Convert Knots (kn) to Kilometers per Hour (km/h)
Knots (kn) to kilometres per hour (km/h) is the speed conversion used in sailing, aviation and weather, where speed is measured in nautical miles per hour.
Formula
1 kn = 1.851997 km/h
To convert kn to km/h, multiply the value by 1.851997.
Conversion Table
| Knots (kn) | Kilometers per Hour (km/h) |
|---|---|
| 0.01 kn | 0.0185 km/h |
| 0.1 kn | 0.1852 km/h |
| 0.5 kn | 0.926 km/h |
| 1 kn | 1.852 km/h |
| 2 kn | 3.704 km/h |
| 3 kn | 5.556 km/h |
| 5 kn | 9.26 km/h |
| 10 kn | 18.52 km/h |
| 15 kn | 27.78 km/h |
| 20 kn | 37.0399 km/h |
| 25 kn | 46.2999 km/h |
| 50 kn | 92.5998 km/h |
| 100 kn | 185.1997 km/h |
| 250 kn | 462.9992 km/h |
| 500 kn | 925.9985 km/h |
| 1000 kn | 1851.9969 km/h |
| 2500 kn | 4629.9923 km/h |
| 5000 kn | 9259.9846 km/h |
| 10000 kn | 18519.9692 km/h |
| 50000 kn | 92599.8459 km/h |
Common kn to km/h Examples
- 1 kn = 1.852 km/h
- 5 kn = 9.26 km/h
- 10 kn = 18.52 km/h
- 25 kn = 46.2999 km/h
- 50 kn = 92.5998 km/h
- 100 kn = 185.1997 km/h
- 500 kn = 925.9985 km/h
- 1000 kn = 1851.9969 km/h
About kn to km/h
One knot is one nautical mile per hour, and the exact factor is 1 knot = 1.852 km/h. So 10 knots is 18.52 km/h and 20 knots about 37 km/h. A rough estimate is to multiply knots by 1.85.
Reference points: a cruising sailboat does about 6–8 knots (11–15 km/h), a commercial jet cruises near 470 knots (about 870 km/h), and a gale on the Beaufort scale starts around 34 knots (63 km/h).
About the units
Knots (kn) — The knot (one nautical mile per hour) is the speed unit of ships and aircraft — named for the knotted log-line sailors paid out to measure speed.
Frequently Asked Questions
What is a knot in km/h?
1 knot equals 1.852 km/h, since a knot is one nautical mile per hour.
How fast is 20 knots in km/h?
About 37 km/h (20 × 1.852).
Where does the unit km/h come from?
Kilometers per Hour is a Speed unit with its own historical and regional roots, now defined in relation to internationally agreed reference standards.
Where does the unit kn come from?
The knot (one nautical mile per hour) is the speed unit of ships and aircraft — named for the knotted log-line sailors paid out to measure speed.
Is there a shortcut for converting kn to km/h?
The shortest route is the formula itself: 1 kn = 1.851997 km/h. Memorizing this single line covers every case.
What is the formula to convert kn to km/h?
The formula is 1 kn = 1.851997 km/h. To convert any value, multiply the value by 1.851997.
Can I convert large numbers of kn to km/h at once?
Yes. The same ratio 1.851997 applies to any value, whether it is a fraction or millions of kn.
How much is 1 kn in km/h?
1 kn equals 1.851997 km/h. This ratio applies to every conversion between the two units.