Square Feet to Square Inches Calculator instantly converts ft² to in² using the 144× rule
delivering fast, accurate, and automatic results for any area size.
Perfect for flooring, design, printing, and construction
this tool handles unit conversions with precision and supports feet, inches, cm, and meters.
How to Convert Square Feet to Square Inches (Formula)
Converting from square feet (ft²) to square inches (in²) is simple once you remember the 144× rule — since each foot equals 12 inches in both directions.
- Formula: in² = ft² × 144
- Example 1: 2 ft² × 144 = 288 in²
- Example 2: 5 ft² × 144 = 720 in²
💡 Tip: Multiply by 144 because 1 foot = 12 inches, and area = 12 × 12 = 144 square inches.
Quick Conversion Table
Use this chart to quickly convert square feet (ft²) to square inches (in²) — ideal for flooring, printing, or layout planning.
| Square Feet (ft²) | Square Inches (in²) | Example Use |
|---|---|---|
| 1 | 144 | 1×1 ft tile |
| 2 | 288 | Small board |
| 5 | 720 | Medium surface |
| 10 | 1,440 | Wall section |
| 20 | 2,880 | Large panel |
| 50 | 7,200 | Flooring area |
| 100 | 14,400 | Room layout |
| 250 | 36,000 | Big project |
💡 Tip: Multiply by 144 to get in², or divide by 144 to go back to ft².
Why Multiply by 144?
Every square foot (ft²) contains 144 square inches (in²) because each foot equals 12 inches — and area is two-dimensional.
When converting ft² → in², you multiply by 144:
12 × 12 = 144 → that’s the total number of square inches in one square foot.
Conversion Chart for Common Dimensions
Quickly compare square feet and square inches for common dimensions — ideal for tiles, boards, fabric layouts, and design work.
| Length (in) | Width (in) | Area (ft²) | Area (in²) |
|---|---|---|---|
| 12 | 12 | 1 | 144 |
| 24 | 24 | 4 | 576 |
| 36 | 36 | 9 | 1,296 |
| 48 | 48 | 16 | 2,304 |
| 60 | 60 | 25 | 3,600 |
💡 Perfect for floor tiles, wood panels, or fabric cutting plans — this visual reference helps you check area conversions instantly.
Real-Life Applications
The Square Feet to Square Inches Calculator isn’t just for math — it’s built for real-world use across many fields:
- 🏠 Flooring layouts and tiling projects — plan accurate coverage and material estimates.
- 🖨️ Printing and design measurements — convert layout sizes for paper and signage.
- 🏗️ Construction blueprints and fabric cuts — ensure precision in area planning.
- 📘 Educational geometry conversions — visualize how area scales between units.
Reverse Conversion (Square Inches to Square Feet)
Need to go the other way? Simply divide by 144 to convert square inches (in²) back to square feet (ft²).
Formula:
ft² = in² ÷ 144
Example: 1,440 in² ÷ 144 = 10 ft²
💡 Use this when you have area measurements in inches and need to compare or report them in square feet.
FAQs – Square Feet to Square Inches
1. How do you convert square feet to square inches?
Multiply the value in square feet by 144. Example: 5 ft² × 144 = 720 in².
2. Why multiply by 144 to get square inches?
Because 1 foot = 12 inches, and area is two-dimensional, so 12 × 12 = 144.
3. What is 1 square foot equal to?
One square foot equals exactly 144 square inches.
4. How many square feet is 12×12 inches?
12×12 inches = 144 in² → 144 ÷ 144 = 1 ft².
5. How to calculate sq ft in inches?
Multiply the two sides (in inches) to get in², then divide by 144 to convert to ft².
6. Can I use decimals or fractions?
Yes — the calculator supports both decimal and fractional inputs for precise results.
7. Is 1 square foot same as 144 square inches?
Exactly — both represent the same area, just in different units of measurement.
Related Tools + Final Note
- 🔁 Square Inches to Square Feet Calculator → for the reverse conversion.
- 📏 feet to inches calculator → for linear conversion.
- 📐 square root calculator → quickly finds √x, ³√x, and any nth root.
- 🧮 Rectangle Area Calculator → for rectangular layouts and dimensions.
🔗 More on area unit conversions — Wikipedia.