Home
Back
Paint Coverage Formula:
The Interior Paint Coverage Calculator estimates the amount of paint needed to cover interior surfaces based on the area to be painted, the paint's coverage rate, and the number of coats required.
The calculator uses the paint coverage formula:
Where:
Explanation: The formula calculates the total paint needed by dividing the area by the coverage rate and multiplying by the number of coats.
Details: Accurate paint calculation helps avoid purchasing too much or too little paint, saving money and ensuring project completion without interruptions.
Tips: Measure the total wall area accurately, check the paint can for coverage specifications, and consider the surface type and color when determining the number of coats needed.
Q1: How do I calculate wall area?
A: Measure the length and height of each wall, multiply to get area, and sum all wall areas. Subtract windows and doors if significant.
Q2: What is a typical paint coverage rate?
A: Most quality paints cover 350-400 square feet per gallon, but this varies by paint type and surface texture.
Q3: How many coats are usually needed?
A: Most projects require 2 coats for even coverage and color consistency, especially when changing colors dramatically.
Q4: Should I buy extra paint?
A: Yes, purchase 10-15% extra for touch-ups and future repairs. Store unused paint properly for later use.
Q5: Does surface texture affect coverage?
A: Yes, textured surfaces like stucco or brick require more paint than smooth surfaces due to increased surface area.