Metres per Second to Knots Converter
Convert metres per second to knots — one knot is 0.5144 m/s. Results update as you type; exact factors shown.
One metre per second is 1.9438 knots — see the exact factor, not a rounded rule of thumb.
How the metres per second to knots converter works
Speeds convert through metres per second. 1 km/h is 1000/3600 m/s; 1 mph is 1609.344/3600 m/s; a knot is one nautical mile (1,852 m) per hour. Mach is shown against the standard sea-level speed of sound of 340.29 m/s and varies with altitude and temperature.
The UK is metric for most trade and science but keeps miles, pints, stone and mpg (with the imperial gallon) in daily life.
Common speed conversions
| From | To | Units |
|---|---|---|
| 1 m/s | 1.9438 kn | metre per second to knots |
| 2 m/s | 3.8877 kn | metres per second to knots |
| 5 m/s | 9.7192 kn | metres per second to knots |
| 10 m/s | 19.4384 kn | metres per second to knots |
| 15 m/s | 29.1577 kn | metres per second to knots |
| 20 m/s | 38.8769 kn | metres per second to knots |
| 25 m/s | 48.5961 kn | metres per second to knots |
| 30 m/s | 58.3153 kn | metres per second to knots |
| 40 m/s | 77.7538 kn | metres per second to knots |
| 50 m/s | 97.1922 kn | metres per second to knots |
| 75 m/s | 145.7883 kn | metres per second to knots |
| 100 m/s | 194.3844 kn | metres per second to knots |
Units in this converter and their exact factors
| Unit | Symbol | One unit in metre per seconds |
|---|---|---|
| metre per second | m/s | 1 metre per second |
| kilometre per hour | km/h | 0.2777777778 metre per second |
| mile per hour | mph | 0.44704 metre per second |
| knot | kn | 0.5144444444 metre per second |
| foot per second | ft/s | 0.3048 metre per second |
| Mach (sea level, 15 °C) | Ma | 340.29 metre per second |
FAQFrequently asked questions about speed conversion
How many knots is 1 m/s?
1.944 knots.
What is a knot?
One nautical mile per hour — 1.852 km/h, or 0.5144 m/s.
Why do sailors use knots?
Because a nautical mile is one minute of latitude, so speed and chart position share a unit.
What is 10 m/s in knots?
19.44 knots.
Where does the name come from?
Knots tied at intervals in a line paid out behind a ship, counted against a sand glass.
Where these figures come from
- BIPM — The International System of Units (SI Brochure, 9th edition) — definitions of the base and derived units.
- NIST Special Publication 811 — Guide for the Use of the International System of Units — the exact conversion factors used here.
- National Physical Laboratory (NPL) — United Kingdom's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.