Paint Calculator

A paint calculator estimates the number of litres needed to cover walls and ceilings based on room dimensions and paint coverage rates. Most standard emulsions cover 10–14m² per litre; masonry and exterior paints typically cover less (8–10m² per litre)

The calculator uses the standard published formula for paint. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches, square metres, litres. You can enter values in the units shown — the calculator handles all conversions internally.

The calculator applies the standard formula for this type of calculation. See the 'How It Works' steps above for the detailed formula breakdown.