Convert Knots to Miles per Hour
Convert Knots (kn) to Miles per Hour (mph) instantly and accurately.
Conversion Formula
mph = kn × 1.150779448
About Knots
A knot (kn) = 1 nautical mile per hour = 1,852/3,600 m/s ≈ 0.51444 m/s - the universal speed unit for aviation and maritime navigation (ICAO and IMO standard). GA aircraft cruise 100-140 kn; commercial airliners 450-480 kn; Concorde 1,176 kn (Mach 2). Container ships 18-22 kn; QM2 exceeds 30 kn. Beaufort Force 12 hurricane begins at 64 kn. Gulf Stream surface current 2-4 kn. 1 kn = 1.852 km/h = 1.15078 mph.
About Miles per Hour
A mile per hour (mph) = exactly 0.44704 m/s - the primary road speed unit in the US, UK, and a few other countries. US interstate limits 65-85 mph; UK motorway 70 mph. Walking ~3-4 mph; club cycling 20-25 mph. MLB elite fastball 100 mph (44.7 m/s). Saffir-Simpson Category 5 hurricane ≥157 mph. Boeing 737 MAX cruises at ~521 mph (Mach 0.79). 1 mph = 0.44704 m/s = 1.60934 km/h = 0.86898 kn.
Quick Reference Table
| Knots (kn) | Miles per Hour (mph) |
|---|---|
| 1 kn | 1.15078 mph |
| 2 kn | 2.30156 mph |
| 5 kn | 5.7539 mph |
| 10 kn | 11.5078 mph |
| 25 kn | 28.7695 mph |
| 50 kn | 57.539 mph |
| 100 kn | 115.078 mph |