Square Footage Formula:
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Square footage is a measurement of area expressed in square feet. It's commonly used in real estate, construction, and interior design to measure the size of a space.
The calculator uses the square footage formula:
Where:
Explanation: The formula converts area from square inches to square feet by dividing by 144 (since 12 inches × 12 inches = 144 square inches = 1 square foot).
Details: Accurate square footage calculations are essential for determining material quantities, space planning, property valuation, and compliance with building codes.
Tips: Enter length and width in inches. Measurements should be taken at the longest points for irregular shapes. For multiple areas, calculate each separately and sum the results.
Q1: Why convert from inches to square feet?
A: Many building materials and real estate measurements use square feet as the standard unit, while smaller measurements are often taken in inches.
Q2: How accurate should my measurements be?
A: For most purposes, measuring to the nearest 1/4 inch is sufficient. For precise work (like countertops), measure to 1/16 inch.
Q3: How do I calculate square footage for irregular shapes?
A: Divide the space into rectangular sections, calculate each separately, then sum the results.
Q4: Does this work for three-dimensional measurements?
A: No, this calculates area only. For volume (cubic feet), you would need height/depth measurements as well.
Q5: What's the difference between net and gross square footage?
A: Gross includes all space within the perimeter, while net excludes areas like walls and columns.