MistriCalc → Tile Calculator
Tile Calculator
Number of tiles, boxes, adhesive bags, and tiling cost for any floor or wall — enter the area or the room dimensions and add wastage.
Materials & quantities explainer
Run your numbers first, then read how it works. Start with the calculator below — the example values are pre-filled — then keep scrolling for the method, a worked example and the questions builders ask most. Everything runs in your browser; nothing you type is stored.
Calculator
To find how many tiles you need, divide the area by the area of one tile, then add a wastage allowance. For a 16 m² room with 600×600 mm tiles (0.36 m² each), that is 16 ÷ 0.36 = 44.4 tiles, and with 10% wastage about 49 tiles — roughly 13 boxes of four. Thin-bed adhesive runs about 4 kg/m², so a 20 kg bag covers ~5 m².
Key takeaways
- Tiles = area ÷ tile area, then + wastage.
- 600×600 mm tile = 0.36 m²; 300×300 = 0.09 m².
- Add 10% wastage (15%+ for diagonal/patterned).
- Adhesive ≈ 3–4 kg/m²; 20 kg bag ≈ 5 m².
- Cost = tiles × rate per tile (Rs).
How tile quantities are calculated
The tool computes the surface area (or uses your length × width), divides by the area of one tile, then adds your wastage percentage and rounds up to whole tiles.
Boxes are the tiles divided by the tiles-per-box, which varies by tile size (about 17 for 300×300, 8 for 300×600, 4 for 600×600, 2 for 600×1200); check your brand's box count.
Worked example: a 4 m × 4 m hall in 600×600 tiles
A hall is 4 × 4 = 16 m², tiled in 600×600 mm (0.36 m²). Base tiles = 16 ÷ 0.36 = 44.4. With 10% wastage = 44.4 × 1.10 = 48.9 → 49 tiles, about 13 boxes of four. Adhesive = 16 × 4 = 64 kg → 4 bags of 20 kg. At Rs 120 per tile, cost = 49 × 120 = Rs 5,880 for the tiles.
Tiles per square metre by size
| Tile size | Area (m²) | Tiles / m² | Tiles / 16 m² |
|---|---|---|---|
| 300 × 300 mm | 0.09 | 11.11 | 178 |
| 300 × 600 mm | 0.18 | 5.56 | 89 |
| 600 × 600 mm | 0.36 | 2.78 | 45 |
| 600 × 1200 mm | 0.72 | 1.39 | 23 |
| 800 × 800 mm | 0.64 | 1.56 | 25 |
| 2 × 2 ft (610×610) | 0.372 | 2.69 | 43 |
Per-16 m² figures are before wastage; add your wastage % on top.
Where this fits in your build
Tiling follows plaster and screed — estimate plaster with the plaster calculator and walls with the brick calculator. For the screed bed under the tiles, the concrete calculator gives cement and sand.
Frequently asked questions
How many tiles do I need for a room?
Area ÷ tile area, plus wastage. A 16 m² room in 600×600 tiles ≈ 44 tiles, ~49 with 10% wastage.
How much wastage should I add?
About 10% for straight layouts, 15%+ for diagonal or patterned tiling and small rooms with many cuts.
How much adhesive per m²?
Roughly 3–4 kg/m² thin-bed; at 4 kg/m² a 20 kg bag covers about 5 m².
How do I work out tiles from length and width?
Multiply length × width for the area, then divide by the area of one tile. Convert feet to metres first if needed.
How many 600×600 tiles per box?
Commonly 4 per box (≈ 1.44 m²), but it varies by brand — check the label.
Adhesive or cement-sand?
Thin-bed adhesive is best for vitrified and large tiles; traditional cement-sand beds use much more material.
Tile counts are geometric (area ÷ tile area + wastage). Thin-bed adhesive coverage of ≈ 3–4 kg/m² follows manufacturer datasheets and standard tile-adhesive practice; cement-sand bedding follows standard flooring practice. Box quantities vary by brand — confirm on the packaging.
Last reviewed 2026-06-14