Convert Kilometers per hour to Knots
One kilometer per hour equals 0.539957 knots. Type any value to convert kilometers per hour to knots instantly — with a full reference table below.
Convert Kilometers per hour to Knots
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How to convert Kilometers per hour to Knots
To convert kilometers per hour to knots, multiply by 0.539957. One kilometer per hour equals 0.539957 kn, and one knot equals 1.852 km/h.
- Take the value in kilometers per hour — for example 7.5 km/h.
- Multiply by 0.539957 (the number of knots in one kilometer per hour).
- 7.5 × 0.539957 = 4.049676 kn.
Quick mental estimate: Multiply the number of kilometers per hour by 0.54 (accurate to better than 0.05%).
Kilometers per hour to Knots conversion table
| Kilometers per hour | Knots |
|---|---|
| 1 km/h | 0.539957 kn |
| 5 km/h | 2.699784 kn |
| 10 km/h | 5.399568 kn |
| 20 km/h | 10.79914 kn |
| 25 km/h | 13.49892 kn |
| 30 km/h | 16.1987 kn |
| 40 km/h | 21.59827 kn |
| 50 km/h | 26.99784 kn |
| 60 km/h | 32.39741 kn |
| 70 km/h | 37.79698 kn |
| 80 km/h | 43.19654 kn |
| 100 km/h | 53.99568 kn |
| 120 km/h | 64.79482 kn |
| Knots | Kilometers per hour |
|---|---|
| 1 kn | 1.852 km/h |
| 5 kn | 9.26 km/h |
| 10 kn | 18.52 km/h |
| 20 kn | 37.04 km/h |
| 25 kn | 46.3 km/h |
| 30 kn | 55.56 km/h |
| 40 kn | 74.08 km/h |
| 50 kn | 92.6 km/h |
| 60 kn | 111.12 km/h |
| 70 kn | 129.64 km/h |
| 80 kn | 148.16 km/h |
| 100 kn | 185.2 km/h |
| 120 kn | 222.24 km/h |
About converting Kilometers per hour to Knots
Kilometers per hour (km/h) and Knots (kn) are both units of speed. The exact factor is 1 km/h = 0.539957 kn, so multiply by 0.539957 to go from kilometers per hour to knots (or divide to go back).
The conversion runs entirely in your browser. Need the reverse? Use the Knots to Kilometers per hour converter, or the full unit converter for every unit at once.
Real-world speed in kilometers per hour and knots
| Example | Kilometers per hour | Knots |
|---|---|---|
| A walking pace | ≈ 5.04 km/h | ≈ 2.721382 kn |
| Usain Bolt's top speed (2009) | ≈ 44.712 km/h | ≈ 24.14255 kn |
| The UK motorway limit (70 mph) | 112.6541 km/h | 60.82834 kn |
| The German Autobahn advisory speed (130 km/h) | 130 km/h | 70.19436 kn |
| The speed of sound (air, 20 °C) | ≈ 1,234.8 km/h | ≈ 666.7387 kn |
| An airliner at cruise | ≈ 900 km/h | ≈ 485.9611 kn |
“≈” marks typical values; the rest are defined or measured figures.
The units
Kilometres per hour — exactly 1/3.6 m/s.
Used for: Road speeds in most countries.
One nautical mile (1,852 m) per hour, about 0.5144 m/s.
Used for: Aviation, shipping and marine weather.
km/h, mph, ft/s and knots are all defined exactly in metres per second (a knot is one nautical mile, exactly 1,852 m, per hour).