Knot to Meter/Second (kn to m/s)
Result
0.5144444444 Meter/Second
Formula
m/s = kn × 0.5144444444
1 kn = 0.5144444444 m/s, and 1 m/s = 1.943844492 kn.
Speed units are a length divided by a time: 1 km/h = 1/3.6 m/s, 1 mph = 0.44704 m/s exactly, and 1 knot = 1 nautical mile per hour = 1,852/3,600 m/s.
Worked examples
- 1 kn × 0.5144444444 = 0.51444444 m/s
- 10 kn × 0.5144444444 = 5.1444444 m/s
- 100 kn × 0.5144444444 = 51.444444 m/s
Common mistakes
- A knot is a nautical mile per hour, so 1 kn = 1.852 km/h and 1.15078 mph — not 1 mph.
- Weather services quote wind in km/h, m/s, mph or knots depending on country; check the unit before comparing forecasts.
Knot to Meter/Second table
| Knot (kn) | Meter/Second (m/s) |
|---|---|
| 1 | 0.51444444 |
| 2 | 1.0288889 |
| 5 | 2.5722222 |
| 10 | 5.1444444 |
| 20 | 10.288889 |
| 50 | 25.722222 |
| 100 | 51.444444 |
| 1,000 | 514.44444 |
The units
- Knot (kn)
- Knot: one nautical mile (1,852 m) per hour, used in aviation and shipping.
- Meter/Second (m/s)
- A unit of speed.
Sources for these factors
- Guide for the Use of the International System of Units (SP 811), Appendix B: conversion factors — NIST
- Handbook 44 (2024), Appendix C: General Tables of Units of Measurement — NIST
Last reviewed against these sources. An automated check recomputes every factor from its definition on each build. How we check accuracy