Paint calculator
Work out how many litres of paint a room needs, then the best mix of 10 L, 4 L and 1 L cans.
Your measurements
How it's worked out
Wall area = perimeter × height − 1.7 m² per door − 1.5 m² per window. Litres = area × coats ÷ coverage, plus 10%. Cans are picked to waste the least paint.
Estimates only. Check sizes, coverage and quantities with your supplier, engineer or certifier before ordering. Standards references are a guide, not compliance advice.
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