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Paint Formula:
The Bunnings Paint Calculator Interior helps estimate the amount of paint needed for interior painting projects. It calculates the required litres of paint based on the area to be painted, the paint's coverage rate, and the number of coats needed.
The calculator uses the paint formula:
Where:
Explanation: The formula divides the total area by the paint's coverage rate to determine the paint needed per coat, then multiplies by the number of coats for the total requirement.
Details: Accurate paint calculation helps avoid purchasing too much or too little paint, saves money, reduces waste, and ensures you have enough paint to complete your interior painting project efficiently.
Tips: Measure the total wall area accurately, check the paint can for coverage specifications, and consider the surface type and color changes when determining the number of coats needed.
Q1: How do I calculate the area to be painted?
A: Measure the length and height of each wall, multiply to get square metres, then add all wall areas together. Subtract areas for windows and doors.
Q2: What is a typical paint coverage rate?
A: Most interior paints cover 10-12 square metres per litre, but this varies by paint quality, surface texture, and application method.
Q3: How many coats are usually needed?
A: Most interior projects require 2 coats for even coverage and color consistency, especially when changing from dark to light colors.
Q4: Should I buy extra paint for touch-ups?
A: Yes, it's recommended to purchase 10-15% extra paint for touch-ups and future repairs.
Q5: Does this calculator work for ceilings and trim?
A: Yes, but calculate these areas separately as they may require different paint types or application methods.