Kilometre per Hour to Metre per Second

Free instant kilometre per hour to metre per second converter. 1 km/h = 0.277778 m/s.

0.277778
Formula
1 km/h = 0.277778 m/s

Common Kilometre per Hour to Metre per Second values

Kilometre per Hour (km/h)Metre per Second (m/s)
10.277778
51.38889
102.77778
256.94444
5013.8889
10027.7778
500138.889
1000277.778

How does Kilometre per Hour to Metre per Second conversion work?

Type a value in the Kilometre per Hour (km/h) field and the equivalent in Metre per Second (m/s) appears instantly to the right. The math uses the exact formula shown above — no rounding errors, no approximations beyond standard floating-point precision. Use the swap button to flip the units and see the inverse conversion.

Kilometre per Hour. The standard road-speed unit in most metric countries. 100 km/h is the typical highway speed.

Metre per Second. The SI unit of speed. Used in physics. 10 m/s is roughly Olympic-sprinter pace.

⚡ Instant results

No submit button — the result updates as you type. Math runs entirely in your browser, so it’s as fast as your device.

📱 Use on any device

Works in any modern browser — Mac, Windows, Linux, iPhone, Android, tablets. No installation, no signup.

🎯 Accurate conversions

Conversion factors come from the official standard (NIST, BIPM, ISO definitions where applicable). Values are precise to standard floating-point limits.

🎁 Always free, no signup

Free, every time. No account, no email, no “trial” that becomes paid. Ad-supported so you never have to pay.

Frequently asked

What is the formula for converting Kilometre per Hour to Metre per Second?+
The formula is: 1 km/h = 0.277778 m/s. Type any value into the calculator above and the result appears instantly.
How do I convert Metre per Second back to Kilometre per Hour?+
Click the swap button (⇄) above to go to the Metre per Second → Kilometre per Hour converter, or use the inverse formula derived from the one shown.

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