How to convert knots to kilometers per hour
One knot equals 1.852 kilometers per hour. To convert, multiply the number of knots by 1.852:
Mental-math shortcut: Multiply knots by 1.852 — or roughly double and subtract 7%: 20 kn ≈ 37 km/h.
Example
Convert 20 knots to kilometers per hour: 20 kn × 1.852 = 37.04 km/h.
Knots to km/h conversion chart
| Knots (kn) | km/h (km/h) |
|---|---|
| 1 | 1.852 |
| 5 | 9.26 |
| 10 | 18.52 |
| 15 | 27.78 |
| 20 | 37.04 |
| 25 | 46.3 |
| 30 | 55.56 |
| 40 | 74.08 |
| 50 | 92.6 |
| 100 | 185.2 |
| 250 | 463 |
| 500 | 926 |
What is a knot?
A knot (kn or kt) is one nautical mile per hour — exactly 1.852 km/h, or about 1.151 mph. Knots are the standard speed unit at sea and in aviation, and for wind speed in marine and aviation weather forecasts. A nautical mile is based on one minute of latitude.
What is a kilometer per hour?
Kilometers per hour (km/h) is the standard unit for speed limits and speedometers in most countries. 100 km/h is about 62 mph, a common highway limit in Europe and Australia.
Frequently asked questions
How many kilometers per hour is one knot?
One knot is 1.852 kilometers per hour.
How do I convert knots to kilometers per hour?
Multiply the value in knots by 1.852. For example, 20 kn × 1.852 = 37.04 km/h.
What is 10 kn in kilometers per hour?
10 kn is 18.52 kilometers per hour.
How do I convert kilometers per hour to knots?
Multiply kilometers per hour by 0.539957 (or divide by 1.852).
Conversions use the internationally agreed definitions of each unit (for example, 1 inch = 2.54 cm exactly) and are rounded for display. Volume converters use US customary units unless stated otherwise.
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