M/S to KM/H converter

How to convert meters per second to kilometers per hour

To convert meters per second to kilometers per hour, use km/h = m/s × 3.6. For example, 30 m/s is 108 km/h. Type any value in the converter above and the result updates instantly.

The M/S to KM/H formula

The conversion is km/h = m/s × 3.6. One meter per second equals 3.6 km/h. This conversion is exact: meter per second is defined precisely in terms of kilometer per hour, so the only rounding is in the digits shown.

M/S to KM/H conversion table

Where meters per second and kilometers per hour are used

Meters per second is the SI unit of speed, used in physics, sport science and weather reports.

Kilometers per hour is the speed unit on road signs and vehicle instruments in most of the world.

Worked examples

These examples use the formula above, so you can check the converter or do the same by hand:

• 2 m/s = 7.2 km/h
• 10 m/s = 36 km/h
• 20 m/s = 72 km/h

Converting meters per second to kilometers per hour in your head

As a quick estimate, multiply by 3.6 (rounded).

KM/H to M/S reference table

For the opposite direction, these values are handy to have at hand:

Common mistakes to avoid

• Speed limits, aviation and sailing use different units: knots are used at sea and in the air, not on roads.
• Rounded rules of thumb are fine for driving estimates but not for precise engineering calculations.

About this converter

The converter accepts whole numbers, decimals and negative values, gives the result as you type, and uses full precision internally, so what you copy is as accurate as it can be. It runs in your browser: nothing you type is sent to a server, it keeps working offline once the page has loaded, and there is nothing to install.

Need the opposite direction? Use the KM/H to M/S converter.