Home Project Calculators: Square Footage, Flooring, Tile and Paint

Most home projects start with the size of the room. Get the square footage first, then use it to estimate flooring, tile, or paint.

Pick the right calculator

• Square Footage CalculatorAdd up the square footage of one or more rooms or areas, with lengths in feet and inches, plus square meters, square yards, and material cost.
• room-area
• flooring
• tile
• Paint CalculatorEstimate how much wall paint you need from room size, coats, coverage, and openings.
• room-perimeter
• material-waste

Which one should I use?

• Use the Square Footage Calculator for several rooms at once, with lengths in feet and inches.
• Use the Room Area and Square Footage Calculator for circles and L-shaped rooms.
• Use the Flooring and Tile calculators to turn area into boxes or tiles, with extra for cuts.
• Use the Paint Calculator for walls, based on coats and coverage per gallon.
• Use the Room Perimeter Calculator for baseboard and trim.

Measuring tips

Measure wall to wall at floor level and round up to the nearest inch. For flooring, check the product’s box for its coverage and the extra it recommends for cuts, especially for diagonal layouts.