About these units
knot (kn)
A knot (kn) is one nautical mile (1,852 m) per hour, used at sea, in aviation and for wind speed.
mile per hour (mph)
Miles per hour (mph) is the road speed unit in the US and UK. 1 mph is about 1.609 km/h.
Knots to Miles per Hour
1 kn = 1.150779 mph · 1 mph = 0.8689762 kn
20 kn = 23.01558896 mph
Formula: mph = kn × 1.150779448
Height (feet + inches ↔ cm)
ftin=cm
20 kn in other units
| 10.28888889 m/s | |
| 37.04 km/h | |
| 23.01558896 mph | |
| 33.75619714 ft/s | |
| 0.03023529327 Mach |
How to convert knots to miles per hour
- Start from the exact relation:
1 kn = 1.150779448 mph - Put your value into the formula:
mph = kn × 1.150779 - Round to the precision you need. The tables on this page show 2 to 3 decimals.
Worked examples
52 × 1.150779 = 59.84 mph20 × 1.150779 = 23.02 mph
Mental-math shortcut
Use kn × 1.15. For 52 kn that gives about 59.8 mph instead of 59.84 mph (0.068% too low).
Definition and source: 1 knot = 1 nautical mile per hour = 1,852 m/h = 1.852 km/h exactly (≈1.1508 mph). The 1,852 m nautical mile was adopted internationally in 1929. Source: NIST SP 811 (2008), Guide for the Use of the SI, Appendix B (checked 2026-10-12).
kn to mph table
| kn | mph |
|---|---|
| 1 kn | 1.151 mph |
| 5 kn | 5.754 mph |
| 10 kn | 11.51 mph |
| 15 kn | 17.26 mph |
| 20 kn | 23.02 mph |
| 25 kn | 28.77 mph |
| 30 kn | 34.52 mph |
| 34 kn | 39.13 mph |
| 40 kn | 46.03 mph |
| 50 kn | 57.54 mph |
| 52 kn | 59.84 mph |
| 56 kn | 64.44 mph |
| 60 kn | 69.05 mph |
| 93 kn | 107.02 mph |
| 100 kn | 115.08 mph |
| 150 kn | 172.62 mph |
| 155 kn | 178.37 mph |
| 250 kn | 287.69 mph |
| 500 kn | 575.39 mph |
mph to kn table
| mph | kn |
|---|---|
| 1 mph | 0.869 kn |
| 2 mph | 1.738 kn |
| 3 mph | 2.607 kn |
| 4 mph | 3.476 kn |
| 5 mph | 4.345 kn |
| 6 mph | 5.214 kn |
| 7 mph | 6.083 kn |
| 8 mph | 6.952 kn |
| 9 mph | 7.821 kn |
| 10 mph | 8.69 kn |
| 15 mph | 13.03 kn |
| 20 mph | 17.38 kn |
More speed conversions
FAQ
What is 52 knots in miles per hour?
52 knots = 59.84 miles per hour. Multiply the value in kn by 1.150779.
What is 1 mile per hour in knots?
1 mile per hour = 0.869 knots.
How do I convert knots to miles per hour in my head?
Use
kn × 1.15. For 52 kn that gives about 59.8 mph instead of 59.84 mph (0.068% too low).How strong is a 34-knot wind?
34 kn = 39.1 mph = 63 km/h, the lower limit of force 8 (gale) on the Beaufort scale.