Square Footage Formula:
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Square footage is a measurement of area expressed in square feet (ft²). It represents the total surface area of a two-dimensional space and is commonly used in construction, real estate, and interior design to quantify the size of rooms, buildings, or land parcels.
The calculator uses the square footage formula:
Where:
Explanation: The calculator first converts any inches input to their decimal foot equivalent (1 inch = 1/12 foot), then multiplies length by width to calculate the total square footage.
Details: Accurate square footage calculation is essential for determining material quantities for flooring, painting, or tiling projects, calculating property values, planning space utilization, and complying with building codes and regulations.
Tips: Enter dimensions in feet and inches. For feet-only measurements, simply enter 0 in the inches fields. All values must be non-negative numbers.
Q1: How do I convert inches to decimal feet?
A: Divide the number of inches by 12. For example, 6 inches = 6/12 = 0.5 feet.
Q2: Can I calculate square footage for irregular shapes?
A: This calculator is designed for rectangular areas. For irregular shapes, break the area into smaller rectangles, calculate each separately, then sum the results.
Q3: How accurate should my measurements be?
A: For most purposes, measuring to the nearest inch is sufficient. For precise material estimation, consider measuring to the nearest 1/4 inch.
Q4: Does square footage include wall thickness?
A: Typically, interior square footage measurements are taken from the interior wall surfaces, excluding wall thickness.
Q5: How do I calculate square footage for multiple rooms?
A: Calculate each room separately using this calculator, then add the results together for the total square footage.