Online calculator to convert millimeters to kilometers (mm to km) with formulas, examples, and tables. Our conversions provide a quick and easy way to convert between Length or Distance units.
Conversion Calculator
Enter your value in the conversion calculator below.
Convert mm to km
TIP: If the result of your conversion is 0, try increasing the "Decimals".
Conversion Definitions
The following is a list of definitions relating to conversions between millimeters and kilometers.
What is a millimeter (mm)?
A millimeter is a unit of Length or Distance in the Metric System. The symbol for millimeter is mm. There are 1,000,000 millimeters in a kilometer. The International spelling for this unit is millimetre.
What is a kilometer (km)?
A kilometer is a unit of Length or Distance in the Metric System. The symbol for kilometer is km. There are 0.000001 kilometers in a millimeter. The International spelling for this unit is kilometre.
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 to km is:
km = mm ÷ 1,000,000
Conversion Example
Next, let's look at an example showing the work and calculations that are involved in converting from millimeters to kilometers (mm to km).
Millimeter to Kilometer Conversion Example
Task: Convert 450,000 millimeters to kilometers (show work) Formula: mm ÷ 1,000,000 = km Calculations: 450,000 mm ÷ 1,000,000 = 0.45 km Result: 450,000 mm is equal to 0.45 km
Conversion Table
For quick reference purposes, below is a conversion table that you can use to convert from mm to km.
Millimeters to Kilometers Conversion Chart
millimeters (mm) | kilometers (km) |
---|---|
1 mm | 0.000001 km |
2 mm | 0.000002 km |
3 mm | 0.000003 km |
4 mm | 0.000004 km |
5 mm | 0.000005 km |
6 mm | 0.000006 km |
7 mm | 0.000007 km |
8 mm | 0.000008 km |
9 mm | 0.000009 km |
10 mm | 0.00001 km |
20 mm | 0.00002 km |
30 mm | 0.00003 km |
40 mm | 0.00004 km |
50 mm | 0.00005 km |
75 mm | 0.000075 km |
100 mm | 0.0001 km |
250 mm | 0.00025 km |
500 mm | 0.0005 km |
750 mm | 0.00075 km |
1,000 mm | 0.001 km |
2,500 mm | 0.0025 km |
5,000 mm | 0.005 km |
7,500 mm | 0.0075 km |
10,000 mm | 0.01 km |
25,000 mm | 0.025 km |
50,000 mm | 0.05 km |
75,000 mm | 0.075 km |
100,000 mm | 0.1 km |
250,000 mm | 0.25 km |
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