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What sheen do I need?
8 Oz. Sample
1 Gallon
1 Quart
5 Gallon
The following product(s) is required to properly prep and pre-treat wood prior to any stain project.
Required product
BEHR PREMIUM ALL-IN-ONE WOOD CCCC
$0.00
The following product(s) is required to properly prep and pre-treat wood prior to any stain project. Only available in store at Home Depot.
Required 3rd party product
BEHR PREMIUM ALL-IN-ONE WOOD CCCC
The 9 in. x 1/4 in. Polyester Adhesive Roller Cover has a hard texture, making it ideal for applying all types of adhesives to smooth surfaces. It can be used for stippling and applying sand paints.
The following product(s) is recommended when stripping is needed.
$0.00
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12 ft. guide for how much paint is needed

Determine How Much Interior Paint to Buy

12 ft. guide for how much paint is needed

Figuring out how much paint to buy doesn't have to be tricky. It's important to purchase enough paint to complete your project, but not have a large amount of paint leftover.

For Best Results:

Some BEHR® products, such as Chalk Paint, have unique application techniques and may require different amounts of product. Consult the back of the label for specifics.

For very small or very large quantities of paint, BEHR paint can be purchased in quarts or five gallon pails, in addition to the standard one gallon size.

  1. Thumbnail image of behr paint calculator

    Step 1

    One gallon of Interior BEHR ULTRA® SCUFF DEFENSE Paint and Primer, or BEHR PREMIUM PLUS® is enough to cover 250 to 400 Sq. Ft. of surface area with one coat.
     

    To determine how much paint you'll need for your project, follow the steps outlined below or use the handy paint calculator on behr.com .

  2. Sketch of interior corner of room

    Step 2

    To estimate the size of the wall area, first measure the perimeter of the entire room. Next, measure the height of your wall. Multiply the perimeter measurement by the height of the room.


    Subtract the doors and windows from your measurement. For reference, an average window is 15 square feet and the average door is 20.

  3. Close up mage of interior room trim

    Step 3

    For trim , measure the total length of trim for all expanses: baseboard, door, window and molding. The average trim width is six inches, so multiply your trim length by 0.5 feet to get a square footage estimate for trim.


    If you are painting the ceiling along with your walls, follow these simple steps and add the ceiling size to your total room square footage. First measure the room's width then the room's length. Multiply the width and the length measurements to determine the total ceiling area.

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