Deck Stain Calculator
Estimate deck and railing stain coverage, full gallons, purchased capacity and material cost from dimensions, coat count, product coverage and waste.
Default project preview
4 containers
Deck surface
192 ft²
Railing surface
240 ft²
Total coat area
864 ft²-coats
Order coverage
950.4 ft²-coats
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Surface area = deck top + two railing faces. Total coat area multiplies by coat count, then the allowance is applied before rounding containers up.
FAQ
Deck Stain Calculator questions
Why does old wood often use more stain?+
Weathered or porous wood can absorb more product than smooth, previously sealed boards.
Does this include board edges and stairs?+
No. Increase the allowance or add their measured surface area to the railing entry.
Should all stains receive two coats?+
No. Follow the product instructions; some penetrating stains are designed for a single coat.