Square Footage Calculator

Measure the length and width (in feet) of each room, hallway, and enclosed area, multiply length by width for each room's square footage, then add all the individual room totals together for the whole house's square footage.

Yes, this calculator lets you add a row for each room with its length and width, calculates each room's individual square footage, and sums them into one running total — useful for flooring, painting, or listing a home's total living area.

Multiply the square footage by 0.092903 to get square meters. For example, 300 sq ft x 0.092903 = about 27.87 square meters. This calculator shows both units automatically.

Measure the length and width of each room in feet, multiply to get each room's square footage, then add up all rooms getting new flooring. Most flooring installers recommend adding 5-10% extra to your total to account for cuts, waste, and pattern matching.

For most real estate and flooring purposes, yes — any enclosed, finished, heated living space counts, including closets and hallways. Unfinished basements, garages, and porches are typically excluded from a home's official listed square footage.

Square yardage is used mainly for carpet and flooring materials sold by the square yard. To convert, divide your total square footage by 9 (since 1 square yard = 9 square feet).

For most DIY purposes (flooring, paint, furniture planning), measuring to the nearest inch or half-inch is sufficient. For anything with legal or financial implications (real estate listings, permits), consider having a professional appraiser or contractor measure and verify.

Yes — split an irregular room (like an L-shaped living room) into two or more rectangular sections, add each section as its own row, and the calculator will sum them into one total square footage for the space.