Square inch

From Wikipedia, the free encyclopedia

For other uses, see square.

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:

square in
sq inches, sq inch, sq in
inches/-2, inch/-2, in/-2
inches^2, inch^2, in^2
inches², inch², in²

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

[edit] Equivalence with other units of area

1 square inch (assuming an international inch) is equal to:

0.0069444444444 square feet (1 square foot is equal to 144 square inches)
about 0.00077160493827160493 square yards (1 square yard is equal to 1,296 square inches)
6.4516 square centimetres (1 square centimetre is equal to about 0.15500031 square inches)
0.00064516 square metres (1 square metre is equal to about 1,550.0031 square inches)