Convert kilometers per hour to meters per second
Converting kilometers per hour to meters per second is a common speed task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 km/h equals 0.277778 m/s, the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert kilometers per hour to meters per second
To convert kilometers per hour to meters per second, multiply the number of kilometers per hour by 0.277778. For example, 10 km/h × 0.277778 = 2.77778 m/s.
m/s = km/h × 0.277778
- Write down the value in kilometers per hour you want to convert.
- Multiply it by 0.277778 (the exact km/h→m/s factor).
- The result is your value in meters per second. Check it below with the converter or the table.
Conversion table
Common values of kilometers per hour and their equivalents in meters per second:
| km/h | m/s |
|---|---|
| 1 | 0.277778 |
| 2 | 0.555556 |
| 3 | 0.833333 |
| 4 | 1.11111 |
| 5 | 1.38889 |
| 10 | 2.77778 |
| 20 | 5.55556 |
| 25 | 6.94444 |
| 50 | 13.8889 |
| 100 | 27.7778 |
| 250 | 69.4444 |
| 500 | 138.889 |
About these units
Kilometer per Hour (km/h). Kilometers per hour is the standard speed unit for road traffic in metric countries, expressing how many kilometers are covered in one hour. Speed limits and car speedometers use km/h.
Meter per Second (m/s). Meters per second is the SI derived unit of speed, used in physics and engineering. Wind speeds in meteorology and velocity in science are typically quoted in m/s.
Frequently asked questions
How do I convert kilometers per hour to meters per second?
To convert kilometers per hour to meters per second, multiply the number of kilometers per hour by 0.277778. For example, 10 km/h × 0.277778 = 2.77778 m/s. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many meters per second are in 1 kilometer per hour?
1 km/h = 0.277778 m/s. That is the fixed relationship used by this converter and by international standards.
How many kilometers per hour are in 1 meter per second?
1 m/s = 3.6 km/h. If you are converting in the opposite direction, use our Meter per Second to Kilometer per Hour converter for the dedicated table and FAQ.
Is the kilometers per hour to meters per second conversion exact?
Yes. Both units are defined by international agreement, so the factor of 0.277778 is exact. Displayed results are rounded to 6 significant digits only for readability.
What is kilometer per hour used for?
Kilometers per hour is the standard speed unit for road traffic in metric countries, expressing how many kilometers are covered in one hour. Speed limits and car speedometers use km/h.