Home › Unit Conversion › Meters per second to Kilometers per hour
Meters per second to Kilometers per hour (m/s to km/h)
Convert meters per second to kilometers per hour: 1 m/s = 3.6 km/h. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.
Formula
1 m/s = 3.6 km/h
kilometers per hour = meters per second × 3.6 — reverse: meters per second = kilometers per hour × 0.2777777778
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 m/s = 18 km/h
- 12.5 m/s = 45 km/h
- 100 m/s = 360 km/h
Meters per second to kilometers per hour conversion table
| Meters per second (m/s) | Kilometers per hour (km/h) |
|---|---|
| 1 | 3.6 |
| 2 | 7.2 |
| 3 | 10.8 |
| 4 | 14.4 |
| 5 | 18 |
| 6 | 21.6 |
| 7 | 25.2 |
| 8 | 28.8 |
| 9 | 32.4 |
| 10 | 36 |
| 15 | 54 |
| 20 | 72 |
| 25 | 90 |
| 30 | 108 |
| 40 | 144 |
| 50 | 180 |
| 75 | 270 |
| 100 | 360 |
| 200 | 720 |
| 250 | 900 |
| 500 | 1800 |
| 1000 | 3600 |
FAQ
How many kilometers per hour are in one meter per second?
1 m/s = 3.6 km/h. 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 meters per second to kilometers per hour?
Multiply the value in meters per second by 3.6: kilometers per hour = meters per second × 3.6. For example, 5 m/s = 18 km/h.
How do I convert kilometers per hour back to meters per second?
Multiply by the inverse factor 0.2777777778 (meters per second = kilometers per hour × 0.2777777778), or use the kilometers per hour-to-meters per second page.
Related conversions
- Kilometers per hour to meters per second (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=m%2Fs&to_unit=km%2Fh - MCP: server
https://tttkmbb.com/mcp, toolconvert_unitswith{"value":5,"from_unit":"m/s","to_unit":"km/h"} - Markdown: https://tttkmbb.com/conversion/meters-per-second-to-kmh.md · JSON: https://tttkmbb.com/conversion/meters-per-second-to-kmh.json (add
?value=for a result) · Units: /api/v1/units?quantity=speed - OpenAPI operationId:
convert_units. Freshness:static. Authentication: none.