Convert square feet to square inches and square inches to square feet instantly. Bidirectional area converter with formula and common values.
To convert square feet to square inches, multiply by 144. Since there are 12 inches in a foot, squaring both sides gives 144 square inches per square foot.
| Square Feet | Square Inches |
|---|---|
| 0.5 | 72 |
| 2 | 288 |
| 4 | 576 |
| 8 | 1,152 |
| 12 | 1,728 |
| 32 | 4,608 |
| 50 | 7,200 |
Square Feet to Square Meters Converter
Convert square feet to square meters and square meters to square feet.
Acres to Hectares Converter
Convert acres to hectares and hectares to acres for land measurement.
Square Miles to Square Kilometers Converter
Convert square miles to square kilometers and square kilometers to square miles.
Square Yards to Square Meters Converter
Convert square yards to square meters and square meters to square yards.
Square Inches to Square Centimeters Converter
Convert square inches to square centimeters and square centimeters to square inches.
Hectares to Acres Converter
Convert hectares to acres and acres to hectares for land measurement.
One square foot equals exactly 144 square inches (12 × 12).
Multiply the number of square feet by 144. For example, 12 sq ft × 144 = 1,728 sq in.
Because one foot equals 12 inches, a square foot is 12 inches × 12 inches = 144 square inches.
This conversion is common in woodworking, crafting, tiling, and any project requiring precise small-area measurements.