Plastering Calculator

Inputs

Results update as you type.

Quick Start
Surface
m²
mm
Mix
Plaster 1:4 on 100 m²Plaster 1:4 on 100 m²wall plaster 12 mmmyconstructioncalculator.comNot to scale
Diagram updates as you type.

Results

Check the working before you order.

Cement (50 kg bags)
8.78bags
Sand1.22 m³
Wet plaster volume1.200 m³
Cement weight438.9 kg
Price This optional: add your own prices

Your prices are remembered on this device only.

Working
  1. Wet volume = area × thickness = 100.0 m² × 0.0120 m = 1.2000 m³
  2. Dry volume = 1.2000 × 1.27 = 1.5240 m³
  3. Cement = 1.5240 × 1 ÷ 5 = 0.3048 m³ = 8.78 bags
  4. Sand = 1.5240 × 4 ÷ 5 = 1.2192 m³

Results are estimates for planning and material ordering only. They are not a substitute for structural design or approval by a qualified engineer. Read the full disclaimer.

Plastering Calculator byMy Construction Calculator: free construction calculators with the working shown.