DIY

Deck Board Calculator

Built by Kevin Glover · @gloverbuilds · Verified formula

Calculate decking boards needed by deck size. Spacing and waste included. Free calculator.

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

In this article

How to Use This Calculator
Getting Accurate Results

O Cálculo

Tábuas padrão: 14 cm de largura + 5 mm espaçamento. Fileiras = largura ÷ 14,5 cm. Deck 4×5 m: ~28 fileiras. +10% perdas. Composite não precisa de manutenção mas custa 2-3× a madeira tratada. No Brasil, cumaru e ipê são as madeiras premium para deck.

Madeira vs Composite

Eucalipto tratado: R$100-200/m². Cumaru/ipê: R$300-600/m². Composite WPC: R$250-500/m². Em 10 anos, custo total é similar incluindo manutenção da madeira.

⚡ CalcWolf Insight

The most overlooked deck expense: hidden fasteners. Face-screwing is the cheapest method ($0.02/screw) but leaves visible screw heads that collect dirt and moisture. Hidden clip systems ($0.25-0.50/board-foot) create a clean surface with no visible fasteners — worth every penny on a composite deck where aesthetics matter.

Frequently asked questions

Quantas tábuas para 4×5m?▾

~28 fileiras. Em tábuas de 2,40m: ~60 + 10% = 66.

Madeira ou composite?▾

Madeira: estética natural, manutenção anual. Composite: zero manutenção, 25+ anos.

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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 →