All converters / Speed
Knots to km/h
Convert marine and aviation speeds. A knot is one nautical mile per hour.
↗ Speed Instant conversion
Edit either value. Use a decimal point; commas group thousands. Rounding affects display only.
How to convert knots to kilometers per hour
Convert marine and aviation speeds. A knot is one nautical mile per hour.
km/h = kn × 1.852
Formula coefficients shown rounded. Calculations use the stored factors before display rounding.
A worked example
For 10 kn, the result is approximately 18.52 km/h. To go the other way, edit the result above or swap the units.
Know your units
Speed measures distance per time. Knots are nautical miles per hour.
Where the numbers come from
Factors follow NIST conversion references and documented unit definitions. Read our accuracy and rounding notes.
The table and method describe this page’s original pair. Changing units above does not change this reference section.
| Knots (kn) | Kilometers per hour (km/h) |
|---|---|
| 1 | 1.852 |
| 2 | 3.704 |
| 5 | 9.26 |
| 10 | 18.52 |
| 20 | 37.04 |
| 25 | 46.3 |
| 50 | 92.6 |
| 100 | 185.2 |
| 500 | 926 |
| 1000 | 1852 |