Knots to KMH Converter
Convert knots to kilometers per hour instantly. One knot equals exactly 1.852 kilometers per hour. Type in either box to convert both ways, then use the chart, worked examples and everyday sizes below.
How to convert knots to kilometers per hour
Worked example: convert 120 knots to kilometers per hour. Using kilometers per hour ← knots × 1.852, we get 120 × 1.852 = 222.24 km/h. To check the result, convert back: 222.24 km/h ÷ 1.852 = 120 kn.
Knots to kilometers per hour chart
| Knots (kn) | Kilometers per hour (km/h) |
|---|---|
| 1 kn | 1.852 km/h |
| 2 kn | 3.704 km/h |
| 3 kn | 5.556 km/h |
| 4 kn | 7.408 km/h |
| 5 kn | 9.26 km/h |
| 6 kn | 11.112 km/h |
| 8 kn | 14.816 km/h |
| 10 kn | 18.52 km/h |
| 12 kn | 22.224 km/h |
| 15 kn | 27.78 km/h |
| 20 kn | 37.04 km/h |
| 25 kn | 46.3 km/h |
| 30 kn | 55.56 km/h |
| 40 kn | 74.08 km/h |
| 50 kn | 92.6 km/h |
| 75 kn | 138.9 km/h |
| 100 kn | 185.2 km/h |
| 150 kn | 277.8 km/h |
| 200 kn | 370.4 km/h |
| 250 kn | 463 km/h |
| 500 kn | 926 km/h |
| 1,000 kn | 1,852 km/h |
Kilometers per hour to knots (reverse)
| Kilometers per hour (km/h) | Knots (kn) |
|---|---|
| 1 km/h | 0.5399568 kn |
| 2 km/h | 1.079914 kn |
| 5 km/h | 2.699784 kn |
| 10 km/h | 5.399568 kn |
| 20 km/h | 10.79914 kn |
| 50 km/h | 26.99784 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 knot and the kilometer per hour
A knot is one nautical mile per hour. Ships, aircraft and weather services use knots for speed and wind speed.
Kilometers per hour is the speed unit on road signs in most countries. A speed of 100 km/h is about 62 mph and 27.8 m/s.
One knot equals 1.852 kilometers per hour, which makes the knot the faster unit of the two.
Everyday sizes in knots and kilometers per hour
| Everyday example (approximate) | In knots | In kilometers per hour |
|---|---|---|
| A slow walk | 2.7214 kn | 5.04 km/h |
| A jogger | 5.8315 kn | 10.8 km/h |
| A city cyclist | 10.691 kn | 19.8 km/h |
| Usain Bolt's peak sprint speed | 24.104 kn | 44.64 km/h |
| A car on a city road | 27 kn | 50.004 km/h |
| A car on a highway | 54 kn | 100.01 km/h |
Knots to kilometers per hour FAQ
How many kilometers per hour are in one knot?
One knot equals exactly 1.852 kilometers per hour. In the other direction, one kilometer per hour equals 0.5399568 knots.
How do I convert knots to kilometers per hour without a calculator?
convert 120 knots to kilometers per hour. Using kilometers per hour ← knots × 1.852, we get 120 × 1.852 = 222.24 km/h. To check the result, convert back: 222.24 km/h ÷ 1.852 = 120 kn. For a quick estimate, round the factor to 1.9. Then 120 kn is about 228 km/h, compared with the exact 222.24 km/h (an error of 2.6%). That is close enough for planning, but use the calculator above when the number matters.
What is a car on a highway in kilometers per hour?
A car on a highway is about 54 knots, which is 100.01 kilometers per hour. Treat that as an approximate everyday figure rather than an official measurement.
Are the knots and kilometers per hour the same in every country?
One knot is exactly 1.852 km/h (1 nautical mile per hour). One kilometer per hour is exactly 5/18 m/s.