Square feet to Square inches Converter
Convert square foot to square inch instantly. Type a value below — the result updates as you type.
When you need to convert square foot to square inch
Area conversions are essential when buying land, ordering flooring, turf or paint, or comparing property listings that quote space in different units across regions.
Typical values: 0.5 ft² is about 72 in², and 5 ft² works out to roughly 720 in². Because the ratio is fixed at 144, you can scale any amount linearly — doubling the square feet doubles the square inches.
Estate agents, builders and gardeners each favour different area units, so a quick conversion keeps quotes and material orders consistent.
How to convert square foot to square inch
One square foot equals 144 square inches. To convert, multiply the number of square feet by 144:
square inches = square feet × 144
For example, 10 square feet × 144 = 1440 square inches.
Square feet to square inches conversion table
| Area (ft²) | Square inches (in²) |
|---|---|
| 1 ft² | 144 in² |
| 2 ft² | 288 in² |
| 3 ft² | 432 in² |
| 5 ft² | 720 in² |
| 10 ft² | 1440 in² |
| 20 ft² | 2880 in² |
| 50 ft² | 7200 in² |
| 100 ft² | 14400 in² |
FAQ
How many square inches are in a square foot?
One square foot = 144 square inches.
How do I convert square inches back to square feet?
Divide by 144, or use the square inches to square feet converter.