Grout Calculator
Work out how much tile grout you need. Enter the area to cover and the calculator returns the quantity (allowing for waste) and an indicative cost.
How we estimate this
Grout coverage depends on the tile size and joint width, smaller tiles and wider joints use far more. As a rough guide, allow about 1kg of grout per 5m² of standard floor tiling, and buy a little extra to be safe.
Pricing reviewed: October 2026.
Pricing reviewed October 2026. Indicative Australian costs, not a quote.
Understanding grouts in Australia
Grout coverage depends on the tile size and joint width, smaller tiles and wider joints use far more. As a rough guide, allow about 1kg of grout per 5m² of standard floor tiling, and buy a little extra to be safe.
Always mix from the same batch where possible, colour can vary slightly between batches, which shows on a large floor.
Frequently asked questions
How much grout do I need?
Roughly 1kg per 5m² of standard floor tiling, but small tiles and wide joints use much more. Enter your area for an estimate and buy a little extra.
Does tile size affect grout quantity?
Yes, a lot. Small mosaics with wide joints use several times more grout per square metre than large-format tiles with thin joints.
Are you a supplier / trades business?
Everyone on this page is working out what grout 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.