What is a Square Inch (in²)?

A square inch (in²) is a unit of area equal to a square with sides of one inch.

Definition

Symbol

in²

Category

Area

System

Imperial

1 {unit} = {value} {otherUnit}

1 Square Inch = 645.16 Square Millimeter (mm²)

1 Square Inch = 6.4516 Square Centimeter (cm²)

1 Square Inch = 0.00064516 Square Meter ()

1 Square Inch = 6.4516e-10 Square Kilometer (km²)

1 Square Inch = 0.00694444 Square Foot (ft²)

Common Uses

  • Display resolution
  • Material cross-section
  • Label sizing

Square Inch Conversions

Related Units

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