Paint Calculator
Estimate paint, coverage and costs for your next project.
Use our free paint calculator to find out how much paint to buy, how much area your paint will cover, and your estimated painting budget.
Paint Calculator
Choose a mode and enter your project details.
Results
Estimated quantities for your project.
Estimates depend on the product coverage rate and surface conditions.
How Paint Calculation Works
Paint quantity depends on the surface area, the product's coverage rate, and the number of coats. A small extra allowance helps account for texture, application method and touch-ups.
Key Factors
- Surface type and texture
- Paint type and finish
- Manufacturer coverage rate
- Number of coats
- Application method
- Color change and primer
Tips for Accurate Results
- Read the actual coverage rate on the paint can.
- Include the full area of walls and ceilings.
- Allow for a second coat when needed.
- Consider textured or porous surfaces.
- Keep paint from the same batch for touch-ups.
Popular Paint Guides
How to Calculate Paint for a RoomStep-by-step guide and examples.›
How Much Does Paint Cost?A complete guide to paint prices.›
Interior vs. Exterior PaintKnow the differences.›
Paint Coverage ExplainedUnderstanding coverage rates.›
Frequently Asked Questions
How many square feet does a gallon of paint cover?
Many paints specify a coverage range around 300–400 square feet per gallon for a single coat, but check your exact product label.
Should I plan for two coats?
Two coats are common for an even finish. The ideal number depends on the old and new colors, paint type and surface.
How much extra paint should I buy?
An allowance around 10–15% can be a useful planning starting point, depending on surface and application.