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.
Australia is fully metric under the National Measurement Act 1960; imperial units appear only in trade with the US and in older documents.
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 Measurement Institute (NMI) — Australia's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.