FREE ONLINE CALCULATOR

Tadelakt Calculator: Quantity, Bags & Cost

For tadelakt, the most important input is the consumption basis. This estimator specifically uses the total product consumption per square metre for the entire planned application, rather than assuming all systems use the same number of coats.

Configure your estimate

Starting numbers are illustrative only, not verified coverage or current prices. Replace them with measurements and your exact product’s data sheet before buying.

This calculator needs JavaScript. Enable JavaScript to use the interactive estimate; the formulas are explained below.

Tip: a product rate listed per layer and one listed for an entire system are not interchangeable. Use the rate described in each input label.

How to use this calculator

Find the total required material consumption on the relevant product instructions. Enter that number in kilograms per square metre along with the measured area and waste allowance. The calculator returns estimated kilograms and full bags to purchase.

The calculation explained

Tadelakt kg = project m² × total-system kg/m² × (1 + waste ÷ 100). Whole bags = round up(kg ÷ kg per bag).

Important: These are planning calculations, not installation instructions, warranty advice or professional specifications. Site and manufacturer requirements take priority. Default input values are examples only.

Check these details before ordering

  • Do not input a single-layer rate when the field asks for the total system.
  • Check which other items are required for your exact finish system.
  • Specialist wet-area finishes are not a substitute for proper waterproofing design.

Frequently asked questions

Does this calculator design a waterproof bathroom?

No. Material quantities do not demonstrate waterproofing suitability. Follow product documentation and consult a suitably qualified professional for wet areas.

What does total-system consumption mean?

It is the cumulative quantity stated for the entire specified application, rather than the amount for one layer.

Can this estimate full bag costs?

Yes, after you replace the sample bag size and bag price with your supplier’s actual information.

Read the related guide

For more context, see Planning Decorative Finishes for Bathrooms and Other Wet Areas. It explains practical assumptions that a calculator cannot confirm for your individual project.