application

Interior Wall Paint Calculator

Calculate how much paint you need for interior walls based on room dimensions and paint type.

Back to Paint Calculator

Project Setup

Configure your painting project

Measurement System

Choose your preferred unit system

Walls & Ceiling

Enter dimensions of surfaces to be painted

Wall 1 Length

Length of wall

Wall 1 Height

Height of wall

Include Ceiling

Check if you will be painting the ceiling

Paint Details

Specify paint type, finish, and application

Paint Type

Type of paint you will be using

Paint Finish

Finish/sheen of the paint

Number of Coats

How many coats of paint you plan to apply

coats

Paint Coverage

Coverage rate from the paint can label (auto-calculated based on type/finish)

sq ft/gal

Waste Factor (%)

Percentage to add for spills, touch-ups, and uneven application

Primer Calculation

Add primer to your calculation

Additional Factors

Factors that affect paint requirements

Color Change

How dramatic is the color change (affects recommended coats)

Surface Condition

Condition of the surface to be painted (affects coverage)

Cost Estimation

Optional cost calculation

Paint Calculator Tips

Click to show tips

Try an Example

Pick a scenario to see how the calculator works, then adjust the values

Master Bedroom

A typical master bedroom with 4 walls, a ceiling, and one window.

Key values: 14 x 8 ft walls · 2 coats latex eggshell · 1 window

Living Room

A spacious living room with large walls and two windows.

Key values: 18 x 9 ft walls · 2 coats satin · 2 windows

Accent Wall

A single accent wall with a dramatic color change requiring extra coats.

Key values: 12 x 8 ft wall · 3 coats, dark-to-light · With primer

Related application Variants

Explore more application options

Ceiling

Ceiling Paint Calculator | Estimate Ceiling Paint Needed

Use this calculator

Exterior

Exterior Paint Calculator | House Exterior Paint Estimator