UnitSnapKilometers per Hour to Knots
1 km/h = 0.5399568 kn
Kilometers per hour to knots is used when land-based speeds must be expressed in marine or aviation terms. Weather services, drone operators, and sailors checking a metric wind forecast often need knots, because charts, aviation rules, and nautical instruments use them.
When you need to convert kilometers per hour to knots
- Converting a metric wind forecast for sailing or flying
- Entering drone or light aircraft speeds into aviation planning tools
- Comparing a vessel speed from a metric brochure with nautical charts
- Translating storm wind speeds into marine forecast units
How to convert kilometers per hour to knots
kn = km/h × 0.5399568
Equivalently: kn = km/h ÷ 1.852.
Example: 5 km/h = 2.699784 kn
Common speeds
| Kilometers per Hour (km/h) | Knots (kn) |
|---|---|
| 10 km/h | 5.399568 kn |
| 20 km/h | 10.79914 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 |
| 100 km/h | 53.99568 kn |
| 120 km/h | 64.79482 kn |
| 250 km/h | 134.9892 kn |
| 900 km/h | 485.9611 kn |
Tips for converting kilometers per hour to knots
- Divide by exactly 1.852, or multiply by about 0.54. Halving and then adding 8% gives the same 0.54 factor.
- Simply halving km/h is a quick rough guess that reads about 7% low.
- Do not confuse knots with mph; a knot is about 15% faster than one mile per hour.
Kilometers per Hour to Knots conversion table
| Kilometers per Hour (km/h) | Knots (kn) |
|---|---|
| 1 km/h | 0.5399568 kn |
| 2 km/h | 1.079914 kn |
| 3 km/h | 1.61987 kn |
| 4 km/h | 2.159827 kn |
| 5 km/h | 2.699784 kn |
| 6 km/h | 3.239741 kn |
| 7 km/h | 3.779698 kn |
| 8 km/h | 4.319654 kn |
| 9 km/h | 4.859611 kn |
| 10 km/h | 5.399568 kn |
| 15 km/h | 8.099352 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 |
| 75 km/h | 40.49676 kn |
| 100 km/h | 53.99568 kn |
| 250 km/h | 134.9892 kn |
| 500 km/h | 269.9784 kn |
| 1,000 km/h | 539.9568 kn |
About the units
Kilometers per Hour: Kilometers per hour is the unit for road speed limits and vehicle speedometers in most countries.
Knots: The knot is one nautical mile (1,852 m) per hour, used in aviation, shipping and meteorology.
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Frequently asked questions
How many knots are in 1 kilometer per hour?
1 kilometer per hour equals 0.5399568 knots.
How many kilometers per hour are in 1 knot?
1 knot equals 1.852 kilometers per hour.
How do I convert kilometers per hour to knots?
Use the formula kn = km/h × 0.5399568. Equivalently, kn = km/h ÷ 1.852.
What is 10 kilometers per hour in knots?
10 kilometers per hour equals 5.399568 knots.
Related conversions
- Knots to Kilometers per Hour
- Kilometers per Hour to Miles per Hour
- Miles per Hour to Kilometers per Hour
- Meters per Second to Kilometers per Hour
- Kilometers per Hour to Meters per Second
- Meters per Second to Miles per Hour
- Miles per Hour to Meters per Second
- Knots to Miles per Hour
- Miles per Hour to Knots
- Feet per Second to Meters per Second
- Meters per Second to Feet per Second
- Mach (at 20 °C) to Kilometers per Hour
- Kilometers per Hour to Mach (at 20 °C)
- All speed units
Factors: NIST SP 811 · SI Brochure · NIST Handbook 44 — Updated