DIY & materials · Calculator companion · By K Imports
Tile coverage: practical guide
This guide explains how to use the Count.ie tile coverage. Estimate tiles and boxes with a pattern-specific waste allowance. Follow the inputs, method and worked example below, then compare your own scenario.
Guide written .
Open the Tile coverage calculatorWhat to prepare
- Measure the actual space and record every dimension with its unit.
- Check the supplier's pack size, stated coverage and installation instructions.
- Separate the measured requirement from waste, cuts, overlaps and spare material.
Understand the inputs
- Laying pattern
Options: Straight — 5% waste; Offset — 10% waste; Herringbone — 15% waste.
The calculation method
Surface area with waste allowance divided by tile area; whole tiles and boxes round up.
Worked example
Illustrative inputs and their result.
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
Calculated example result
- Tiles
- 59
- Boxes
- 15
How to interpret the result
The calculated quantity is a planning estimate, not an installation specification. Whole packs and site conditions can change the order; structural or safety-critical work needs appropriate professional guidance.
Compare alternative dimensions or pack sizes without changing the unit basis. Re-measure uncertain areas before buying, and use the manufacturer's instructions to decide a suitable allowance.
Common mistakes to avoid
- Convert millimetres, centimetres and metres before combining measurements.
- Do not add the same waste allowance at both measurement and ordering stages.
- Check irregular shapes, openings, substrate conditions and manufacturer coverage separately.
Assumptions and sources
Allowance percentages are planning assumptions. Layout, grout spacing, cuts and breakages may change the required quantity.
If your case falls outside this scope, use a more suitable calculator or contact us about an unclear method.