Knots ↔ MPH ↔ KPH Converter
Convert between the three most common speed units in aviation. Knots are the standard unit for airspeed and wind speed in aviation worldwide.
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Formula
1 knot = 1.15078 mph = 1.852 km/h
One knot equals one nautical mile per hour. Multiply knots by 1.15078 to get mph, or by 1.852 to get km/h.
Reference Table
| Knots | MPH | KM/H | Context |
|---|---|---|---|
| 60 | 69 | 111 | Typical pattern speed (C172) |
| 100 | 115 | 185 | Cruise speed (training aircraft) |
| 120 | 138 | 222 | Cruise speed (complex single) |
| 150 | 173 | 278 | Fast cruise / retractable |
| 250 | 288 | 463 | Max speed below 10,000 ft (FAR 91.117) |
Aviation Context
In US aviation, airspeed indicators read in knots, wind reports use knots, and ATC communicates speeds in knots. However, visibility is in statute miles, and car-rental speed limits are in mph. Understanding the conversion helps pilots transition between aviation and ground operations.
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