Deck Stain Calculator

How to calculate

Length and width cover the deck surface. Enter railings, stair treads and other measured surfaces as extra area; they are not automatically included.

Worked example

Length (ft): 16 · Width (ft): 12 · Faces / sides: 1 · Extra surface area (sq ft): 0 · Coats: 1 · Coverage per coat (sq ft / US gal): 200 · Container size (US gal): 1 · Extra material (%): 10.

These inputs produce 2 containers to order. Change the measurements above to match your project.

Before you order

Weathered or rough wood may absorb more stain. Use the product label’s rate for your surface condition and test a small area first.

For an irregular footprint, split the project into rectangles. Calculate each section and combine unrounded quantities before rounding the final order. Ask the supplier to confirm product yield and available package sizes.

Common questions