⚡ Speed
km/h to m/s Converter
Convert km/h to m/s instantly with a reference table.
Quick answer: To convert km/h to m/s, multiply by 0.277778. For example, 1 km/h = 0.277778 m/s. Use the calculator below for any value.
km/h to m/s
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Common conversions
| km/h | m/s |
|---|
Formula:
How to convert km/h to m/s
1
Enter your value
Type the number of km/h you want to convert into the left box. The result in m/s appears instantly in the right box. You can also type into the right box to convert in the other direction.
2
Use the swap button
Click the ⇄ Swap button to reverse the conversion — m/s to km/h. Your current value carries across so you don't have to re-enter anything.
3
About km/h and m/s
km/h and m/s are both speed measurements.
💡 Did you know?
1 m/s = 3.6 kph. Rain falls at 5-9 m/s = 18-32 kph. Terminal velocity of a skydiver (belly-down): ~55 m/s = 198 kph. Speed of sound at sea level: 343 m/s = 1,234.8 kph = Mach 1.
📊 Common conversions at a glance
| km/h | m/s |
|---|---|
| 1 | 0.2778 |
| 5 | 1.389 |
| 10 | 2.778 |
| 20 | 5.556 |
| 30 | 8.333 |
| 50 | 13.89 |
Reviewed for 2026. km/h ↔ m/s conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.