Calculator

Plaster Materials Calculator

Estimate cement bags and sand for rectangular plastering work.

Surface Details

Surface width

Width unit

Surface length

Length unit

Plaster thickness

Thickness unit

Cement-to-sand ratio The nominal mixed ratio 1 : 3 means each part of cement uses 3 parts of sand.

Cement bag weight

Cement bag weight unit

Assumptions

The calculator uses cement density of 1440 kg per cubic meter and sand density of 1550 kg per cubic meter.
Wet mortar volume is increased by 30%, then the result is increased by 25%, matching the calculator specification.
Sand is reported in kilograms, tons, cubic meters, and cubic feet.
Result formatting follows the calculator specification: cement bags to 1 decimal place and sand values to 2 decimal places.

Disclaimer

This calculator provides an estimate for educational purposes only. It does not replace advice from construction specialists, contractors, or engineers.