Should I round up per box or per tile?

This gives the total tile count needed; round up further to match your supplier's box quantity to avoid running short.

Tile Calculator

Calculate the number of tiles needed to cover an area, given the tile size and a waste allowance for cuts and breakage.

Inputs

Results

Try an example

Formula

Tiles = ceil((Area / Tile Area) × (1 + Waste%))

How Tile and Wallpaper Quantities Are Really Calculated

The area-plus-waste formula behind tile and wallpaper estimates, worked through with real room dimensions.

Planning a Home Renovation: Estimating Materials Before You Get a Quote

A walkthrough of estimating flooring, tile, and paint quantities for a renovation project before contacting a contractor.

Flooring Calculator

Calculate how many boxes of flooring you need for a room.

Paint Calculator

Calculate how many gallons of paint you need for a room.

Concrete Calculator

Calculate how much concrete you need for a slab, in cubic yards.

Gravel Calculator

Calculate how many tons of gravel you need for a driveway or path.

Roofing Calculator

Estimate the number of roofing squares and shingle bundles needed.

Brick Calculator

Estimate how many bricks you need for a wall.