Home
Back
Square Feet Formula:
| From: | To: |
The square feet calculation converts measurements in inches to square feet, which is a standard unit of area measurement used in construction, real estate, and various other applications.
The calculator uses the square feet formula:
Where:
Explanation: Since 1 square foot equals 144 square inches (12 inches × 12 inches), we divide the product of length and width by 144 to convert from square inches to square feet.
Details: Accurate area calculation is essential for determining material requirements in construction projects, calculating flooring needs, estimating painting coverage, and many other practical applications in both professional and DIY contexts.
Tips: Enter both length and width measurements in inches. All values must be valid positive numbers. The calculator will automatically convert the area to square feet.
Q1: Why divide by 144 in the formula?
A: Because 1 square foot equals 144 square inches (12 inches × 12 inches), so dividing by 144 converts from square inches to square feet.
Q2: Can I use this calculator for metric measurements?
A: No, this calculator is specifically designed for inches to square feet conversion. For metric conversions, you would need a different calculator that handles centimeters or meters to square meters.
Q3: How precise should my measurements be?
A: For most practical applications, measuring to the nearest 1/8 inch (0.125) is sufficient, but for precision work, you may want to measure to 1/16 inch (0.0625) or smaller increments.
Q4: What if I have an irregular shape?
A: This calculator works for rectangular areas only. For irregular shapes, you would need to break the area down into rectangular sections, calculate each separately, then sum the results.
Q5: Can this be used for three-dimensional calculations?
A: No, this calculator is for two-dimensional area calculations only. For volume calculations (cubic feet), you would need to incorporate a third dimension (height/depth).