Finishing Calculators

How Much Paint Do You Need? A Room Painting Guide

Paint quantity is your net wall area (total wall area minus doors, windows, and other openings) multiplied by the number of coats, divided by the paint's coverage rate, plus a wastage allowance — skipping the openings deduction or the multi-coat multiplication are the two most common ways people over- or under-buy paint.

How Tile Quantity Is Calculated (Why Smaller Tiles Need Far More Pieces)

Tile quantity comes from dividing the room's area by each tile's individual face area, plus a wastage allowance for cuts and breakage — and because area scales with the square of a tile's side length, halving a tile's size roughly quadruples the number of pieces needed to cover the identical floor.

Tile vs Flooring Material Quantity: Piece Count vs Area Ordering

Tile and paver quantities are calculated as a piece count (room area divided by each unit's face area), while laminate, vinyl, and carpet are ordered by total area with wastage built in directly — the two material types are sold and estimated in genuinely different units, and using the wrong estimation method for a given material produces a nonsensical order quantity.