Convert Square Feet to Square Inches
One square foot equals 144 square inches. Type any value to convert square feet to square inches instantly — with a full reference table below.
Convert Square Feet to Square Inches
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How to convert Square Feet to Square Inches
To convert square feet to square inches, multiply by 144. One square foot equals 144 in², and one square inch equals 0.00694444 ft².
- Take the value in square feet — for example 7.5 ft².
- Multiply by 144 (the number of square inches in one square foot).
- 7.5 × 144 = 1,080 in².
Quick mental estimate: Multiply the number of square feet by 144 — that is exact.
Square Feet to Square Inches conversion table
| Square Feet | Square Inches |
|---|---|
| 1 ft² | 144 in² |
| 2 ft² | 288 in² |
| 3 ft² | 432 in² |
| 5 ft² | 720 in² |
| 10 ft² | 1,440 in² |
| 20 ft² | 2,880 in² |
| 50 ft² | 7,200 in² |
| 100 ft² | 14,400 in² |
| 200 ft² | 28,800 in² |
| 500 ft² | 72,000 in² |
| 1,000 ft² | 144,000 in² |
| 5,000 ft² | 720,000 in² |
| Square Inches | Square Feet |
|---|---|
| 1 in² | 0.00694444 ft² |
| 2 in² | 0.0138889 ft² |
| 3 in² | 0.0208333 ft² |
| 5 in² | 0.0347222 ft² |
| 10 in² | 0.0694444 ft² |
| 20 in² | 0.138889 ft² |
| 50 in² | 0.347222 ft² |
| 100 in² | 0.694444 ft² |
| 200 in² | 1.388889 ft² |
| 500 in² | 3.472222 ft² |
| 1,000 in² | 6.944444 ft² |
| 5,000 in² | 34.72222 ft² |
About converting Square Feet to Square Inches
Square Feet (ft²) and Square Inches (in²) are both units of area. The exact factor is 1 ft² = 144 in², so multiply by 144 to go from square feet to square inches (or divide to go back).
The conversion runs entirely in your browser. Need the reverse? Use the Square Inches to Square Feet converter, or the full unit converter for every unit at once.
Real-world area in square feet and square inches
| Example | Square Feet | Square Inches |
|---|---|---|
| A4 sheet of paper | 0.671345 ft² | 96.67369 in² |
| A car parking space (2.5 × 5 m) | ≈ 134.5489 ft² | ≈ 19,375.04 in² |
| A doubles tennis court (23.77 × 10.97 m) | 2,806.764 ft² | 404,174 in² |
| An NBA basketball court (94 × 50 ft) | 4,700 ft² | 676,800 in² |
“≈” marks typical values; the rest are defined or measured figures.
The units
A square 1 foot on each side, exactly 0.09290304 m².
Used for: Floor area in the US, UK, Canada and India.
A square 1 inch on each side, exactly 6.4516 cm².
Used for: Small parts, screens and pressure (psi = pounds per square inch).
Area factors are the squares of exact length factors, so they are exact too (an international acre is exactly 4,046.8564224 m²).