Square inch

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A square inch (plural: square inches) is a unit of area, equal to the area of a square with sides of one inch. The following symbols are used to denote square inches:

or in some cases "^2

The square inch is a common unit of measurement in the United States and the United Kingdom.

Equivalence with other units of area[edit]

1 square inch (assuming an international inch) is equal to: (the overbars indicate repeating decimals)