How much paint does 1 litre cover?

Coverage depends on paint type: emulsion covers ~10–12 m² per litre, exterior paint ~10 m² per litre, enamel ~12 m² per litre, and texture paint ~5 m² per litre for the first coat.

How many coats do I need for interior walls?

For interior walls: 1 coat of primer + 2 coats of emulsion is standard for new construction. For repainting, 2 coats of finish paint over existing painted surfaces is typical.

How do I account for doors and windows?

Standard door deduction: 1.8m × 0.9m = 1.62 m². Standard window: 1.2m × 1.0m = 1.2 m². Enter the count and the calculator deducts these areas automatically.

Paint Calculator

Calculate paint litres needed for any room.

Room length (m)

Room width (m)

Room height (m)

Doors (standard 1.8×0.9m)

Windows (standard 1.2×1.0m)

Number of coats

Paint type

Price per litre (₹)

Net paintable area

67.2 m²

Total area (all coats)

134.3 m²

Paint required

13.4 litres

Estimated cost

₹3358

Wall area: 54.0 m² · Ceiling: 20.0 m² · Deductions (doors + windows): 6.8 m²
Suggested cans: 3 × 4L + 2 × 1L (or adjust to available sizes)

Calculate paint quantity for any room

Enter room dimensions, number of doors and windows, paint type, and coats to get the exact litres needed and cost estimate.

Frequently asked questions

How much paint does 1 litre cover?: Coverage depends on paint type: emulsion covers ~10–12 m² per litre, exterior paint ~10 m² per litre, enamel ~12 m² per litre, and texture paint ~5 m² per litre for the first coat.
How many coats do I need for interior walls?: For interior walls: 1 coat of primer + 2 coats of emulsion is standard for new construction. For repainting, 2 coats of finish paint over existing painted surfaces is typical.
How do I account for doors and windows?: Standard door deduction: 1.8m × 0.9m = 1.62 m². Standard window: 1.2m × 1.0m = 1.2 m². Enter the count and the calculator deducts these areas automatically.

Calculate paint quantity for any room

Frequently asked questions

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