The **square millimeter**, abbreviated as **"mm²**", is a unit of area and represents a square with a side length of one millimeter. The square millimeter is an extremely small unit of area and is primarily used in areas where precision and attention to detail are required

## Calculator

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**Use calculator:**

- Select the area measurement into which you want to convert mm².
- Enter the number of square millimeters in the calculator.
- Click on "generate" to get the result.

## Use

**Technology and crafts**: In the planning and design of very small components, such as in precision mechanics, electronics or jewelry design, the square millimeter is often used to indicate size.**Medicine**: In medical imaging, e.g. when measuring tissue areas or tumors, the square millimetre can be used to describe areas.**Paper and printing**: For special printing tasks or in paper production, the square millimeter can be used to indicate the size of small areas or deviations.**Science**: In microscopic examinations or other scientific applications where small areas are of interest, the square millimeter can be used as a unit of measurement.

## Conversion to other area units

**Square kilometer (km²)**: One square millimeter is equal to 0.000000000001$km²$.**Hectare (ha)**: One square millimeter corresponds to 0.0000000001$ha$.**Ar**: One square millimeter equals 0.00000001$Ar$.**Square meter (m²)**: One square millimeter corresponds to 0.00000$m²$.**Square decimeter (dm²)**: One square millimeter corresponds to 0.0001$dm²$.**Square centimeter (cm²)**: One square millimeter corresponds to 0.01 cm².

Despite its small size, it is indispensable in many technical, scientific and craft areas. Due to its direct relationship to other square measurements, conversion to other area units is direct and uncomplicated.

## Surfaces

- Acre
- Ar
- Hectare
- Hectares in square kilometers
- Square centimeter
- Square centimeters in square meters
- Square decimeter
- Square feet
- Square inch
- Square kilometer
- Square meter
- Square meters in ar
- Square meters in hectares
- Square meters in square kilometers
- Square mile
- Square millimeter
- Square millimeters in square centimeters
- Square yard