Square Feet Formula:
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Square feet calculation is the process of determining the area of a space in square feet. When measurements are taken in inches, we convert to square feet by dividing the total square inches by 144 (since 1 square foot = 144 square inches).
The calculator uses the square feet formula:
Where:
Explanation: This formula calculates the area in square inches first, then converts it to square feet by dividing by 144.
Details: Accurate area calculation is essential for flooring installation, painting, furniture placement, construction planning, and real estate valuation. Knowing the square footage helps in material estimation and cost calculation.
Tips: Enter length and width in inches. Make sure measurements are accurate and taken from the longest points. All values must be positive numbers greater than zero.
Q1: Why divide by 144?
A: Because 1 foot = 12 inches, so 1 square foot = 12 inches × 12 inches = 144 square inches.
Q2: Can I use this for irregular shaped rooms?
A: This calculator is for rectangular areas. For irregular shapes, divide the space into rectangular sections, calculate each separately, then sum the results.
Q3: What's the difference between square feet and square inches?
A: Square feet is a larger unit of area measurement. 1 square foot equals 144 square inches, making it more practical for room measurements.
Q4: How accurate should my measurements be?
A: For most purposes, measuring to the nearest inch is sufficient. For precise work like tile installation, measure to the nearest 1/4 inch.
Q5: Can I convert back to square inches?
A: Yes, multiply the square feet result by 144 to get back to square inches.