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How Much Paint Do You Need?

Calculate gallons of paint needed for any room. Enter dimensions, number of coats, and get the exact amount with cost estimate.

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

Calculation

1 लीटर = 8-12 sq ft (1 coat)। Room 10×12 ft, 10 ft height, 2 coats: ~8-10 litres। Asian Paints, Berger, Nerolac: top brands। Royale (premium): ₹400-600/L। Tractor Emulsion (budget): ₹150-250/L।

Coats

1: same color refresh। 2: color change। 3: dark to light। Primer ज़रूरी for new walls and dark-to-light।

⚡ CalcWolf Insight

Benjamin Moore and Sherwin-Williams premium paints cover 400+ sq ft per gallon vs 300 sq ft for budget paints. At 2 coats on a 12×12 room, premium requires 2 gallons ($120) while budget requires 3 gallons ($84) — premium is only $36 more and looks significantly better.

Frequently asked questions
10×12 room?▾
8-10 litres (2 coats)। Asian Paints Royale: ₹3,500-6,000।
Best brand?▾
Asian Paints: #1 market share। Berger: good value। Nerolac: industrial strong।
✓ 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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