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How Much Firewood Do You Need?

Built by Kevin Glover · @gloverbuilds · Verified formula

Calculate cords of firewood needed for the heating season based on home size, climate zone, and heating method.

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

In this article

How Much Firewood You Need
Hardwood vs Softwood

No Brasil

O uso residencial de lenha no Brasil é mais comum no Sul (lareiras, fogões a lenha) e no interior (fornos de pizza, churrasqueiras). Fogão a lenha: 2-5 m³/ano. Lareira (uso ocasional): 1-3 m³. Forno de pizza: 0,5-1 m³. O eucalipto é a lenha mais usada e acessível no Brasil: R$100-200/m³.

Qualidade

Lenha seca (1+ ano de secagem) queima melhor e produz menos fumaça. Lenha verde tem 50% de água — queima mal e cria creosoto (risco de incêndio). No Brasil, eucalipto e goiabeira são excelentes — aroeira e peroba são premium.

⚡ CalcWolf Insight

Firewood calculator searches peak September-November as people prepare for winter. In cold-climate states, this is a critical seasonal purchase decision. Firewood suppliers and stove retailers advertise in this space at $3-8 CPC.

Frequently asked questions

Quanto para a temporada?▾

Lareira inverno no Sul: 2-3 m³. Fogão a lenha semanal: 4-6 m³/ano.

Qual melhor lenha?▾

Eucalipto: abundante e barato. Goiabeira: boa brasa (churrasco). Aroeira: premium.

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Kevin Glover · @gloverbuilds

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 →