Wood Deck Stain & Sealer Gallon Estimator (Spindles + Planks)

Estimate stain gallons for wooden deck flooring, stairs, and vertical railings.

Interactive Material & Cost Estimator

Coverage Rate Mode • Gallons

1. Select Project Area Shape

Length (Feet)

Width (Feet)

Waste / Cut / Compaction Buffer

2. Select Package / Unit Size

Price / Unit ($)

Contractor / Bulk ($)

Delivery ($)

Estimated Material Needed 192 sq ft (+10% buffer)

Net + Buffer Area 211 sq ft 192 base sq ft

Coverage Per Package 175 sq ft per unit (gallon cans)

Total Units / Packages to Buy 2 gallon cans

Waste Buffer Included +10% included

Estimated Project Material Cost 2 gallon cans

Retail Package Total $97.96 Before local sales tax

With Delivery / Bulk $97.96 Direct store pickup

Instant pre-calculated material estimates for common US residential project sizes before compaction buffer:

Typical US Project	Area	Depth	Volume	Weight	Store Bags
Medium Deck with Rails (12 ft × 16 ft)	192 sq ft deck	2 Coats	3 Gallons	30 lbs	3 gallon cans

Gallons = (Total Surface Sq Ft + Railing Sq Ft) ÷ Coverage Rate per Gallon

Smooth cedar or pressure-treated pine absorbs roughly 150 to 200 sq ft per gallon for a single coat.

Transparent and semi-transparent stains soak deep into wood pores. Solid stains act more like paint and require fewer coats on weathered wood.

Roughly 1 to 2 gallons per coat depending on wood porosity.