Plaster Calculator
Calculate plaster volume, cement and sand needed from wall area and thickness.
—
How to use
- Enter the plaster area in sq ft.
- Enter the thickness in mm — inner walls are usually 12 mm, outer walls 15-20 mm.
- Enter the mix ratio (usually 1:4 or 1:6).
- Cement bags and sand needed will show below.
Note: Uneven walls can increase the actual volume, so keep some wastage. Rates change — verify with the official source before relying on this.
Frequently Asked Questions (FAQ)
What does the Plaster Calculator do?
It calculates plaster volume, cement bags and sand needed from the wall area, thickness and mix ratio.
What thickness should I use?
Inner walls are usually 12 mm, and outer walls 15 to 20 mm.
Does it include wastage and cost?
Yes. You can add a wastage percentage and the price per cement bag to get a cost estimate too.
Why add a wastage percentage?
Uneven walls use more plaster than the measured area suggests, so the wastage percentage covers the extra material.