Square Inch (in2)
The square inch is a unit of area, used for screen resolution (PPI), material strength (PSI), and small surface measurements. Its symbol is in2.
in2
ft2
1 square inch equals
| Square Feet | 0.00694444 ft2 |
| Square Meters | 0.00064516 m2 |
| Acres | 1.59423e-7 ac |
| Hectares | 6.4516e-8 ha |
About the square inch
The square inch has been used in engineering and trade since the industrial revolution. It is particularly important in pressure measurements (PSI).
In everyday use the square inch appears in screen resolution (PPI), material strength (PSI), and small surface measurements. As a point of reference: a typical computer monitor has about 100 pixels per square inch.