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Kilometers Per Hour to Meters Per Second Converter

Instant, two-way conversion across common engineering units.

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1 km/h = 0.27777778 m/s(Kilometres per hour → Metres per second)

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Converting kilometers per hour to meters per second

To convert kilometers per hour to meters per second, multiply the value by 0.27777778. Speed conversions appear in wind loading, air velocity in ducts and transport analysis, where codes mix metric and imperial units.

Kilometers Per Hour (km/h)

Kilometers per hour (km/h) is the everyday metric speed unit.

Origin
A practical multiple of the SI meter per second.
Where it is used
Used for vehicle speed, transport planning and weather reporting.
Relation to SI
1 km/h = 0.2778 m/s, so 3.6 km/h equals 1 m/s.

Meters Per Second (m/s)

Meters per second (m/s) is the SI derived unit of speed.

Origin
Defined directly from the SI meter and second.
Where it is used
Used for wind speed in structural codes, air velocity in ducts and lift travel speed.
Relation to SI
The SI reference unit for speed in this converter.

Frequently asked questions

How many meters per second are in one kilometer per hour?

1 km/h equals 0.27777778 m/s.

How do I convert kilometers per hour to meters per second?

Multiply the value by 0.27777778. For example, 10 km/h equals 2.7777778 m/s.

How do I convert back from meters per second to kilometers per hour?

1 m/s equals 3.6 km/h. The converter above works in both directions, so you can type into either field.

Which speed unit do wind load codes use?

Eurocode and most metric standards state basic wind speed in meters per second, while US standards such as ASCE 7 use miles per hour. Check the averaging period as well as the unit.

What is a knot?

One knot is one nautical mile per hour, about 0.514 m/s. It is standard in marine works, aviation and meteorological data.

Is this speed converter free to use?

Yes. Every unit conversion runs in your browser, needs no account and is free for professional use.

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