Home › Unit Conversion › Kilometers per hour to Meters per second
Kilometers per hour to Meters per second (km/h to m/s)
Convert kilometers per hour to meters per second: 1 km/h = 0.277778 m/s. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.
Formula
1 km/h = 0.277778 m/s
meters per second = kilometers per hour × 0.2777777778 — reverse: kilometers per hour = meters per second × 3.6
The factor is derived from the SI definitions of both units (base unit: m/s) as listed in NIST SP 811; results on this page are shown to 6 significant figures, the API returns up to 12.
Worked examples
- 5 km/h = 1.38889 m/s
- 12.5 km/h = 3.47222 m/s
- 100 km/h = 27.7778 m/s
Kilometers per hour to meters per second conversion table
| Kilometers per hour (km/h) | Meters per second (m/s) |
|---|---|
| 1 | 0.277778 |
| 2 | 0.555556 |
| 3 | 0.833333 |
| 4 | 1.11111 |
| 5 | 1.38889 |
| 6 | 1.66667 |
| 7 | 1.94444 |
| 8 | 2.22222 |
| 9 | 2.5 |
| 10 | 2.77778 |
| 15 | 4.16667 |
| 20 | 5.55556 |
| 25 | 6.94444 |
| 30 | 8.33333 |
| 40 | 11.1111 |
| 50 | 13.8889 |
| 75 | 20.8333 |
| 100 | 27.7778 |
| 200 | 55.5556 |
| 250 | 69.4444 |
| 500 | 138.889 |
| 1000 | 277.778 |
FAQ
How many meters per second are in one kilometer per hour?
1 km/h = 0.277778 m/s. The factor comes from the SI definitions of both units (NIST SP 811 / BIPM), so it is exact or correct to at least 10 significant figures.
What is the formula to convert kilometers per hour to meters per second?
Multiply the value in kilometers per hour by 0.2777777778: meters per second = kilometers per hour × 0.2777777778. For example, 5 km/h = 1.38889 m/s.
How do I convert meters per second back to kilometers per hour?
Multiply by the inverse factor 3.6 (kilometers per hour = meters per second × 3.6), or use the meters per second-to-kilometers per hour page.
Related conversions
- Meters per second to kilometers per hour (reverse)
- Speed Converter — all speed units in one tool
- Kilometers per hour to Miles per hour
- Miles per hour to Kilometers per hour
- Meters per second to Miles per hour
- Miles per hour to Meters per second
- Knots to Kilometers per hour
- Kilometers per hour to Knots
- Knots to Miles per hour
- Miles per hour to Knots
Machine access
- API:
GET https://tttkmbb.com/api/v1/convert?value=5&from_unit=km%2Fh&to_unit=m%2Fs - MCP: server
https://tttkmbb.com/mcp, toolconvert_unitswith{"value":5,"from_unit":"km/h","to_unit":"m/s"} - Markdown: https://tttkmbb.com/conversion/kmh-to-meters-per-second.md · JSON: https://tttkmbb.com/conversion/kmh-to-meters-per-second.json (add
?value=for a result) · Units: /api/v1/units?quantity=speed - OpenAPI operationId:
convert_units. Freshness:static. Authentication: none.