What is a Square Millimeter (mm²)?

A square millimeter (mm²) is a unit of area equal to a square with sides of one millimeter.

Definition

Symbol

mm²

Category

Area

System

Metric

1 {unit} = {value} {otherUnit}

1 Square Millimeter = 0.01 Square Centimeter (cm²)

1 Square Millimeter = 0.000001 Square Meter ()

1 Square Millimeter = 1e-12 Square Kilometer (km²)

1 Square Millimeter = 0.00155 Square Inch (in²)

1 Square Millimeter = 0.0000107639 Square Foot (ft²)

Common Uses

  • Cross-section of wires
  • Precision engineering
  • Small component sizing

Square Millimeter Conversions

Related Units

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