Mosaic Tile Count Calculator
Each tile occupies a square footprint equal to the tile side plus the grout gap (the pitch), squared. Dividing 1m² by that pitch squared gives tiles per m²; multiplying by area and the waste rate gives the actual quantity to buy.
Your numbers
Tiles needed
4,546
Tiles per m²
2,066
Formula
Tiles needed = ceil(Coverage area (m²) × (1,000,000 ÷ (Tile side (mm) + Grout gap (mm))²) × (1 + Cutting waste ÷ 100))
Edges and curves eat up a lot of cut-off scrap. Budget around 10% waste for simple rectangular areas, 20%+ for curvy designs.
What to enter
| Input | Default | Accepted range |
|---|---|---|
| Coverage area (m²) (m²) | 2 | 0.1 and up |
| Tile side (mm) (mm) | 20 | 5 ~ 100 |
| Grout gap (mm) (mm) | 2 | 0 ~ 10 |
| Cutting waste (%) | 10 | 0 ~ 30 |
Step by step
Quick reference table
Results when only Coverage area (m²) (m²) changes and everything else stays put.
| Coverage area (m²) (m²) | Tiles needed | Tiles per m² |
|---|---|---|
| 1 | 2,273 | 2,066 |
| 1.5 | 3,410 | 2,066 |
| 2 | 4,546 | 2,066 |
| 3 | 6,819 | 2,066 |
| 4 | 9,091 | 2,066 |
What each result means
| Result | At default values |
|---|---|
| Tiles neededTiles needed; cutting waste comes on top of this. | 4,546 |
| Tiles per m² | 2,066 |
Common mistakes
Edges and curves eat up a lot of cut-off scrap. Budget around 10% waste for simple rectangular areas, 20%+ for curvy designs.
Frequently asked questions
QHow is Mosaic Tile Count Calculator calculated?
Tiles needed = ceil(Coverage area (m²) × (1,000,000 ÷ (Tile side (mm) + Grout gap (mm))²) × (1 + Cutting waste ÷ 100)) — Each tile occupies a square footprint equal to the tile side plus the grout gap (the pitch), squared. Dividing 1m² by that pitch squared gives tiles per m²; multiplying by area and the waste rate gives the actual quantity to buy.
QCan you walk through an example?
With Coverage area (m²) 2m², Tile side (mm) 20mm, Grout gap (mm) 2mm, Cutting waste 10%, the answer is Tiles needed 4,546.
QWhat do I need to enter?
Enter Coverage area (m²), Tile side (mm), Grout gap (mm), Cutting waste. The result recalculates as you type, and an empty box counts as zero.
QHow much does the answer move if I change a number?
Changing only Coverage area (m²) (m²) moves the answer to Coverage area (m²) (m²) 1 → Tiles needed 2,273 and Coverage area (m²) (m²) 4 → Tiles needed 9,091. The table below lays out five steps.
QHow are the numbers rounded?
Money is shown to the nearest whole unit, percentages to one decimal place and everything else to two. What you see is rounded; the calculation itself carries the unrounded value forward.
QAnything to watch out for?
Edges and curves eat up a lot of cut-off scrap. Budget around 10% waste for simple rectangular areas, 20%+ for curvy designs.
Related calculators
Materials differ in density and absorption. If your label states a figure, use it — the defaults here are only common values.