Square Feet Formula:
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The square feet formula converts area measurements from square inches to square feet. Since 1 square foot equals 144 square inches (12 inches × 12 inches), this conversion is essential for various applications in construction, interior design, and flooring.
The calculator uses the formula:
Where:
Explanation: Multiply length by width to get area in square inches, then divide by 144 to convert to square feet.
Details: Accurate area calculation is crucial for determining material quantities, cost estimation, space planning, and project budgeting in construction and interior design projects.
Tips: Enter length and width measurements in inches. Both values must be positive numbers. The calculator will automatically convert to square feet.
Q1: Why divide by 144?
A: Because 1 square foot = 12 inches × 12 inches = 144 square inches. Dividing by 144 converts square inches to square feet.
Q2: Can I use this for circular areas?
A: No, this formula is for rectangular areas. For circles, use: Area = π × radius² (then divide by 144 for square feet).
Q3: What's the difference between square feet and square inches?
A: Square feet is a larger unit (1 sq ft = 144 sq in). Square inches are better for small areas, while square feet are standard for room measurements.
Q4: How accurate should my measurements be?
A: For most projects, measure to the nearest 1/4 inch. For precision work, measure to the nearest 1/16 inch.
Q5: Can I convert square feet back to square inches?
A: Yes, multiply square feet by 144 to get square inches.