DIY

How Many Bags of Concrete Do You Need?

Built by Kevin Glover · @gloverbuilds · Verified formula

Calculate cubic yards of concrete needed for slabs, footings, columns, and steps. See bags needed by size.

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

In this article

Concrete Volume Formula
Bags vs Ready-Mix

Formeln

Platte: L × B × Dicke (m). 6×3×0,10 = 1,8 m³ + 10% = 2 m³. Transportbeton: 80-120 €/m³. Saecke: ~85 × 25 kg fuer 1 m³ (~280-340 €). Ab 1 m³: Transportbeton wirtschaftlicher.

Aushärtung

Begehbar: 24-48h. 70% Festigkeit: 7 Tage. Volle Aushärtung: 28 Tage.

⚡ CalcWolf Insight

Concrete calculator gets 85K monthly searches with strong seasonal peaks (March-October in northern climates). Users are in active buying mode — they need concrete NOW — making this page valuable for home improvement retailer ads (Home Depot, Lowes have high CPCs on these terms).

Frequently asked questions

Wie viel fuer 3×3 Platte?▾

Bei 10 cm: ~1 m³. Transportbeton: ~100-120 €.

Saecke oder Transportbeton?▾

Unter 0,5 m³: Saecke. Darueber: Transportbeton.

✓ 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 →