Tile adhesive calculator: how many bags
Area and the usage in kg/m² from the technical sheet give the number of whole bags of adhesive or mortar to buy.
Your figures
Result
The figures changed. Press “Calculate again” to see the new result.
Building material catalogue — 16 materials in the catalogue
How we calculate it
What you enter
- Area (m²)
- Usage (kg/m²)
- Bag (kg)
What to watch out for
Adhesive usage depends on the trowel notch and how flat the substrate is. The figure here is the datasheet usage; on an uneven wall it can rise by half.
Formula
kilograms = Area × Usage
bags = ⌈ kilograms ÷ Bag ⌉The site's engine is a 1:1 port of the Android app's code.
Frequently asked questions
How much adhesive does 1 m² of tiles take?
Usage depends on the notch of the trowel and on how flat the surface is, and it is printed on the technical sheet. The calculator multiplies it by the area and divides by the bag weight.
Why does more adhesive go than the sheet says?
The figure on the sheet assumes a flat surface. On an uneven wall usage can rise by half, so enter a higher value when the wall is out of true.
Other calculators
Guides that use this calculator
The same formula in the app LiczMat for Android uses the same engine offline — with the material catalogue and results saved into a project. Download