Convert metre per second to kilometre per hour
1 metre per second = 3.6 kilometres per hour
What is metre per second?
Metre per second is the SI unit of speed. It is used in physics, engineering, and scientific contexts to express velocity, and serves as the reference unit for all speed calculations in this converter.
Real-world uses
Metres per second is the SI unit of speed used in physics, engineering, and scientific research. Wind speed in meteorological data, projectile velocities, and fluid flow rates are expressed in m/s. The speed of sound at sea level is approximately 343 m/s.
History
As an SI derived unit, metres per second became the standard scientific speed unit with the adoption of the SI system in 1960. It naturally combines the base units of length (metre) and time (second).
Common mistakes
Forgetting to convert from km/h—divide by 3.6, not by 3.0 or 60. Also, confusing velocity (vector with direction) with speed (scalar magnitude), both expressed in m/s but with different physical meanings.
What is kilometre per hour?
Kilometre per hour is a unit of speed equal to one kilometre travelled in one hour. It is the most widely used unit for road speed limits, vehicle speedometers, and wind speeds in metric countries.
Real-world uses
Kilometres per hour is the standard speed unit for road traffic in most countries, displayed on car speedometers, speed limit signs, and GPS devices. Weather services report wind speeds in km/h, and athletes track running pace in min/km.
History
Kilometres per hour became widespread as the metric system was adopted for road transport in the 20th century. The first metric speed limits appeared in continental Europe. Today, km/h is used in about 91% of the world's countries for traffic regulation.
Common mistakes
Confusing km/h with m/s—100 km/h is about 27.78 m/s, not 100 m/s. Also, when converting to mph, people often use a rough factor of 1.5 instead of the correct 1.609, leading to inaccurate speed comparisons.
When is this conversion used?
Speed limits, vehicle speedometers, and weather reports for wind speeds use different units depending on the country, making km/h to mph conversion one of the most practical speed conversions.
Worked examples
1 metre per second = 3.6 kilometres per hour
1 kilometre per hour = 0.27777778 metres per second
How to convert metre per second to kilometre per hour
To convert metre per second to kilometre per hour, multiply the value by 3.6.
To convert kilometre per hour back to metre per second, multiply by 0.27777778.
Measurement standards
The SI unit of speed is metres per second (m/s), a derived unit requiring no independent definition. The knot is defined as exactly one nautical mile (1,852 metres) per hour and is sanctioned for maritime and aeronautical navigation by the International Civil Aviation Organization.
Did you know?
The fastest human-made object is the Parker Solar Probe, which reached 635,266 km/h (about 176 km/s) in 2024 during a close pass of the Sun — fast enough to travel from New York to Tokyo in under a minute.
| metres per second | kilometres per hour |
|---|---|
| 0.1 | 0.36 |
| 0.5 | 1.8 |
| 1 | 3.6 |
| 2 | 7.2 |
| 5 | 18 |
| 10 | 36 |
| 25 | 89.99999999 |
| 50 | 179.99999999 |
| 100 | 359.99999997 |
| 250 | 899.99999993 |
| 500 | 1,799.99999986 |
| 1,000 | 3,599.99999971 |
Common values
| metres per second | kilometres per hour | |
|---|---|---|
| Walking speed | 1.4 metres per second | 5.04 kilometres per hour |
| City speed limit | 13.9 metres per second | 50.04 kilometres per hour |
| Highway driving | 31.3 metres per second | 112.67999999 kilometres per hour |
| Commercial aircraft | 250 metres per second | 899.99999993 kilometres per hour |
| Speed of sound (sea level) | 340.29 metres per second | 1,225.0439999 kilometres per hour |
Frequently asked questions
How many kilometres per hour are in 1 metre per second?
1 metre per second = 3.6 kilometres per hour.
How do you convert metre per second to kilometre per hour?
Multiply the metre per second value by 3.6 to get kilometre per hour.
What is 10 metres per second in kilometres per hour?
10 metres per second = 36 kilometres per hour.
How many metres per second are in 1 kilometre per hour?
1 kilometre per hour = 0.27777778 metres per second.
Available Speed units
More metre per second conversions
- Convert metre per second to kilometre per hour
- Convert metre per second to mile per hour
- Convert metre per second to knot
- Convert metre per second to foot per second
- Convert metre per second to metre per minute
- Convert metre per second to kilometre per second
- Convert metre per second to mach (approx at sea level)
- Convert metre per second to centimetre per second
- Convert metre per second to mile per minute
Assumption: Mach uses an approximate sea-level reference (about 340.29 m/s).