Square Millimeter to Square Kilometer Conversion (mm² to km²)

There are 1.0E-12 square kilometer in a square millimeter.
1 Square Millimeter is equal to 1.0E-12 Square Kilometer.
1 mm² = 1.0E-12 km²

A square millimeter is a unit of area used for measuring very small areas. The unit is used as a part of SI measurement system and has a symbol of mm². One square millimeter is the area that equals to 1/100^th of a square centimeter (or 0.01 cm²) or equals to 1/1000000^th of a square meter (1.0 x 10^-6 m²).

A square kilometer is a unit of surface area allowing measuring quite large areas. It is one of the base SI units used widely in all countries of the world to measure large territories like the ones of a country, a region, and so on. In order to understand what one square kilometer is one can imagine the area of the Jerusalem Old City or the area of Rio de Los Angeles State Park in California. This unit is equal to 100 hectares and has an internationally accepted symbol of km².

This is a very easy to use square millimeter to square kilometer converter. First of all just type the square millimeter (mm²) value in the text field of the conversion form to start converting mm² to km², then select the decimals value and finally hit convert button if auto calculation didn't work. Square Kilometer value will be converted automatically as you type.

The decimals value is the number of digits to be calculated or rounded of the result of square millimeter to square kilometer conversion.

You can also check the square millimeter to square kilometer conversion chart below, or go back to square millimeter to square kilometer converter to top.