Knots to metres per second – convert kt to m/s
Convert knots to metres per second (kt to m/s) to turn marine and aviation speeds into SI units. Useful for navigation, flight planning, weather charts and physics problems.
Open the interactive kt → m/s converter:
Use main converter (kt → m/s) or switch to m/s → ktThe speed converter also supports km/h, mph, feet per second and nautical miles per hour for quick comparisons.
Quick reference: knots to m/s
One knot is about 0.51444 m/s. That means: m/s = knots × 0.51444. Examples:
| Speed (knots) | Speed (m/s, approx.) |
|---|---|
| 1 kt | 0.51 m/s |
| 5 kt | 2.57 m/s |
| 10 kt | 5.14 m/s |
| 15 kt | 7.72 m/s |
| 20 kt | 10.29 m/s |
| 30 kt | 15.43 m/s |
| 40 kt | 20.58 m/s |
Why convert knots to metres per second?
Knots to m/s is helpful when you:
- Compare ship or aircraft speeds with SI-based calculations.
- Convert wind speeds from marine forecasts into physics-friendly units.
- Combine nautical data with other SI-based measurements (force, power, etc.).
- Teach how nautical miles per hour relate to metres per second.
Other speed converters on this site
All speed conversions on the homepage share the same nautical mile definition, so knots, km/h, mph and m/s remain consistent.
Page last updated: 4 December 2025.