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Square Feet Formula:
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Square feet (SF) is a unit of area measurement used primarily in the United States and other countries that utilize the imperial system. It represents the area of a square with sides measuring one foot in length.
The calculator uses the square feet formula:
Where:
Explanation: The calculator converts any inches input to decimal feet (inches ÷ 12) before performing the multiplication to get the total square footage.
Details: Square footage calculation is essential for various applications including real estate, construction, flooring installation, painting projects, and landscaping. Accurate measurements help in material estimation, cost calculation, and space planning.
Tips: Enter length and width measurements 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 feet for calculation?
A: Divide inches by 12 to convert to decimal feet. For example, 6 inches equals 0.5 feet.
Q2: Can I calculate square feet for irregular shapes?
A: This calculator is designed for rectangular areas. For irregular shapes, break the area into rectangular sections, calculate each separately, then sum the results.
Q3: How accurate are square feet calculations?
A: Accuracy depends on the precision of your measurements. Always measure twice for important projects and consider adding a waste factor for materials.
Q4: What's the difference between square feet and linear feet?
A: Square feet measures area (length × width), while linear feet measures length only. Linear feet is used for materials sold by length, such as molding or fencing.
Q5: How do I convert square feet to other area measurements?
A: 1 square foot equals 144 square inches, 0.0929 square meters, or approximately 0.00002296 acres.