1. What is a Paint Calculator by Area and Coverage?

Definition: This calculator estimates the amount of paint needed based on the surface area to be painted and the paint's coverage rate.

Purpose: It helps homeowners, painters, and contractors determine how much paint is required for a painting project.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P \) — Paint required (liters)
• \( A \) — Surface area (square meters)
• \( C \) — Paint coverage (square meters per liter)

Explanation: The surface area is divided by the paint's coverage rate to determine how many liters of paint are needed.

3. Importance of Paint Calculation

Details: Accurate paint estimation prevents over-purchasing (waste) or under-purchasing (project delays), and ensures consistent color application.

4. Using the Calculator

Tips: Enter the total surface area in square meters and the paint coverage rate (default 10 m²/L). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a typical paint coverage rate?
A: Most paints cover about 10 m² per liter, but this varies by paint type, surface texture, and application method.

Q2: Should I account for multiple coats?
A: Yes, multiply the result by the number of coats needed (typically 2 for good coverage).

Q3: How do I measure surface area?
A: Calculate wall areas as height × width, then sum all surfaces to be painted.

Q4: Does this include doors and windows?
A: No, you should subtract door/window areas from your total wall area.

Q5: Should I buy extra paint?
A: Yes, consider purchasing 10-15% more than calculated for touch-ups and wastage.