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Painting & Walls calculators

Paint coverage and wall finish calculators.

Wall and Ceiling Paint Calculator AustraliaEnter room dimensions in metres to get separate two-coat takeoffs for wall and ceiling paint. Wall openings are deducted, the ceiling uses length × width, and each finish has editable coverage, can size, and price.

How these painting & walls calculators work

Each calculator starts from site measurements in metres and millimetres, converts them with a tested formula, shows the exact quantity and your waste allowance as separate lines, then rounds up to the package or order unit you actually buy. Prices are optional and always entered by you, so the estimate reflects your supplier rather than a national average.

Painting & Walls measuring guides

Step-by-step guides with worked examples and reference tables for Australia.

How Much Paint Do I Need? (Australia, Litres per m²)How much paint do I need? Measure walls in m², double for two coats, divide by the can's 12–16 m² per litre, round up to 4 L or 10 L cans. Room tables inside.