How much does a gallon cover?

A standard gallon typically covers 350-400 sq ft with a single coat.

Paint Coverage – Wall & Ceiling Calculation Service | CalcTools

Calculate how many gallons of paint you need for any room. Precision service for interior design.

A new coat of paint is the fastest way to transform a home, but nothing stops progress like running out of paint mid-wall. Our Paint Coverage service helps you find the 'sweet spot' for your order. By factoring in your wall area, the number of coats required, and standard coverage rates, we tell you exactly how many gallons or liters to buy, ensuring a perfect finish with zero waste.

Wall Area

Coats

Coverage (sq ft/gal)

Required Volume

2.86 gal

Approximately 2.86 gallons (10.82 liters) needed for 2 coats.

Wall Area500

Coats2

Coverage (sq ft/gal)350

How it Works

The tool calculates total surface area across all walls and applies your chosen number of coats. It then divides this gross coverage by industry-standard yield rates to provide a recommended purchase volume.

Calculation Formula

Paint = (Area × Coats) / Yield

Calculation Examples

1. **Accent Wall**: 100 sq ft, 2 coats = **0.5 gallons**.

Why use this tool in your daily life?

Cost-effective home improvement. This service ensures you bring home the right amount of paint every time, preventing the common mistake of buying expensive 'just-in-case' extra gallons that end up forgotten in the garage.