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CalcWolf DIY Estimador de Quantidade de Tinta
DIY

How Many Gallons of Paint?

Calculate paint gallons for any room by dimensions. Doors, windows, and coats included.

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

O Cálculo

1 litro = 10-12 m² superfície lisa. Perímetro × altura - portas/janelas × demãos ÷ 10. Quarto 4×3,5 a 2,50 m, 2 demãos: ~6 litros. No Brasil: lata de 3,6L (R$80-200) ou 18L (R$250-600) dependendo da marca.

Demãos

1: retoque mesma cor. 2: mudança de cor. 3: escuro → claro. Suvinil, Coral e Sherwin-Williams são as marcas mais populares no Brasil.

⚡ CalcWolf Insight

Buy all paint from the same batch — different batches can have subtle color variations visible on the wall.

Frequently asked questions
Litros para quarto 12 m²?
Paredes (2 demãos): 5-6 litros. Teto: 2-3 litros.
Precisa de selador?
Sim para: escuro→claro, manchas, reboco novo.
✓ 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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