Unit converter
Metres per second to kilometres per hour.
Convert m/s to km/h and km/h to m/s. Type in either box and the other follows. Multiply by 3.6, exactly. It is the one conversion in this family worth memorising.
| m/s | km/h |
|---|---|
| 1 m/s | 3.6 km/h |
| 2 m/s | 7.2 km/h |
| 3 m/s | 10.8 km/h |
| 5 m/s | 18 km/h |
| 10 m/s | 36 km/h |
| 15 m/s | 54 km/h |
| 20 m/s | 72 km/h |
| 25 m/s | 90 km/h |
| 30 m/s | 108 km/h |
| 50 m/s | 180 km/h |
- Conversion goes through m/s in both directions, so neither figure is rounded on the way.
Definitions
- The metre per second is the SI unit of speed, and the one physics equations expect.
- The kilometre per hour is the speed unit on road signs across most of the world. Dividing by 3.6 gives metres per second.
- This conversion is exact by definition. 1 m/s = 3.6 km/h.
- Speed is converted through m/s.
How it works
One direction multiplies and the other divides by the same number, so nothing is lost by going back and forth.
The value passes through m/s, the unit every other speed unit on the site is defined against, rather than a number written into this page on its own. That is why the figure here, the figure in the table above and the general speed converter always agree.
Display precision sets a maximum number of significant figures and trims trailing zeroes, so it changes what you see and never what was calculated. The editable box always holds a plain number at full working precision, so you can carry on from either side.
Common questions this answers: how many kilometres per hour in a metre per second (3.6), how many metres per second in a kilometre per hour (0.277778), and what 10 m/s is in kilometres per hour (36 km/h).
- Speed converter
- Miles per hour to kilometres per hour
- Knots to kilometres per hour
- Metres per second to miles per hour
- All converters
- Free
- No ads
- No tracking
- No account
- Works offline once loaded
From the maker of Ans — a scientific calculator you can own. Same idea: a proper instrument, nothing in the way.