Meter per Second to km/h Converter
Convert metres per second to km/h and back. 1 m/s = 3.6 km/h exactly — the SI speed unit to the most common everyday speed unit.
Reviewed October 7, 2026 Runs in your browser — inputs are never stored
km/h
36.0000 km/h
mph
22.3694
knots
19.4384
This tool provides general unit conversions for everyday and educational use. For regulated, legal, or scientific applications, verify conversion factors against the applicable official standard.
About the Meter per Second to km/h Converter
The metre per second to km/h converter uses the exact factor 3.6: there are 3,600 seconds in an hour and 1,000 metres in a kilometre. Metres per second are the SI unit used in physics and wind measurements, while km/h is used on roads.
How to use it
- 1Choose m/s → km/h or km/h → m/s.
- 2Enter the speed.
- 3Read the converted value.
- 4Copy, share or print the result with the buttons below it.
Worked example
25 m/s × 3.6 = 90 km/h, and 120 km/h ÷ 3.6 ≈ 33.3 m/s.
How it works
Formula
km/h = m/s × 3.6
m/s = km/h ÷ 3.6
This exact factor comes from: 1 m/s × (3600 s/hr) ÷ (1000 m/km) = 3.6 km/h.
Common use cases
- Physics homework
- Reading wind speeds
- Sports speed measurements
Frequently asked questions
A:Speed of sound at sea level (20°C) ≈ 343 m/s = 1,234.8 km/h = 767 mph.
A:10 m/s = 36 km/h — roughly the pace of a fast cyclist or a moderate headwind.
Reviewed for accuracy · Last updated October 7, 2026
Conversion factors are based on internationally defined SI units and standard metric/imperial equivalence tables.
CalcWisee Editorial Team
Calculator development and formula review
CalcWisee is an independent site founded by Ayman. Every calculator is built from a published formula or official definition, tested against hand-worked examples before it goes live, and corrected promptly when a reader reports an issue to ayman@calcwisee.com.
Expertise: Financial mathematics, Health and fitness formulas, Applied mathematics, Unit conversion standards
References & sources
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