Interior Paint Calculator

How much paint do you need?

Have you ever been "almost done" painting, and realized you didn’t quite have enough paint to finish the job? Fill in the blanks below, and click 'Calculate' to calculate the right amount of paint for your project.

Interior Paint Calculator
Calculate how much paint you need for any room in your house

Exterior Paint Calculator
Calculate how much paint you need to paint the outside of your house
Room Perimeter
Measure around the base of each of the walls in the room and add all the lengths together. Be sure to include door and window areas.
Feet
Inches

Wall Height
Measure the height of the tallest wall in the room.
Feet
Inches

Number of Doors
Count the individual number of single and double doors in the room that *will not* be painted.
Single

20 sq feet
Double

40 sq feet

Number of Windows
Count the individual number of large and small windows in the room. Count multiple times for very large bay windows.
Small

10 sq feet
Large

25 sq feet


Total Gallons Required



My Swatches

Drag and drop your favourite to create your own unique CIL color palette

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