Paint Calculator

Paint Calculator

Calculate how much paint you need for walls, ceilings, doors, windows, and multiple rooms. Enter your measurements to get an estimate of the paint needed for your project.

Paint Calculator for a Room

Use the paint calculator to estimate the amount of paint needed for a room. Enter the room length, width, and wall height. You can also account for doors and windows that do not need to be painted.

Paint Calculator by Square Feet

The amount of paint you need depends on the total area being painted. This calculator uses your measurements to estimate the square footage and the amount of paint required.

How Much Paint Do I Need?

The amount of paint needed can vary based on room size, wall height, the number of coats, and paint coverage. Rough or textured walls may also require more paint than smooth surfaces.

For a more accurate estimate, measure your walls carefully and include doors and windows when appropriate.

Paint Calculator for Walls and Ceilings

You can use the calculator for walls and ceilings as part of the same project. If you plan to paint the ceiling, include its measurements so the estimate covers the additional area.

Paint Calculator for Multiple Rooms

Painting more than one room? Enter each room separately to estimate the total paint needed for your project.

Paint Coverage Calculator

Paint coverage varies by product and surface. Check the coverage information on your paint can and use it with the calculator for a more useful estimate.

Paint Cost Calculator

Knowing the amount of paint needed can also help you estimate your project cost. Enter the price of the paint you plan to buy to get an estimated paint cost.

Tips for a Better Paint Estimate

• Measure each room carefully before using the calculator.
• Include doors and windows if those areas will not be painted.
• Check the paint manufacturer's coverage information.
• Consider the number of coats you plan to apply.
• Rough or textured surfaces may require more paint.
• Keep some extra paint for future touch-ups.

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