Full name: square inch
Plural form: square inches
Symbol: in2
Alternate spelling: sq in
Category type: area
Scale factor: 0.00064516
The SI derived unit for area is the square meter.
1 square meter is equal to 1550.0031000062 square inches.
Valid units must be of the area type.
You can use this form to select from known units:
A square inch is by definition the area enclosed by a square with sides each 1 inch long.