Practical calculator

Paint calculator

Estimate paint litres from wall area, openings, coats and product coverage.

Enter measurements

Measure in metres
Measure in metres
Total area not painted
Typically 2 coats
Check product label
Waste and defects
Calculations run on your device. Measurements are not sent to our server.

Your result

Enter dimensions to see the result here.

How it works

Subtract openings from wall area, multiply by the number of coats, divide by the stated coverage and add the selected reserve.

Before buying

Use the coverage shown on the actual product label. Porous surfaces and colour changes may use more paint.

How accurate is the result?

This calculator provides an estimate based on your inputs. Check actual measurements, product specifications and installation instructions before buying. Consult qualified professionals for structural safety.