Convert mm/h to km/h

Conversion Calculator

Enter your value in the conversion calculator below.

TIP: If the result of your conversion is 0, try increasing the "Decimals".

How to convert mm/h to km/h: Enter a value in the mm/h field and click on the "Calculate km/h" button. Your answer will appear in the km/h field.

Conversion Definitions

The following is a list of definitions relating to conversions between millimeters per hour and kilometers per hour.

What is millimeters per hour (mm/h)?

Millimeters per hour is a unit of Speed or Velocity in the Metric System. It measures the number of millimeters traveled in an hour. The symbol for millimeters per hour is mm/h and the International spelling for this unit is millimetres per hour. There are 1,000,000 mm/h in km/h.

What is kilometers per hour (km/h)?

Kilometers per hour is a unit of Speed or Velocity in the Metric System. It measures the number of kilometers traveled in an hour. The symbol for kilometers per hour is km/h and the International spelling for this unit is kilometres per hour. There are 0.000001 km/h in mm/h.

Conversion Formula

Let's take a closer look at the conversion formula so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.

The formula to convert from mm/h to km/h is:

km/h = mm/h ÷ 1,000,000

Conversion Example

Next, let's look at an example showing the work and calculations that are involved in converting from millimeters per hour to kilometers per hour (mm/h to km/h).

Milllimeters per hour to Kilometers per hour Conversion Example

Task: Convert 25,000 millimeters per hour to kilometers per hour (show work)

Formula:
mm/h ÷ 1,000,000 = km/h

Calculations:
25,000 mm/h ÷ 1,000,000 = 0.025 km/h

Result:
25,000 mm/h is equal to 0.025 km/h

Conversion Table

For quick reference purposes, below is a conversion table that you can use to convert from mm/h to km/h.

Milllimeters per hour to Kilometers per hour Conversion Chart

millimeters per hour (mm/h)	kilometers per hour (km/h)
1 mm/h	0.000001 km/h
2 mm/h	0.000002 km/h
3 mm/h	0.000003 km/h
4 mm/h	0.000004 km/h
5 mm/h	0.000005 km/h
6 mm/h	0.000006 km/h
7 mm/h	0.000007 km/h
8 mm/h	0.000008 km/h
9 mm/h	0.000009 km/h
10 mm/h	0.00001 km/h
20 mm/h	0.00002 km/h
30 mm/h	0.00003 km/h
40 mm/h	0.00004 km/h
50 mm/h	0.00005 km/h
75 mm/h	0.000075 km/h
100 mm/h	0.0001 km/h
250 mm/h	0.00025 km/h
500 mm/h	0.0005 km/h
750 mm/h	0.00075 km/h
1,000 mm/h	0.001 km/h
2,500 mm/h	0.0025 km/h
5,000 mm/h	0.005 km/h
7,500 mm/h	0.0075 km/h
10,000 mm/h	0.01 km/h
25,000 mm/h	0.025 km/h
50,000 mm/h	0.05 km/h
75,000 mm/h	0.075 km/h
100,000 mm/h	0.1 km/h
250,000 mm/h	0.25 km/h

Related Units

The following tables provide a summary of the Speed or Velocity units (Per Hour, Per Minute, Per Second and Per Millisecond) within their respective measurement systems.

Per Hour

Unit	Symbol	Measurement System	Description
inches per hour	in/h	US Customary Units/Imperial System	36 in/h = 1 yd/h
feet per hour	ft/h	US Customary Units/Imperial System	1 ft/h = 12 in/h
yards per hour	yd/h	US Customary Units/Imperial System	1 yd/h = 3 ft/h
miles per hour	mph	US Customary Units/Imperial System	1 mph = 5280 ft/h
millimeters per hour	mm/h	Metric System	1 m/h = 1000 mm/h
centimeters per hour	cm/h	Metric System	1 m/h = 100 cm/h
decimeters per hour	dm/h	Metric System	1 m/h = 10 dm/h
meters per hour	m/h	Metric System	base unit
kilometers per hour	km/h	Metric System	1 km/h = 1000 m/h
knot	kn	Non-SI (International)	1 knot = 1.15078 mph

Per Minute

Unit	Symbol	Measurement System	Description
inches per minute	in/m	US Customary Units/Imperial System	36 in/m = 1 yd/m
feet per minute	ft/m	US Customary Units/Imperial System	1 ft/m = 12 in/m
yards per minute	yd/m	US Customary Units/Imperial System	1 yd/m = 3 ft/m
miles per minute	mi/m	US Customary Units/Imperial System	1 mi/m = 5280 ft/m
millimeters per minute	mm/m	Metric System	1 m/m = 1000 mm/m
centimeters per minute	cm/m	Metric System	1 m/m = 100 cm/m
decimeters per minute	dm/m	Metric System	1 m/m = 10 dm/m
meters per minute	m/m	Metric System	base unit
kilometers per minute	km/m	Metric System	1 km/m = 1000 m/m

Per Second

Unit	Symbol	Measurement System	Description
inches per second	in/s	US Customary Units/Imperial System	36 in/s = 1 yd/s
feet per second	ft/s	US Customary Units/Imperial System	1 ft/s = 12 in/s
yards per second	yd/s	US Customary Units/Imperial System	1 yd/s = 3 ft/s
miles per second	mi/s	US Customary Units/Imperial System	1 mi/s = 5280 ft/s
millimeters per second	mm/s	Metric System	1 m/s = 1000 mm/s
centimeters per second	cm/s	Metric System	1 m/s = 100 cm/s
decimeters per second	dm/s	Metric System	1 m/s = 10 dm/s
meters per second	m/s	Metric System	base unit
kilometers per second	km/s	Metric System	1 km/s = 1000 m/s

Per Millisecond

Unit	Symbol	Measurement System	Description
millimeters per millisecond	mm/ms	Metric System	1 m/ms = 1000 mm/ms
centimeters per millisecond	cm/ms	Metric System	1 m/ms = 100 cm/ms
decimeters per millisecond	dm/ms	Metric System	1 m/ms = 10 dm/ms
meters per millisecond	m/ms	Metric System	base unit
kilometers per millisecond	km/ms	Metric System	1 km/ms = 1000 m/ms

Note: For Speed or Velocity conversions, US Customary Units and the Imperial System are equivalent.

Find a Conversion

Looking for a conversion? Select a conversion type and the desired units.

Type

From

To

Go to Conversion