Deck Paint Calculator

Paint and primer are calculated separately, each with its own raw requirement and purchase quantity.

Paintable area

sq ft

Number of coats

Paint coverage

sq ft/gal

Paint container size

gal

Include primer

Primer coats

Primer coverage

sq ft/gal

Primer container size

gal

Paint to buy

3 gal

Paint — raw requirement: 2.4 gal
Primer — raw requirement: 1 gal
Primer to buy: 1 gal

Verify coverage on the product label.

How it works

Paint and primer use the same underlying coverage math as the Stain Calculator — area × coats ÷ coverage rate, rounded up to a whole container — but run independently with their own coat counts, coverage rates, and container sizes, since primer usually covers differently than topcoat paint.

Continue planning your deck

This website provides planning estimates and mathematical calculations for informational purposes. Actual material requirements can vary based on layout, product specifications, installation methods, site conditions, and applicable building codes. Structural dimensions and construction requirements should be verified using applicable codes, manufacturer instructions, approved plans, or a qualified professional before construction.