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Lumora Tiles

Grout Calculator

Estimate how much grout you'll need before you start tiling. Enter your area, tile dimensions and grout joint size, and we'll calculate the kg required and how many bags to buy.

  • Joint depth is usually the same as your tile thickness, check the specification table on your tile's product page.
  • Smaller tiles need more grout per m² because there are more joints, while large-format tiles need less.
  • This is a standard industry estimate, always round up and buy a little extra grout to allow for mixing waste.

Frequently Asked Questions

Grout Calculator

Unit:
Grout joint width
Wastage allowance
Grout bag size