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Paint Formula:
The Interior Paint Calculator helps you determine the exact amount of paint needed for your interior painting project. It calculates the required paint in litres based on the area to be painted, the paint's coverage rate, and the number of coats required.
The calculator uses the paint calculation formula:
Where:
Explanation: The formula divides the total area by the paint's coverage rate to get the paint needed for one coat, then multiplies by the number of coats for the total requirement.
Details: Accurate paint calculation prevents wastage, saves money, and ensures you have enough paint to complete your project without interruptions. It also helps in proper budgeting and planning.
Tips: Measure the total wall area accurately. Check the paint can for coverage rate (typically 10-12 m²/litre for interior paints). Consider adding 10% extra for wastage and touch-ups.
Q1: How do I calculate wall area?
A: Measure height and width of each wall, multiply to get area, then add all wall areas together. Subtract areas of windows and doors.
Q2: What is a typical coverage rate for interior paint?
A: Most interior paints cover 10-12 m² per litre, but this varies by paint type and surface texture.
Q3: How many coats are usually needed?
A: Most projects require 2 coats for good coverage. Dark colors over light may need 3 coats.
Q4: Should I buy extra paint?
A: Yes, add 10-15% extra for touch-ups and wastage. Keep some for future repairs.
Q5: Does surface texture affect coverage?
A: Yes, rough surfaces require more paint than smooth surfaces for the same area.