Metres per Second to Kilometres per Hour
Type a value in metres per second to see it in kilometres per hour. It works both ways: type in the kilometres per hour box to convert back.
Formula
To convert metres per second to kilometres per hour, multiply by 3.6.
1 m/s = 3.6 km/h and 1 km/h = 0.277777777778 m/s.
Metres per second to kilometres per hour table
| Metres per second | Kilometres per hour |
|---|---|
| 1 m/s | 3.6 km/h |
| 2 m/s | 7.2 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 |
| 100 m/s | 360 km/h |
Worked examples
2 m/s in kilometres per hour
2 m/s
7.2 km/h
2 × 3.6 = 7.2
20 m/s in kilometres per hour
20 m/s
72 km/h
20 × 3.6 = 72
50 m/s in kilometres per hour
50 m/s
180 km/h
50 × 3.6 = 180
About Metres per Second to Kilometres per Hour
This converter turns metres per second into kilometres per hour as you type, and works the other way too: type in the kilometres per hour box to convert back. To convert metres per second to kilometres per hour, multiply by 3.6. For example, 2 m/s is 7.2 km/h, and 20 m/s is 72 km/h.
Speed limits in the UK are in miles per hour, most other countries use kilometres per hour, and sailors and pilots use knots, so travellers and drivers convert speeds often. Both units have exact definitions, so the converter gives an exact result, rounded only for display. Use the table below for common values, or set the decimal places to round the answer for a form or a label.
How to use Metres per Second to Kilometres per Hour
- Type the amount in metres per second in the first box.
- Read the answer in kilometres per hour in the second box and in the result line below.
- To convert the other way, type in the kilometres per hour box instead, or use the swap button to open the kilometres per hour to metres per second page.
- Choose a number of decimal places if you need a rounded figure, then copy the result line.
Common uses
- Driving abroad or in a hire car with a different speedometer
- Reading a wind speed forecast
- Comparing running, cycling or boat speeds
- Physics and engineering homework
Frequently asked questions
How many kilometres per hour are in one metre per second?
There are 3.6 kilometres per hour in one metre per second. This figure is exact, because both units have fixed definitions.
How do I convert metres per second to kilometres per hour?
To convert metres per second to kilometres per hour, multiply by 3.6. For example, 50 m/s is 180 km/h.
How do I convert kilometres per hour to metres per second?
Going the other way, divide by 3.6 (the same as multiplying by 0.2777777778). The kilometres per hour to metres per second converter does this for you.
What is 25 m/s in kilometres per hour?
25 m/s is 90 km/h.
Why do ships and aircraft use knots?
A knot is one nautical mile per hour, and a nautical mile matches one minute of latitude. That makes distances on charts easy to work out, so knots became the standard at sea and in the air.