Paint Coverage Calculator
Compute paint liters needed for an area, given coverage per liter and coats.
Paint yield per liter
The formula is liters = (area × coats) / yield, then add 10% for losses. Typical yields per coat: acrylic latex 12–14 m²/L (a 3.6 L gallon covers ~40–50 m² in one coat), synthetic enamel 10–12 m²/L, varnish 8–10 m²/L, epoxy 8–10 m²/L, textured paint 6–8 m²/L. The default is 2–3 coats (white over white); up to 4 coats when changing color (dark → light). Premium paints offer higher coverage and washability — Brazilian standard NBR 15079 classifies water-based paints as Premium / Standard / Económica by yield, hiding power and wash resistance.
Example: 60 m² wall, latex 13 m²/L, 2 coats → (60 × 2) / 13 = 9.23 L × 1.10 = 10.2 L (round up to 3 gallons of 3.6 L).
Applications
Construction budgeting, repaint planning, façade work (requires acrylic or elastomeric paint for waterproofing), painter quotes verification, retail estimates at Leroy Merlin / Telhanorte / C&C.
FAQ
Why is real yield lower than the can label? Manufacturers assume smooth walls, single light color and skilled application. Real yield drops 20–30% on textured surfaces or dark substrates.
Can I skip the 10% margin? Not recommended — touch-ups, roller absorption and edges always consume more than the math suggests.
Premium vs economy: is it worth it? Premium covers in fewer coats and lasts longer between repaints — usually cheaper per year despite costing 50–100% more upfront.
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The results provided by this tool are for general informational and educational purposes only and do not constitute professional, financial, medical, legal, tax or accounting advice. Always confirm important decisions with a qualified professional and official sources.