
Slab Pouring Made Simple: How Many Concrete Bags You’ll Need
From 4-inch patios to garage floors — bag counts with examples.
Guides & tutorials that support the Concrete Bags Calculator.

From 4-inch patios to garage floors — bag counts with examples.

40 vs 50 vs 60 vs 80 lb vs 20 kg — which bag size and mix is right for you?

Mix ratios, strengths, and how they impact bag counts and coverage.

Compare ready-mix delivery vs bagged concrete and when each makes sense.

Use cylinder formulas and charts to size bags for sonotubes correctly.

Quick conversions from cubic feet, yards, or meters into bag counts using standard yields.

From small DIY pads to full foundations — use this method to estimate bag counts accurately.

Understand yields, densities, and why different bag sizes produce different coverage.

A practical, step-by-step tutorial to compute how many concrete bags you need for any pour.
Need instant results? Use the Concrete Bags Calculator.