Tile Adhesive Calculator
Work out how much tile adhesive you need. Enter the area to cover and the calculator returns the quantity (allowing for waste) and an indicative cost.
How we estimate this
A 20kg bag of tile adhesive covers roughly 5m² with a standard trowel notch. Larger tiles, uneven surfaces and a bigger notch all use more, so round up and keep a spare bag.
Pricing reviewed: October 2026.
Pricing reviewed October 2026. Indicative Australian costs, not a quote.
Understanding tile adhesives in Australia
A 20kg bag of tile adhesive covers roughly 5m² with a standard trowel notch. Larger tiles, uneven surfaces and a bigger notch all use more, so round up and keep a spare bag.
Use the right adhesive for the job, flexible adhesive for floors and wet areas, and a suitable type for large-format tiles, which need full coverage to avoid drumming.
Frequently asked questions
How much tile adhesive do I need?
Roughly one 20kg bag per 5m² at a standard notch. Large or uneven tiles use more, so round up and keep a spare bag.
What size notch trowel should I use?
Bigger tiles need a bigger notch and more adhesive for full coverage. Follow the adhesive and tile maker's guidance, under-coverage causes tiles to drum or lift.
Are you a supplier / trades business?
Everyone on this page is working out what tile adhesive costs because they are ready to hire. Put your business right beneath the calculator, in your state, so you are who they find. From $50/mo.