SURFACES
Surfaces calculators
Interior surface materials sold by coverage: how much you need after waste, and how many boxes or sheets that comes to.
- Flooring calculatorWork out how much flooring to buy from a measured room. Adds your waste allowance, converts the total into boxes, and shows the formula behind it.
- Tile calculatorTurn a measured wall or floor into a tile box count. Set your own coverage per box and waste percentage, and see exactly how the total was reached.
- Drywall calculatorEstimate drywall sheets for a measured wall. Subtracts doors and windows, adds a waste allowance, and counts sheets at the coverage you enter.
How these estimates are produced
Every calculator here takes measurements you provide, applies a waste allowance you choose, and rounds up to whole packages because partial packages generally cannot be bought. No product coverage is assumed on your behalf — you enter the figure from the label or the supplier quote.