Home
Back
Square Footage Formula:
| From: | To: |
Square footage calculation is the process of determining the area of a space in square feet. When working with measurements in inches, we convert to square feet by dividing the product of length and width by 144 (since 1 square foot = 144 square inches).
The calculator uses the formula:
Where:
Explanation: This formula converts an area measured in square inches to square feet, which is the standard unit for measuring floor space, property area, and other large surfaces.
Details: Accurate square footage calculation is essential for real estate valuation, construction projects, flooring installation, painting estimates, and space planning. It helps determine material quantities and project costs.
Tips: Enter both length and width measurements in inches. Ensure measurements are accurate and taken at the longest points for irregular shapes. All values must be positive numbers.
Q1: Why divide by 144?
A: There are 144 square inches in one square foot (12 inches × 12 inches = 144 square inches).
Q2: Can I use this for irregularly shaped rooms?
A: For irregular shapes, divide the space into rectangular sections, calculate each separately, then sum the results.
Q3: How accurate should my measurements be?
A: For most purposes, measuring to the nearest 1/4 inch is sufficient. For precision work, measure to 1/8 inch or finer.
Q4: Does this work for three-dimensional measurements?
A: No, this calculator is for area (2D) only. For volume calculations, you would need height measurements as well.
Q5: What if I have measurements in feet and inches?
A: Convert all measurements to inches first (1 foot = 12 inches), then use the calculator.