Square Millimeter to Square Inch Converter

0.155 square inches

Formula: mm² × 0.00155 = in²

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Understanding Square Millimeters to Square Inches

What is a Square Millimeter (mm²)?

A square millimeter represents the area of a square with sides measuring 1 millimeter. It's commonly used in metric measurements for very small areas.

What is a Square Inch (in²)?

A square inch is the area of a square with sides measuring 1 inch. It's a standard unit in the imperial and US customary systems.

Common Applications

  • Electronics and circuit board design
  • Small-scale engineering projects
  • Medical measurements
  • Scientific calculations