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Wall Plastering Calculator

Total wall length m
Wall height m
Layer thickness mm
Number of wall openings
Reserve coefficient %
1st opening
Length mm
Height mm
2nd opening
Length mm
Height mm
3rd opening
Length mm
Height mm
4th opening
Length mm
Height mm
5th opening
Length mm
Height mm
6th opening
Length mm
Height mm


This online Wall Plastering Calculator is designed for fast and accurate calculation of the plaster required for wall finishing. With this tool, you can easily determine material consumption per square meter, helping to prevent surplus or shortage during your project. It is particularly useful for estimating the needed plaster for wall surfaces before beginning any work.

Calculator features:

  • Calculates plaster requirements per m² of wall by considering the plaster layer thickness and wall area.
  • Efficiently determines plaster consumption per square meter, which is especially critical for large-scale projects.
  • Accounts for door and window openings to ensure more precise calculations.
  • Offers the option to set a reserve factor to address potential material losses during application.

How to use the calculator:

  1. Enter the total length of the walls to be plastered by summing the lengths of all room sides.
  2. Specify the height of the walls.
  3. Set the thickness of the plaster layer. For thicknesses exceeding 12-13 mm, it is recommended to use reinforcing mesh.
  4. Indicate the number and dimensions of any openings, such as doors and windows.
  5. Specify the reserve factor for a more accurate calculation.
  6. Click the "Calculate" button to view the result.

The calculator displays the effective wall surface area excluding openings, the required volume of plaster, and the final volume including the reserve. This helps to accurately determine the plaster needed for any wall construction or renovation project.

Use this Wall Plastering Calculator to optimize your plaster estimation process and avoid errors when purchasing materials.