1. What is Paint Calculation?

The paint calculation determines how many gallons of paint are needed to cover a given wall area, accounting for the paint's coverage rate and number of coats needed.

2. How Does the Calculator Work?

The calculator uses the paint calculation formula:

Where:

• Wall Area — Total square footage of walls to be painted
• Coverage per Gallon — How many square feet one gallon covers (typically 250-400 ft²)
• Number of Coats — How many layers of paint will be applied

Explanation: The formula calculates the exact amount needed then rounds up since paint is typically sold in whole gallons.

3. Importance of Accurate Paint Calculation

Details: Proper calculation prevents buying too much paint (wasting money) or too little (causing project delays). It also helps estimate project costs accurately.

4. Using the Calculator

Tips:

• Measure wall area accurately (length × height for each wall)
• Check paint can for exact coverage rate (varies by paint type)
• Typically 2 coats are needed for good coverage
• Add 10% extra for wastage if painting complex surfaces

5. Frequently Asked Questions (FAQ)

Q1: How do I calculate wall area?
A: Measure each wall's length and height, multiply to get area, then sum all walls. Subtract window/door areas.

Q2: What's typical coverage per gallon?
A: Most paints cover 250-400 ft² per gallon. Flat paints cover more than glossy ones.

Q3: Why round up to whole gallons?
A: Paint is sold in whole gallons, and having extra is better than running out mid-project.

Q4: Does this include ceilings?
A: No, this calculator is for walls only. Add ceiling area separately if needed.

Q5: How much extra should I buy for touch-ups?
A: Consider buying an extra quart or saving some paint from your project for future touch-ups.