Metres per second to Kilometres per hour Converter

How to convert m/s to km/h

To convert metres per second to kilometres per hour, multiply by 3.6. For example, 5 m/s × 3.6 = 18 km/h.

Metres per second to Kilometres per hour at a glance

• 1 metre per second = 3.6 kilometres per hour
• 5 metres per second = 18 kilometres per hour
• 10 metres per second = 36 kilometres per hour
• 50 metres per second = 180 kilometres per hour
• 100 metres per second = 360 kilometres per hour
• 1 kilometre per hour = 0.2777778 metres per second (the reverse)

Worked examples

25 metres per second × 3.6 = 90 kilometres per hour.

250 metres per second × 3.6 = 900 kilometres per hour.

1,500 metres per second × 3.6 = 5,400 kilometres per hour.

Converting back

To go from kilometres per hour back to metres per second, divide by 3.6 (or multiply by 0.2777778). For example, 100 kilometres per hour ÷ 3.6 = 27.77778 metres per second.

Using a rounded factor

For a quick estimate you can use 3.6 in place of 3.6. That is accurate to within about less than 0.1%, which is fine for rough checks but not for exact work.

M/s to km/h chart

More speed conversions

Frequently asked questions