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How Much Concrete Do You Need?

Calculate cubic yards of concrete for slabs, footings, columns, and stairs. Includes bag count and cost estimate.

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

Die Berechnung

Volumen = Länge × Breite × Dicke (m). Platte 6×3 m bei 10 cm: 6×3×0,10 = 1,8 m³. Immer 10% Verschnitt addieren. Ein Betonmischer liefert 6-8 m³. Unter 0,5 m³: Trockenbeton-Säcke sind praktischer (25 kg Sack ≈ 0,012 m³).

Kosten in Deutschland

Transportbeton: 80-120 €/m³ (Mindestmenge 3-5 m³). Trockenbeton: ~3-4 €/25-kg-Sack. Für 1 m³ in Säcken: ~85 Säcke = ~280-340 €. Transportbeton lohnt sich ab 1-2 m³.

⚡ CalcWolf Insight

The most common DIY concrete mistake: ordering too little. Concrete cannot be "added later" — the cold joint between pours is a permanent weakness. Order 10% more than calculated and send back what you do not use.

Frequently asked questions
Wie viel für 3×3 m Platte?
Bei 10 cm: 0,9 m³ + 10% = ~1 m³. Transportbeton: ~100-120 €.
Säcke oder Transportbeton?
Unter 0,5 m³: Säcke. Darüber: Transportbeton (günstiger, bessere Qualität).
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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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