Formula
mph = kn × 1.15078 kn = mph × 0.868976
Worked example: 12 kn × 1.15078 = 13.8094 mph.
Conversion table: kn to mph
| kn | mph | km/h |
|---|---|---|
| 1 | 1.15078 | 1.852 |
| 5 | 5.7539 | 9.26 |
| 8 | 9.20624 | 14.816 |
| 10 | 11.5078 | 18.52 |
| 12 | 13.8094 | 22.224 |
| 15 | 17.2617 | 27.78 |
| 20 | 23.0156 | 37.04 |
| 25 | 28.7695 | 46.3 |
| 30 | 34.5234 | 55.56 |
| 40 | 46.0312 | 74.08 |
| 50 | 57.539 | 92.6 |
| 100 | 115.078 | 185.2 |
Conversion table: mph to kn
| mph | kn |
|---|---|
| 1 | 0.868976 |
| 5 | 4.34488 |
| 8 | 6.95181 |
| 10 | 8.68976 |
| 12 | 10.4277 |
| 15 | 13.0346 |
| 20 | 17.3795 |
| 25 | 21.7244 |
| 30 | 26.0693 |
| 40 | 34.759 |
| 50 | 43.4488 |
| 100 | 86.8976 |
FAQ
How do I convert kn to mph?
Multiply by 1.15078. To go back, multiply by 0.868976.
Why is a knot faster than a mile per hour?
A nautical mile is 1 852 m, longer than the 1 609.344 m statute mile, so a knot is about 15 % faster than a mile per hour.
Why do ships and aircraft use knots?
One nautical mile is one minute of latitude, so distances on a chart and speeds in knots fit together without conversion.
Where can I convert other speed units?
The speed unit converter converts between every unit of speed on the site.