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Stain Calculator

Find Out How Much Stain Your Project Needs


Wondering how much stain you need to complete your DIY project? Our simple-to-use stain calculator helps you determine the right amount of stain for your project before you start staining. You can add as many walls as your project demands and even include the windows and doors to ensure an accurate estimation. Stop asking, "how much paint do I need?" Save time and money, while eliminating waste with our paint calculator. 

What are you staining?

Enter Measurements

Flat Surface 1

ft. long X ft. wide
Vertical Surface 1

ft. long X ft. high
Subtract Area of Openings

Doors windows

Your project is : 0 sq. ft.

The number of gallons you'll need will vary based on what product you use.


*Numbers are based on an approximate calculation.

How To Use

Using the calculator above is quick and easy. Follow these steps, calculate your quantity, and then confidently buy the right amount paint for your painting project.

Determine the right amount of paint for your project

  1. Measure the height and width of every wall or surface you wish to paint
  2. Use our "Add a Wall" feature to match the number of surfaces in the calculation to your number of measured surfaces
  3. Fill in the open boxes of each row (Wall 1...Wall 2...etc) with your measurements
  4. Enter the total number of windows and doors respectively
  5. Press the Calculate button
You will then have the option of selecting the number of coats you wish to apply. Some jobs, like covering older surfaces or walls previously painted with bright colors, require extra coats. Be sure to select the number of coats that applies to your project. Once calculated, you can move forward with your painting project! "How much paint do I need?" Now you know. 
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Variance in monitor calibrations can affect the on-screen representations of our actual paint and stain colors. Your local Olympic® Stains retailer can match and/or order the exact color that you desire with the help of the Olympic Stain color name or number.