Plaster calculator

Estimate cement and sand for plastering from the area, the thickness and the mortar mix.

How it works

Wet volume = area × thickness. Dry volume is taken as 1.27 times the wet volume, then split by the mix ratio. A 50 kg cement bag is taken as 0.0347 m³. Add your own allowance for uneven walls.

Always confirm measurements for a purchase or registration with official records.

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