Square Feet Formula:
From: | To: |
Square feet (sq ft) is a unit of area measurement used primarily in the United States and other countries that use the imperial system. It represents the area of a square with sides measuring one foot each.
The calculator uses the simple area formula:
Where:
Explanation: This formula calculates the area of a rectangular space by multiplying the length by the width.
Details: Calculating square footage is essential for various applications including real estate valuation, construction planning, flooring installation, painting estimates, and space planning for interior design.
Tips: Enter both length and width measurements in feet. Ensure measurements are accurate and in the same unit (feet). For irregular shapes, divide into rectangular sections and calculate each separately.
Q1: Can I use different units for length and width?
A: No, both measurements must be in the same unit (feet) for accurate square footage calculation. Convert all measurements to feet first.
Q2: How do I calculate square feet for irregular shapes?
A: Divide the irregular shape into smaller rectangular sections, calculate each area separately, then sum all the areas together.
Q3: What's the difference between square feet and linear feet?
A: Square feet measures area (two dimensions), while linear feet measures length (one dimension).
Q4: How accurate should my measurements be?
A: For most applications, measurements to the nearest 1/4 inch or 0.01 foot are sufficient. For precise work, measure to 1/8 inch or 0.001 foot.
Q5: Can this calculator be used for circular areas?
A: No, this calculator is designed for rectangular areas. For circles, use the formula: π × radius² (then convert to square feet if needed).