Paint Calculation Formula:
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The Paint Calculator estimates the amount of paint needed to cover a given area based on the paint's coverage rate. It helps prevent over- or under-purchasing paint for your project.
The calculator uses the formula:
Where:
Explanation: The formula divides the total area by the coverage rate to determine how many gallons of paint are needed.
Details: Accurate paint estimation saves money by preventing over-purchasing and ensures you have enough paint to complete your project without multiple trips to the store.
Tips: Measure your walls carefully, subtract areas not being painted (windows, doors). Standard paint coverage is about 350 ft² per gallon, but check your paint can for exact coverage.
Q1: How do I calculate wall area?
A: Measure length and height of each wall, multiply to get area, then add all wall areas together.
Q2: Does the calculator account for multiple coats?
A: No, multiply the result by the number of coats you plan to apply.
Q3: What's the average coverage per gallon?
A: Most paints cover 250-400 ft² per gallon. Flat paints cover more than glossy paints.
Q4: Should I buy extra paint?
A: It's wise to buy 10-20% extra for touch-ups and coverage inconsistencies.
Q5: How does surface texture affect coverage?
A: Rough textures may require 20-50% more paint than smooth surfaces.