Square Footage Calculator

Square Footage Calculator

Calculate the total square footage of your space with multiple room shapes. Perfect for real estate, construction, and home improvement projects.

Quick Room Sizes

Add New Room

• Add multiple rooms to calculate total area

• Choose from rectangle, circle, triangle, or L-shape

• All measurements in feet

Cost Calculator (Optional)

Enter cost per sq ft for total cost calculation

About Square Footage Calculator

Our comprehensive square footage calculator helps you determine the total area of any space by adding up individual room areas. Whether you're planning renovations, estimating construction costs, or evaluating real estate, this tool provides accurate area calculations with multiple unit conversions.

What It Calculates

  • Total Square Footage: Combined area of all rooms and spaces
  • Multiple Unit Conversions: Square feet, meters, yards, and acres
  • Cost Estimates: Total project cost based on area and cost per square foot
  • Room-by-Room Breakdown: Individual area calculations for each space
  • Complex Shapes: Support for rectangles, circles, triangles, and L-shapes

Supported Room Shapes

Basic Shapes
  • Rectangular rooms (length × width)
  • Square rooms (side × side)
  • Circular rooms (π × radius²)
  • Triangular rooms (½ × base × height)
Complex Shapes
  • L-shaped rooms (multiple rectangles)
  • Irregular shapes (decomposed into parts)
  • Rooms with alcoves or cutouts
  • Multi-level spaces

Understanding Your Results

Area Units

Square feet, meters, yards, and acres

Cost Estimates

Total project cost calculations

How to Use

Add rooms one by one, selecting the appropriate shape and entering dimensions. For irregular shapes, break them down into simpler geometric forms. The calculator will automatically sum all areas and provide conversions between different units.

Common Applications

  • Home Renovations: Calculate flooring, paint, and material needs
  • Real Estate: Evaluate property size and value
  • Construction: Estimate material quantities and costs
  • Interior Design: Plan furniture layouts and space utilization
  • Property Management: Track rental property dimensions
  • Insurance: Determine coverage amounts based on area

Area Conversion Factors

1 square foot =

  • 0.0929 square meters
  • 0.1111 square yards
  • 0.000023 acres

1 square meter =

  • 10.764 square feet
  • 1.196 square yards
  • 0.000247 acres

Pro Tips for Accurate Measurements

  • Measure Twice: Double-check all dimensions for accuracy
  • Include All Spaces: Don't forget closets, hallways, and utility areas
  • Account for Obstacles: Consider columns, built-ins, and structural elements
  • Use Consistent Units: Stick to one unit system throughout
  • Round Appropriately: Use reasonable precision for practical applications
Pro Tip

For complex floor plans, break down irregular shapes into simple geometric forms. Measure from wall to wall at the widest points, and remember that square footage calculations are typically based on interior dimensions unless specified otherwise.