Home
Back
Square Feet Formula:
| From: | To: |
Square feet calculation converts measurements in inches to area in square feet. This is particularly useful in construction, interior design, and various measurement applications where imperial units are used.
The calculator uses the formula:
Where:
Explanation: The formula converts the area from square inches to square feet by dividing by 144, since there are 144 square inches in one square foot.
Details: Accurate area calculation is essential for determining material quantities, space planning, cost estimation, and project planning in various industries including construction, flooring, and landscaping.
Tips: Enter both length and width measurements in inches. All values must be valid positive numbers. The calculator will automatically convert to square feet.
Q1: Why divide by 144?
A: Because 1 square foot equals 12 inches × 12 inches = 144 square inches. Dividing by 144 converts square inches to square feet.
Q2: Can I use this for irregular shapes?
A: No, this calculator is designed for rectangular or square areas only. For irregular shapes, more complex calculations are needed.
Q3: What's the difference between square feet and square inches?
A: Square feet is a larger unit of area measurement. 1 square foot = 144 square inches. Square feet are typically used for larger areas like rooms, while square inches are used for smaller surfaces.
Q4: How accurate should my measurements be?
A: For most practical purposes, measurements to the nearest 1/4 inch (0.25) are sufficient. For precision work, measure to 1/16 inch (0.0625).
Q5: Can this calculator handle decimal inputs?
A: Yes, the calculator accepts decimal values for more precise calculations. You can input measurements like 12.5 inches or 36.75 inches.