DIY & materials
Tile Coverage and Waste Calculator
Estimate tiles and boxes with a pattern-specific waste allowance. This free tile coverage and waste calculator shows the calculation and its assumptions so you can compare your own figures.
Your results
Estimate tiles and boxes with a pattern-specific waste allowance.
Calculated outcomes
- Area M2
- 20 m²
- Tile Area M2
- 0.36 m²
- Waste Percent
- 5%
- Order Area M2
- 21 m²
Assumptions and estimates
- Waste assumptions: straight 5%, offset 10%, herringbone 15%. Area method excludes grout joints, exact cutting layouts and complex shapes. Box quantity rounds up; use tiles per box from the supplier.
- Method: Surface area with waste allowance divided by tile area; whole tiles and boxes round up.
- Allowance percentages are planning assumptions. Layout, grout spacing, cuts and breakages may change the required quantity.
Useful next steps
- Use Compare options to test an alternative side by side.
- Copy, print or download a record of this calculation when you need one.
Reports open your email app addressed to s@s1.ie with the public page address only. Your inputs are never added.
How the tile coverage calculation works
Surface area with waste allowance divided by tile area; whole tiles and boxes round up.
Allowance percentages are planning assumptions. Layout, grout spacing, cuts and breakages may change the required quantity.
Using this calculator
- Enter your own figures in the labelled inputs. Keep the currencies, units and time periods consistent.
- Choose any applicable rate profile, pattern or assumption shown for this tool. Open additional inputs when relevant.
- Review tiles and boxes, then read the stated assumptions and eligibility conditions before using the result.
Worked example
This is a static example using illustrative inputs, not facts about you or today’s date. The displayed eligibility selections and assumptions apply only to this example.
See example inputs
- Length (m)
- 5
- Width (m)
- 4
- Tile length (mm)
- 600
- Tile width (mm)
- 600
- Laying pattern
- Straight — 5% waste
- Tiles per box
- 4
- Tiles
- 59
- Boxes
- 15