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

Berechnung

Dielen = Flaeche / Dielenbreite × Laenge + 10%. UK-Balken: alle 40-50 cm. Laerche/Douglasie: 15-30 €/lfm. WPC: 20-40 €/lfm.

Unterkonstruktion

Alu-UK: rostfrei, langlebig (50+ Jahre). Holz-UK: guenstiger, 10-15 Jahre.

⚡ 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

Wie viel fuer 20 m²?▾

~50 lfm Dielen + UK + 10%. Laerche: 750-1.500 €.

Alu oder Holz UK?▾

Alu: rostfrei, 50+ Jahre. Holz: guenstiger, 10-15 Jahre.

✓ Math logic verified against primary sources → See our verification process

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 →