Construction/Home calculator
Paint Calculator Material Estimator
Estimate paint needed from wall area, coverage per liter, and number of coats.
FormulaPaint needed = wall area x coats / coverage per liter
Formula
Paint quantity formula
Paint coverage varies by surface texture, primer, color change, and application method.
Paint needed = wall area x coats / coverage per liter
80 sq m at 10 sq m per liter for 2 coats needs about 16 liters.
FAQ6 common questions for this calculator.
FAQs
Should I include doors and windows?+
For a closer estimate, subtract large openings from wall area.
Should I buy extra paint?+
A small allowance helps cover touch-ups, waste, and uneven surfaces.
How does the Paint Calculator calculate the result?+
For the Paint Calculator, it uses the Paint quantity formula: Paint needed = wall area x coats / coverage per liter. 80 sq m at 10 sq m per liter for 2 coats needs about 16 liters.
What information do I need to use the Paint Calculator?+
Enter the paintable wall area, the coverage rate shown on the chosen paint, and the number of coats. Use one unit system throughout; the calculator shows the formula result and a separate 10% planning buffer.
How accurate is the Paint Calculator?+
The paint estimate uses the wall area, number of coats, and coverage rate you enter. It shows a separate 10% planning buffer, but it does not subtract doors or windows, select a paint product, or round the result to available tin sizes.
What should I check before using the Paint Calculator result?+
Check that wall area already excludes any openings you do not intend to paint, and use the coverage rate printed on the chosen paint for the surface and application method. Compare the buffered total with available tin sizes before buying.
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Construction/Home guide
How to use the Paint Calculator
Estimate paint needed from wall area, coverage per liter, and number of coats. The page also explains the paint quantity formula and shows a practical example: 80 sq m at 10 sq m per liter for 2 coats needs about 16 liters.
- 1
Enter your details
Enter wall area, coverage per liter, and number of coats, then complete any other fields shown in the calculator.
- 2
Check the calculation
Review the result alongside the paint quantity formula: Paint needed = wall area x coats / coverage per liter.
- 3
Compare scenarios
Change one or more inputs to see how they affect the paint Calculator result before you use the estimate.