How to Calculate Paint Quantity
Estimate paint litres from wall area and coverage.
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Quick answer
Paint quantity is area multiplied by coats, divided by coverage per litre. Add waste or extra allowance where needed.
Step-by-step
- Write down the values you already know.
- Use the correct formula and keep the units consistent.
- Calculate the result and check whether it makes practical sense.
Use the calculator
The easiest way to avoid mistakes is to use the related calculator and then review the formula shown on the page.
Common mistakes
- Using the wrong unit or percentage format.
- Rounding too early.
- Forgetting extra costs, waste, taxes, or allowances where they apply.
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