kn |
| 50 mph | 43.4488121 kn |
| 100 mph | 86.8976242 kn |
Every figure is computed at build time by the site’s own converter from the speed unit registry. For a value that is not listed, put it into the interactive converter.
Frequently asked questions
How many knots are in one mile/hour?
One mile/hour is 0.868976242 kn, so 100 mph is 86.8976242 kn.
What is the formula to convert miles/hour to knots?
kn = mph × 0.868976242. Multiply the value in miles/hour by 0.868976242 to get knots.
How do I convert knots back to miles/hour?
mph = kn × 1.15077945, so 1 kn is 1.15077945 mph. The kn to mph page carries the same table in that direction.