Page 3 of the Tile Calculators archive. Return to page one for the full tag description.
For a causes-and-fixes approach, use consistent units and real package coverage, yield, rate or vehicle data, keep full precision through the math, and round only when converting to a usable quantity. The goal is to confirm.
For this “what to check first” angle, use consistent units and real package coverage, yield, rate or vehicle data, keep full precision through the math, and round only when converting to a usable quantity. The goal is.
Calculate the tiled area, multiply by 1.10 for a 10% waste allowance and divide by the coverage per box or tile. Round up to whole packages and use a larger allowance for diagonal or complex layouts.
Use home size only as a starting point, then adjust for books, kitchenware, closets, garage storage and how long you have lived there. Inventory is more accurate than bedroom count alone.