Meters per second to kilometers per hour converter

Meters per second often come from motion experiments or physical equations. Restating this speed on a road-speed scale can make its size easier to picture. The unit conversion does not introduce an acceleration; acceleration needs a change of velocity over time.

One metre per second is exactly 3.6 kilometers per hour. One kilometre per hour is 1,000 m in 3,600 s, so 1 m/s is exactly 3.6 km/h.

Multiply the number of meters per second by 3.6. For example, 10 m/s × 3.6 = 36 km/h. To go the other way, divide by 3.6.

Accuracy depends on your inputs and the method's assumptions. Decimal arithmetic uses 50 significant digits, but estimates, numerical methods and source data can be less precise; the displayed rounding does not remove those limits. It is checked against 3 worked examples whose answers come from independent sources; for example, “10 m/s to km/h” is checked against Exact-fraction computation from the legal unit definitions (scripts/gen-pairs.py, Python fractions).

NIST SP 811 (2008), Guide for the Use of the International System of Units, Appendix B; NIST Handbook 44, Appendix C: General tables of units of measurement; BIPM, The International System of Units (SI Brochure), 9th edition.