Deck stain calculator
PROGallons of stain for decking and railings.
Short answer: gal = (area × coats) ÷ coverage per gallon. 300 sq ft × 2 coats ÷ 200 sq ft/gal = 3 gallons. Enter your measurements above and the deck stain calculator returns the quantity, unit conversions and an estimated cost instantly, in imperial or metric — no sign-up needed.
What do you need to measure?
What is the answer?
Gallons
3.0
1 gal cans
3
5 gal buckets
1
How does the deck stain calculator work?
gal = (area × coats) ÷ coverage per gallon.
What does a worked example look like?
300 sq ft × 2 coats ÷ 200 sq ft/gal = 3 gallons.
What do people ask most?
›One or two coats?
Two thin coats last longer than one thick coat.
Which outdoor construction calculator should you use next?
Where can you learn more?
Read field notes on estimating and materials, or browse every calculator we make.