This post was updated on January 18, 2023
Before staining a deck you need to figure out the deck’s total square footage. Once this calculation is considered, you can figure out how many gallons of deck stain you need by reading the coverage rate of the stain you are buying. On average most deck stains cover 150-300 sq. ft. per gallon (per coat) depending on the age, condition, and porosity of the wood.
Calculate Deck Stain Needed
This deck stain calculator will help you determine the proper amount of stain and prepping supplies needed to refinish your deck using most deck stain brands and types. This calculator is intended to provide you with an approximate estimate and varies by brand and type of stains. Best to always follow the manufacturer’s directions when it comes to applying.
The results will also include using the Restore-A-Deck Prepping supplies.
Restore-A-Deck Cleaner and Brightener
For more info, see this article: How Much Deck Stain Should I Buy
For the Best Deck stains, see here: The 7 Best Deck Stain Reviews
Wood Deck Stain Estimator

As an article and comment contributor to the site, Scott has been around the pressure washing industry since attending college. In 1993 he started his first company called Oakland Pressure Wash specializing in exterior pressure washing and deck staining. That company evolved into OPW L.L.C. shortly thereafter concentrating more on exterior wood and deck restoration. Scott and his Deck Cleaning Michigan company have restored over 10,000 decks in the Metro Detroit area since the early years. He has become an authority in the deck restoration industry and has contributed to numerous wood restoration forums and informative sites.
All the products he suggests through this site are sold through online sites and in retail stores, allowing the consumer to choose their own means of purchase. Scott’s eCommerce sites do sell many top brands he endorses and if you appreciate any of the help he has offered then feel free to purchase from one of them.