Calculate area in square inches (in²) from a width and length in inches. A 12 × 12 in piece is 144 in² (= 929.03 cm²).
144 in²
12 in × 12 in = 144 in²
| Width (in) | Length (in) | Area (in²) | Area (cm²) |
|---|
How to calculate square inches
in² = width(in) × length(in). Both dimensions must be in inches; convert feet first (ft × 12).
Common mistake
Multiplying mixed units. A 1 ft × 12 in rectangle is not 12 in² — convert 1 ft to 12 in first, giving 144 in².
Cubic centimetres calculator · Square feet to cubic feet · in³ to in² converter
