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Plaster Calculator

Enter the area and plaster thickness to get the cement bags and sand needed for your mortar mix.

Enter your details

1:4 is typical for walls, 1:3 for waterproof or exterior work.
%
Allowance for spillage, cutting and breakage.

SARZAMEEN Tools | Plaster Calculator

Estimate generated 19 Oct 2026 | https://www.property.candletrack.pro/public/buildcraft/tool/plaster-calculator

Results

Enter your values and press Calculate. Results will appear here and update as you change inputs.

    Results are estimates, not quotations. Confirm quantities and prices with your contractor or supplier.

    How this calculator works

    • Dry mortar volume = wet volume × 1.33.
    • Surface unevenness can raise real thickness well above the nominal figure.

    Frequently asked questions

    About 12 mm (½ inch) is typical internally; external plaster is often 15 to 20 mm.

    Poor masonry can need 30% or more extra mortar. Increase wastage accordingly.

    Related tools

    Wall Putty CalculatorCalculate wall putty in kg and bags for smooth wall finishing. Paint CalculatorEstimate paint quantity in litres and gallons from room dimensions. Sand CalculatorCalculate the volume and weight of sand for concrete, mortar or plaster. Waterproofing CalculatorEstimate waterproofing coating quantity for roofs, bathrooms and tanks.