Room Size Calculator

Best uses

• Plan paint, rugs, furniture clearance, storage, and rough moving supply needs.
• Measure irregular rooms as multiple rectangles, then add the areas together.
• Use perimeter as a helper for trim, baseboards, and wall planning, not as a final material quote.

Measurement tips

• Measure at floor level for rugs and flooring, then separately measure wall height for paint.
• Sketch closets, alcoves, bump-outs, and bay windows before adding them to the main rectangle.
• For furniture planning, subtract swing paths for doors, appliance doors, drawers, and walkways instead of relying on square footage alone.

Practical examples

• Measure a living room before buying a rug so walkways, door swings, and furniture clearance are not guessed from square footage alone.
• Split an L-shaped bedroom into two rectangles, add both areas, then use the perimeter as a baseboard or paint-planning helper.
• Use the room count option for similar bedrooms, but measure kitchens, bathrooms, closets, and alcoves separately.

FAQ