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Construction Calculators

Deck Stain Calculator

Calculate how many gallons of stain or sealer are needed to cover a deck, including multiple coats.

ft
ft
sq ft
Solid stains cover about 150-200 sq ft/gal; transparent stains cover about 200-300 sq ft/gal.
Deck area —
Gallons needed —
Ad Space — 300×250

About the Deck Stain Calculator

This calculator estimates how much stain or sealer you need to finish a deck, based on its square footage, the number of coats you plan to apply, and your product's coverage rate.

Formula: Deck Area = Length × Width; Gallons Needed = (Deck Area × Coats) ÷ Coverage per Gallon

Rough, weathered or new pressure-treated wood soaks up more stain than smooth wood, so budget toward the lower end of the coverage range on first applications, and always let a second coat penetrate a fully dry surface.

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