Square Footage Calculator

What is Square Footage?

Square footage is a measurement of area expressed in square feet. One square foot is equal to a square that is one foot on each side. It's commonly used in real estate, construction, and home improvement to describe the size of rooms, houses, properties, and materials.

Why Calculate Square Footage?

Calculating square footage is important for many reasons:

• Determining property value and price per square foot
• Planning renovations and estimating material costs
• Sizing HVAC systems, flooring, paint, and other materials
• Meeting building code requirements
• Calculating property taxes

How to Measure Square Footage

To measure square footage accurately:

1. Use a tape measure, laser measure, or measuring wheel
2. Measure the length and width of the space in feet (or convert from other units)
3. For rectangular spaces, multiply length by width
4. For irregular spaces, divide the area into regular shapes, calculate each separately, and add them together
5. For circular areas, use the formula: Area = π × radius²
6. For triangular areas, use the formula: Area = (base × height) ÷ 2

Square Footage Formulas

Common Conversion Factors

Tips for Accurate Measurements

• Measure to the nearest 1/8 inch or 0.01 foot for precision
• For rooms, measure from the inside of the walls
• For properties, measure from the outside of the exterior walls
• Exclude areas that aren't considered living space (unfinished basements, garages, etc.) when calculating home square footage
• For complex shapes, create a floor plan and divide the space into simple geometric shapes
• Double-check all measurements and calculations

Applications of Square Footage Calculations