Tile wastage
A wastage allowance of around 10% is a common starting point for straight lay patterns, and higher for diagonal, herringbone or complex cuts.
TILING MATERIAL CALCULATOR
How much tile, adhesive
How much tile, adhesive
and grout do you need?
Enter the area and get a quick planning estimate for tiles, adhesive and grout — free, no sign-up. For the exact numbers on a real job, TileIQ works this out automatically from your measurements every time.
Quick estimate
Area→Tiles→Adhesive→Grout
Tile area to buy (with wastage)–
Approx. number of tiles–
Adhesive needed–
Grout needed–
Planning estimates only. Adhesive and grout coverage vary by product, trowel notch size and tile size — always check the coverage guidance on the packaging you're using before ordering for a real job.
01
HOW THE NUMBERS WORK
How much adhesive do I need for 35m²?
As a planning estimate: at a typical coverage rate of around 4kg per m² (roughly what a 6mm notched trowel uses for a single fix), 35m² needs about 140kg of adhesive — seven 20kg bags. Grout at a medium joint width (around 0.6kg per m²) would need about 21kg, or five 5kg bags. Always confirm against your specific product's coverage chart, since it changes with trowel notch size, tile size and how flat the substrate is.
Adhesive coverage
Coverage depends on trowel notch size and whether it's a single or solid bed fix — check the bag for the exact figure.
Grout coverage
Wider joints and larger tiles both increase how much grout a job needs per m².
02
DOING THIS ON A REAL JOB
Want TileIQ to calculate this automatically on every job?
This calculator gives a quick planning estimate. On a real job, TileIQ calculates tiles, adhesive and grout directly from the room measurements you take — with wastage, tile type and coverage built in — so the quote you send is accurate, not rounded up "to be safe".
From measurement to quote
Material calculations feed straight into a professional quote you can send from site.
See the quote app →Leica Disto™ integration
Connect a compatible Leica Disto by Bluetooth for fast, accurate measurements.
See how it works →Let TileIQ do this calculation for you.
Free to start. No credit card required.