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.

What is metre per minute?

Metre per minute is a unit of speed expressing the distance in metres covered in one minute. It is used in industrial machinery, conveyor belt speeds, and slow-motion technical processes.

Real-world uses

Metres per minute is used in manufacturing for conveyor belt speeds, CNC machine feed rates, and surface cutting speeds. Treadmill speeds at low settings may be displayed in m/min. It is also used for walking speed in pedestrian traffic studies.

History

Metres per minute became a practical unit in industrial settings where processes operate too slowly for m/s to give convenient numbers but too fast for m/h. It is particularly entrenched in machining and metalworking standards.

Common mistakes

Confusing metres per minute with metres per second—they differ by a factor of 60. An average walking speed of about 80 m/min equates to roughly 1.33 m/s or 4.8 km/h.

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 kilometre per hour = 16.66666667 metre per minute

1 metre per minute = 0.01666667 metre per second

How to convert kilometre per hour to metre per minute

To convert kilometre per hour to metre per minute, multiply the value by 16.66666667.

To convert metre per minute back to kilometre per hour, multiply by 0.06.

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.

Quick reference: kilometre per hour to metre per minute

kilometre per hour	metre per minute
0.1	1.66666667
0.5	8.33333333
1	16.66666667
2	33.33333334
5	83.33333334
10	166.66666668
25	416.6666667
50	833.3333334
100	1,666.6666668
250	4,166.666667
500	8,333.333334
1,000	16,666.666668

Common values

	kilometre per hour	metre per minute
Walking speed	5.04 kilometre per hour	84 metre per minute
City speed limit	50.04 kilometre per hour	834 metre per minute
Highway driving	112.67999999 kilometre per hour	1,878 metre per minute
Commercial aircraft	899.99999993 kilometre per hour	15,000 metre per minute
Speed of sound (sea level)	1,225.0439999 kilometre per hour	20,417.4 metre per minute

Available Speed units

More kilometre per hour conversions

Assumption: Mach uses an approximate sea-level reference (about 340.29 m/s).