Speed Converter
km/h, mph, knots and m/s.
1 knot = 0.5144444444 m/s. Enter any value to convert knots (kn) to meters per second (m/s), or use the table below for common values.
m/s = kn × 0.5144444444
Example: 10 kn = 5.144444444 m/s. To convert the other way, use kn = m/s × 1.943844492.
Quick mental estimate: multiply by about 0.51.
| Knots (kn) | Meters per Second (m/s) |
|---|---|
| 1 kn | 0.5144444444 m/s |
| 5 kn | 2.572222222 m/s |
| 10 kn | 5.144444444 m/s |
| 20 kn | 10.28888889 m/s |
| 30 kn | 15.43333333 m/s |
| 40 kn | 20.57777778 m/s |
| 50 kn | 25.72222222 m/s |
| 60 kn | 30.86666667 m/s |
| 70 kn | 36.01111111 m/s |
| 80 kn | 41.15555556 m/s |
| 90 kn | 46.3 m/s |
| 100 kn | 51.44444444 m/s |
| 120 kn | 61.73333333 m/s |
| 150 kn | 77.16666667 m/s |
| 200 kn | 102.8888889 m/s |
| 300 kn | 154.3333333 m/s |
The knot is one nautical mile per hour (exactly 1.852 km/h), used in aviation, sailing and marine weather forecasts.
The meter per second is the SI unit of speed, used in physics, engineering and for wind speed in weather science.
Use the formula m/s = kn × 0.5144444444. For example, 10 kn = 5.144444444 m/s.
1 kn = 0.5144444444 m/s.
Use kn = m/s × 1.943844492. 1 m/s = 1.943844492 kn.