Square Feet Formula:
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This calculator converts area measurements from square inches to square feet. It's commonly used in construction, interior design, and real estate to determine the area of spaces when measurements are taken in inches.
The calculator uses the following formula:
Where:
Explanation: The formula first calculates the area in square inches by multiplying length by width, then converts to square feet by dividing by 144.
Details: Accurate area calculation is essential for determining material quantities, space planning, cost estimation, and property valuation.
Tips: Enter both length and width in inches. Measurements should be taken at the longest/widest points for irregular shapes. For multiple areas, calculate each separately and sum the results.
Q1: Why divide by 144?
A: There are 144 square inches in one square foot (12 inches × 12 inches).
Q2: Can I use this for circular areas?
A: No, this is for rectangular areas. For circles, use πr²/144 where r is radius in inches.
Q3: How accurate should my measurements be?
A: For most purposes, measuring to the nearest 1/4 inch is sufficient. For precise work, measure to 1/8 inch or less.
Q4: What if my area isn't rectangular?
A: Break irregular shapes into rectangles, calculate each separately, then sum the results.
Q5: How do I convert back to square inches?
A: Multiply square feet by 144 to get square inches.