How to convert knots to kilometers per hour
- Take the value in knots.
- Use the formula kilometers per hour = knots × 1.852.
- For example, 1 kn is 1.85 km/h.
About knots and kilometers per hour
A knot is one nautical mile per hour, and a nautical mile is exactly 1,852 m, so 1 knot is exactly 1.852 km/h. Multiply knots by 1.852 to get km/h. For a quick estimate double the knots and take off 7%.
Sailors, pilots and marine forecasts give wind and boat speed in knots, while weather apps in most countries show km/h. The Beaufort wind scale is often given in knots too.
Examples
- 1 kn (one knot) is 1.85 km/h
- 11 kn (the start of a moderate breeze, Beaufort force 4) is 20.37 km/h
- 28 kn (the start of a near gale, Beaufort force 7) is 51.86 km/h
- 64 kn (hurricane force, Beaufort force 12) is 118.53 km/h
Knots to kilometers per hour chart
| Knots (kn) | Kilometers per hour (km/h) |
|---|---|
| 1 | 1.85 |
| 2 | 3.7 |
| 3 | 5.56 |
| 4 | 7.41 |
| 5 | 9.26 |
| 6 | 11.11 |
| 7 | 12.96 |
| 8 | 14.82 |
| 10 | 18.52 |
| 11 | 20.37 |
| 12 | 22.22 |
| 15 | 27.78 |
| 17 | 31.48 |
| 20 | 37.04 |
| Knots (kn) | Kilometers per hour (km/h) |
|---|---|
| 22 | 40.74 |
| 25 | 46.3 |
| 28 | 51.86 |
| 30 | 55.56 |
| 34 | 62.97 |
| 40 | 74.08 |
| 50 | 92.6 |
| 64 | 118.53 |
| 100 | 185.2 |
| 150 | 277.8 |
| 200 | 370.4 |
| 250 | 463 |
| 300 | 555.6 |
| 500 | 926 |