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How Much Stain Do You Need?

Calculate gallons of stain for your deck, fence, or outdoor wood project by surface type, area, and wood condition.

📅 Updated April 2026 Formula verified 📖 4 min read 🆓 Free · No sign-up

Coverage

Smooth wood: 80-120 sq ft/L। Rough: 50-80। 2 coats always। 200 sq ft deck: ~5-6 litres। Asian Paints WoodTech, Pidilite: popular brands।

Indian Climate

Monsoon + heat = wood needs UV + water protection। Marine-grade varnish for outdoor furniture। Teak oil for indoor teak furniture।

⚡ CalcWolf Insight

Oil-based stains penetrate deeper than water-based and last 20-30% longer on horizontal surfaces. However, water-based stains are easier to apply, dry faster, and clean up with water. For deck floors (heavy foot traffic), oil-based is worth the extra hassle.

Frequently asked questions
200 sq ft?
2 coats: 5-7 litres।
कब reapply?
Outdoor: yearly। Indoor: 2-3 years।
✓ Math logic verified against primary sources → See our verification process
Kevin Glover
Founder, CalcWolf · GLVTS · Blickr
All formulas sourced from primary references — IRS publications, peer-reviewed research, and official standards. Results are tested against independent reference calculators before publishing. Rates and brackets updated when official sources change. Editorial policy →
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