square feet to square inches calculator
Convert square feet to square inches and square yards instantly. Enter an area and get the small-scale figure for parts, tile, and material specs.
Square feet works for rooms and floors, but small materials like glass, tile samples, gasket stock, and laminate sheets are often priced or cut by the square inch. This calculator converts a square-foot area down to square inches — and up to square yards — so you can match material specs at whatever scale they’re sold in.
How this calculator works
Multiply the square footage by the conversion factor to get square inches, and divide by 9 to get square yards.
Formula: Square inches = square feet × 144. Square yards = square feet ÷ 9.
Worked example
10 square feet:
- Square inches: 10 × 144 = 1440 in²
- Square yards: 10 ÷ 9 ≈ 1.111 yd²
Reference
| Square feet | Square inches | Square yards |
|---|---|---|
| 1 ft² | 144 in² | 0.111 yd² |
| 5 ft² | 720 in² | 0.556 yd² |
| 10 ft² | 1440 in² | 1.111 yd² |
| 20 ft² | 2880 in² | 2.222 yd² |
Where this conversion is used
Sheet materials like glass, acrylic, and laminate are frequently priced per square inch, so converting a room or panel’s square footage down lets you check the real cost before ordering. Once you have your total square footage measured, the Square Footage Calculator handles the length-times-width math for irregular rooms and multiple sections.
Frequently asked questions
How many square inches are in a square foot?
1 square foot equals 144 square inches, because a square foot is 12 inches by 12 inches, and 12 × 12 = 144.
Why would I need square inches instead of square feet?
Small-format materials like tile samples, glass panes, laminate sheets, and gasket or panel stock are often priced or spec'd per square inch. Converting your project's square footage down to square inches lets you compare unit costs apples-to-apples.
Is 144 the exact conversion factor?
Yes. Since a foot is exactly 12 inches, a square foot is exactly 12 × 12 = 144 square inches — there's no rounding in the factor itself.
What's the square yards figure for?
Square yards is the unit carpet and large-format flooring are often priced in. It's shown alongside square inches so you can move in either direction — down to small parts or up to bulk flooring — from the same square footage.
How do I convert square inches back to square feet?
Divide square inches by 144. A 288 square inch panel is 2 square feet.
Estimates only. Verify quantities with your supplier before purchasing.