Speed converter
Meters per Second to Kilometers per Hour
If you need to know how many Kilometers per Hour one Meters per Second contains, the answer is 3.6. The conversion is linear, so 10 m/s is 36 km/h and 100 m/s is 360 km/h. Use the converter for any other value.
Formula 1 m/s = 3.6 km/h
Need the other direction? Kilometers per Hour to Meters per Second.
How to convert Meters per Second to Kilometers per Hour
Metres per second is the SI unit of speed and the basis for scientific measurement. Kilometres per hour is the standard road-speed unit in most of the world.
To convert Meters per Second to Kilometers per Hour, multiply the value in m/s by 3.6. For example, 10 m/s × 3.6 = 36 km/h. This works because the ratio between the two units is constant for every value in speed.
Worked examples
| m/s | km/h |
|---|---|
| 1 m/s | 3.6 km/h |
| 2.5 m/s | 9 km/h |
| 5 m/s | 18 km/h |
| 10 m/s | 36 km/h |
| 25 m/s | 90 km/h |
| 50 m/s | 180 km/h |
| 100 m/s | 360 km/h |
Reverse conversion
| km/h | m/s |
|---|---|
| 1 km/h | 0.27777778 m/s |
| 5 km/h | 1.388889 m/s |
| 10 km/h | 2.777778 m/s |
| 25 km/h | 6.944444 m/s |
| 50 km/h | 13.888889 m/s |
| 100 km/h | 27.777778 m/s |
When this conversion is useful
This is the calculation you need when you are reading a car spec, a weather report or an aviation document from another country. Because the factor is fixed, you can use the same number for a single measurement or for a batch: 1,000 m/s is 3,600 km/h.
Is the conversion exact?
Yes for practical use: the factors come from international definitions, with rounding applied only for display.
Reference: BIPM SI Brochure and NIST SP 811. Last reviewed: 2026-11-01.
m/s to km/h conversion chart
The chart lists the most requested values. For a value that is not here, use the converter at the top of the page.
| Meters per Second (m/s) | Kilometers per Hour (km/h) |
|---|---|
| 1 m/s | 3.6 km/h |
| 2 m/s | 7.2 km/h |
| 3 m/s | 10.8 km/h |
| 4 m/s | 14.4 km/h |
| 5 m/s | 18 km/h |
| 6 m/s | 21.6 km/h |
| 7 m/s | 25.2 km/h |
| 8 m/s | 28.8 km/h |
| 9 m/s | 32.4 km/h |
| 10 m/s | 36 km/h |
| 11 m/s | 39.6 km/h |
| 12 m/s | 43.2 km/h |
| 13 m/s | 46.8 km/h |
| 14 m/s | 50.4 km/h |
| 15 m/s | 54 km/h |
| 16 m/s | 57.6 km/h |
| 17 m/s | 61.2 km/h |
| 18 m/s | 64.8 km/h |
| 19 m/s | 68.4 km/h |
| 20 m/s | 72 km/h |
| 21 m/s | 75.6 km/h |
| 22 m/s | 79.2 km/h |
| 23 m/s | 82.8 km/h |
| 24 m/s | 86.4 km/h |
| 25 m/s | 90 km/h |
| 26 m/s | 93.6 km/h |
| 27 m/s | 97.2 km/h |
| 28 m/s | 100.8 km/h |
| 29 m/s | 104.4 km/h |
| 30 m/s | 108 km/h |
| 31 m/s | 111.6 km/h |
| 32 m/s | 115.2 km/h |
| 33 m/s | 118.8 km/h |
| 34 m/s | 122.4 km/h |
| 35 m/s | 126 km/h |
| 36 m/s | 129.6 km/h |
| 37 m/s | 133.2 km/h |
| 38 m/s | 136.8 km/h |
| 39 m/s | 140.4 km/h |
| 40 m/s | 144 km/h |
| 41 m/s | 147.6 km/h |
| 42 m/s | 151.2 km/h |
| 43 m/s | 154.8 km/h |
| 44 m/s | 158.4 km/h |
| 45 m/s | 162 km/h |
| 46 m/s | 165.6 km/h |
| 47 m/s | 169.2 km/h |
| 48 m/s | 172.8 km/h |
| 49 m/s | 176.4 km/h |
| 50 m/s | 180 km/h |
| 60 m/s | 216 km/h |
| 70 m/s | 252 km/h |
| 80 m/s | 288 km/h |
| 90 m/s | 324 km/h |
| 100 m/s | 360 km/h |
Frequently asked questions
How many Kilometers per Hour are in 1 Meters per Second?
1 m/s equals 3.6 km/h.
How do I convert Meters per Second to Kilometers per Hour?
Multiply the m/s value by 3.6. Example: 25 m/s = 90 km/h.
What is 2.5 m/s in km/h?
2.5 m/s = 9 km/h.
Is the m/s to km/h conversion exact?
Yes for practical use: the factors come from international definitions, with rounding applied only for display.
Does the calculator work offline?
Yes. The conversion runs in your browser with JavaScript, so it works after the page has loaded, even without a connection.