Square Foot Formula:
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Square foot calculation converts measurements in inches to area in square feet. This is particularly useful in construction, interior design, and flooring projects where measurements are often taken in inches but area is needed in square feet.
The calculator uses the formula:
Where:
Explanation: Since 1 square foot equals 144 square inches, we divide the product of length and width by 144 to convert from square inches to square feet.
Details: Accurate area calculation is essential for determining material quantities, cost estimation, and space planning in various projects including construction, landscaping, and interior design.
Tips: Enter both length and width measurements in inches. All values must be positive numbers. The calculator will automatically convert to square feet.
Q1: Why divide by 144?
A: Because there are 144 square inches in one square foot (12 inches × 12 inches = 144 square inches).
Q2: Can I use this for circular areas?
A: No, this formula is for rectangular areas. For circles, use πr²/144 where r is the radius in inches.
Q3: How accurate is this conversion?
A: The conversion is mathematically exact. Any inaccuracy would come from measurement error of the original dimensions.
Q4: What if I have measurements in feet and inches?
A: Convert all measurements to inches first (1 foot = 12 inches), then use the calculator.
Q5: Can this be used for three-dimensional calculations?
A: No, this calculates area only. For volume, you would need a third dimension (height/depth).