Km/h to knots
One km/h equals 0.5399568035 kn. Type any number and the answer appears as you type — the maths happens in your browser.
Result
The same value in every unit
| Unit | Value |
|---|
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Common values
| km/h | knots |
|---|---|
| 1 km/h | 0.5399568 kn |
| 2 km/h | 1.0799136 kn |
| 3 km/h | 1.6198704 kn |
| 5 km/h | 2.699784 kn |
| 10 km/h | 5.399568 kn |
| 15 km/h | 8.0993521 kn |
| 20 km/h | 10.799136 kn |
| 25 km/h | 13.49892 kn |
| 50 km/h | 26.99784 kn |
| 100 km/h | 53.99568 kn |
| 500 km/h | 269.9784 kn |
| 1000 km/h | 539.9568 kn |
How to use
- Enter the number of km/h in the field.
- The result in knots updates on every keystroke.
- Use the table below for the values people look up most often.
Formula and reverse conversion
The formula
To convert by hand: kn = km/h ÷ 1.852. Going back the other way, one kn is 1.852 km/h.
Where the odd number comes from
The factor is not a round number because the imperial units are defined through the metric ones by international agreement: an inch is exactly 25.4 mm and a pound is exactly 0.45359237 kg. Everything else follows from those definitions.
kn = km/h ÷ 1.852
Frequently asked questions
How many knots are in one km/h?
One km/h is 0.5399568035 kn.
How do I convert km/h to knots?
Multiply by the factor: kn = km/h ÷ 1.852.
Is the result exact?
The factors are the exact legal definitions, and up to ten significant digits are kept in the answer. Rounding happens only in the display.
How do I convert knots back to km/h?
One kn is 1.852 km/h — or open the reverse page linked below.