When to use this calculator
Estimate whole tiles for an area including a chosen waste allowance. Excludes grout gaps and detailed layout. Check pack sizes before ordering.
Explore the material quantities calculators for other questions in this topic. For a related calculation, use the Timber Volume Calculator: Find total solid timber volume from actual board dimensions and quantity.
PUTTING IT INTO PRACTICE
Tile Quantity: a worked example
The values below are an illustrative example, not a recommendation. Replace them with measurements or assumptions that match your question.
| Input | Example value |
|---|---|
| Area (m²) | 20 |
| Tile length (cm) | 60 |
| Tile width (cm) | 60 |
| Waste allowance (%) | 10 |
| Result | 62 tiles |
- Check the input labels and enter the example values above.
- Apply the relationship: Tiles = ceiling(area × (1 + waste/100) ÷ tile area).
- The result is 62 tiles, rounded for display.
How to interpret your result
Excludes grout gaps and detailed layout. Check pack sizes before ordering.
Calculate net geometric quantities first, then apply a project-specific allowance where appropriate. Coverage per bag or pack should come from the product label. Bulk density, trimming and compaction can substantially change order quantities.
Frequently asked questions
Does a geometric estimate include waste automatically?
Only when a waste or allowance input is provided. Otherwise add an appropriate allowance separately before ordering.
How do I use the tile quantity calculator?
Enter area (m²), tile length (cm), tile width (cm), waste allowance (%). The result updates automatically. Use the units shown beside each input; the example values illustrate the method.
Which formula does this calculator use?
Tiles = ceiling(area × (1 + waste/100) ÷ tile area).
What should I check before using the result?
Excludes grout gaps and detailed layout. Check pack sizes before ordering.
How are results rounded?
Scalar numbers display up to six decimal places, with scientific notation for very large or small values. Text, fraction, date and schedule outputs use the format described on the tool. Intermediate calculations use JavaScript floating-point arithmetic. Keep sensible precision for your measurements.
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