Paint calculator
How much paint do you need? Enter room dimensions and coating preferences to get litres required and tin count. Based on 10 m²/litre standard coverage.
Inputs
Number of coats
Results
Paint needed (2 coats)
Enter your measurements to see the result
litres
Wall area
—
m²
4 L tins
—
tins
10 L tins
—
tins
Coverage rate
10
m² per litre
⚠ Based on 10 m²/L coverage. Rough or porous surfaces may need 20% more. Windows and doors are not deducted, which leaves a small margin for waste.
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Frequently asked questions
How much paint do I need for a room?
Calculate the total wall area (2 × (length + width) × height), then divide by the coverage rate (typically 10 m² per litre). Multiply by the number of coats needed.
How many coats of paint do I need?
Most walls need 2 coats for even coverage, especially when changing colors significantly. A single coat may suffice for touch-ups or when using the same color.
How much area does 1 litre of paint cover?
On average, 1 litre of paint covers about 10 m² per coat, though this varies by paint type, surface texture, and application method.
Should I subtract windows and doors from paint calculations?
For more accurate estimates, subtract the area of large windows and doors. However, many people skip this since it provides a small buffer for touch-ups.