How to convert Square meter to Square millimeter

Conversion factor and calculation steps from Square meter (m²) to Square millimeter (mm²).

Conversion logic

Each unit is defined via the base unit (square meter (m²)). The value is first converted to the base unit, then to the selected unit.

1 mm² = 1.00000000e-6 m²

1 m² ÷ 1.00000000e-6 = 1000000 mm²