Cement & Sand Quantity Calculator for Masonry / Plastering

Estimate the quantity of cement and sand required for plastering or brick masonry. Enter wall dimensions and plaster thickness to get an accurate result.

⚙️ How to Use the Plaster Material Calculator

Follow these steps to quickly determine your material requirements:

  1. 1. Enter wall length, height, and plaster thickness (mm).
  2. 2. Select mix ratio (1:4, 1:5, 1:6).
  3. 3. Click Calculate to get total cement bags and sand volume required.

🧪 Key Formulas Used (Cement & Sand Calculation)

The calculation is based on converting the wet volume of mortar into its dry constituents, factoring in a standard 30% increase for dry volume and wastage.

  • Plaster Volume (m³) = Wall Length × Height × (Thickness ÷ 1000)
  • Cement : Sand = Selected Ratio (1:4, 1:5, etc.)
  • Cement Bags = (Cement Volume × 1440) ÷ 50
  • Sand Volume = Total Volume × Sand Ratio

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