Convert kilometres per hour to knots
Enter a value in kilometres per hour (km/h) to get knots (kn). One kilometre per hour is 0.539957 knots; one knot is 1.852 kilometres per hour.
How to use the Kilometre per hour to knot
- Type the number of kilometres per hour.
- Click Convert.
- Read the result in knots, plus the same value in every other speed unit.
km/h to kn formula
knots = kilometres per hour × 0.539957. To go the other way, kilometres per hour = knots × 1.852 (see knots to kilometres per hour).
Worked example
12 km/h × 0.539957 = 6.4795 kn.
Kilometres per hour to knots conversion table
| Kilometres per hour | Knots |
|---|---|
| 0.1 km/h | 0.053996 kn |
| 0.5 km/h | 0.269978 kn |
| 1 km/h | 0.539957 kn |
| 2 km/h | 1.0799 kn |
| 3 km/h | 1.6199 kn |
| 5 km/h | 2.6998 kn |
| 10 km/h | 5.3996 kn |
| 20 km/h | 10.7991 kn |
| 25 km/h | 13.4989 kn |
| 50 km/h | 26.9978 kn |
| 100 km/h | 53.9957 kn |
| 250 km/h | 134.9892 kn |
| 500 km/h | 269.9784 kn |
| 1,000 km/h | 539.9568 kn |
About the kilometre per hour
Road speed limits in most countries.
About the knot
One nautical mile per hour, about 1.852 km/h. Ships, aircraft and wind at sea.
Related conversions
knots to kilometres per hour · kilometres per hour to metres per second · kilometres per hour to miles per hour · any unit.
Frequently asked questions
How many knots in a kilometre per hour?
0.539957 knots.
How many kilometres per hour in a knot?
1.852 kilometres per hour.
Is the factor exact?
The factor 0.539957 is derived from the units' exact definitions; only the display is rounded.
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Last updated 2026-09-23.