What is the formula to convert Kilometers per hour (km/h) to Meters per second (m/s)?

This is a linear unit conversion using a constant factor between units.

How can I share a direct kmh to ms result?

Use the shareable URL: https://measurecalc.com/convert/kilometer-per-hour-to-meter-per-second

Convert Kilometers per hour (km/h) to Meters per second (m/s)

Q: Is Kilometers per hour (km/h) to Meters per second (m/s) conversion exact?

Yes, it uses exact definitions or standardized constants (e.g., 1 in = 25.4 mm).

Category: Speed

Value From To Precision

0.277778 ms

1 kmh = 0.277778 ms

High-precision rounding: 6 decimals

How to convert kilometers per hour (km/h) to meters per second (m/s)

Speed combines distance and time. Science favors m/s, drivers see km/h or mph, and navigation uses knots (nautical miles per hour). Context determines the most convenient representation and rounding.

This converter calculates Kilometers per hour (km/h) to Meters per second (m/s) values by using the correct conversion rule for the Speed category. For linear units, standardized factors are used. For temperature, the calculator applies the proper formula with offsets.

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Quick conversion table

Handy values for Kilometers per hour (km/h) to Meters per second (m/s). Click a value to open that exact result.

Kilometers per hour (km/h)	Meters per second (m/s)
1	0.277778
0.5	0.138889
2.5	0.694444
10	2.777778

Conversion formula

Linear unit conversions use standardized factors; many are exact by definition (e.g., 1 in = 25.4 mm, 1 ft = 0.3048 m).

Common mistakes

Mixing mph with knots in navigation; 1 kn = 1 nmi/h.

Unit facts

Kilometers per hour (km/h): Kilometers per hour is the common road-speed unit in most of the world.
Meters per second (m/s): Meters per second (m/s) is the SI unit of speed; used in physics and engineering.

About Kilometers per hour (km/h)

Kilometers per hour (km/h)

Road and vehicle speed standard in most of the world. Convert from m/s by multiplying by 3.6.

History: Adopted with metric traffic systems and signage during 20th-century metrication.

About Meters per second (m/s)

Meters per second (m/s)

SI speed unit, natural in physics equations and simulations. Converts straightforwardly to km/h (×3.6).

History: Rooted in SI coherence; often used in technical specs and safety calculations.

Frequently asked questions

How many Meters per second (m/s) are in one Kilometers per hour (km/h)?

1 Kilometers per hour (km/h) equals 0.277778 Meters per second (m/s).

Is Kilometers per hour (km/h) to Meters per second (m/s) conversion exact?

Many unit conversions are exact by definition, while others use standardized conversion constants.

What is the fastest way to convert Kilometers per hour (km/h) to Meters per second (m/s)?

Enter a value in Kilometers per hour (km/h), choose Meters per second (m/s) as the target unit, and the calculator will instantly return the result.

Convert Kilometers per hour (km/h) to other units

kmh → knot Knot (kn)
kmh → mach Mach (sea-level approx.)
kmh → mph Miles per hour (mph)

Convert other units to Meters per second (m/s)

knot → ms Knot (kn)
mach → ms Mach (sea-level approx.)
mph → ms Miles per hour (mph)