Tile calculator for floors and walls
Calculate tiles for your room
Enter the room area (or length × width), pick a tile size — results update as you type.
10% for straight laying, 15% for diagonal
Materials required
- Tiles needed0
- Boxes to buy0
- Tile adhesive0
- Grout0
- Skirting tiles0
- Estimated tile cost₹0
Sample figures shown for illustration — pending verification against real Tirupati market rates before publishing as fact.
Common tile sizes in India
600×600 mm is the most common floor tile size for living rooms and bedrooms in Indian homes today; 800×800 mm and larger formats are increasingly popular for a more seamless look with fewer grout lines. 300×300 mm and 300×450 mm remain standard for bathrooms and smaller wet areas where a large-format tile would need too much cutting. Rectangular 1200×600 mm (or 600×1200 mm laid vertically) is common for a plank-style look, especially in kitchens and living areas.
How this is calculated
Tiles needed = room area ÷ area of one tile, rounded up and inflated by your wastage percentage to cover cutting losses, breakage, and future replacements. Boxes needed = tiles needed ÷ tiles per box, rounded up — box counts (not loose tiles) are what you actually order, since most dealers don't split boxes. Adhesive is estimated at 4.5 kg per square metre for a standard 3–4 mm bed, and grout at 0.5 kg per square metre for a typical joint width — both scale directly with floor area, not tile count.
How much wastage to allow
10% is the standard allowance for a straightforward, square-to-the-wall layout. Diagonal laying (tiles set at 45°) needs closer to 15%, since every edge tile requires an angled cut and more offcuts go to waste. Complex layouts with multiple cuts around pillars, drains or irregular room shapes may need even more — when in doubt, round up to the next full box rather than order exactly to the calculated figure.
Adhesive and grout quantities
Tile adhesive (4.5 kg/m² for a 3–4 mm bed) and grout (0.5 kg/m² for standard joints) are both sold by weight, typically in 20 kg or 25 kg bags — round the calculator's kg figure up to the nearest full bag when ordering. Larger-format tiles (800×800 mm and above) sometimes need a thicker adhesive bed and a higher-strength adhesive grade; check the tile manufacturer's recommendation before buying a standard-grade adhesive for oversized tiles.
Frequently asked questions
How many tiles do I need for a 10×10 room?
A 10×10 ft room is about 9.3 m². With 600×600 mm tiles (0.36 m² each) and 10% wastage, that works out to roughly 29 tiles, or about 8 boxes at 4 tiles per box — enter your exact room size above to confirm.
How much tile adhesive do I need per square metre?
About 4.5 kg per square metre for a standard 3–4 mm adhesive bed. Larger tiles or an uneven subfloor may need a thicker bed and more adhesive.
How many tiles are there in a box?
It depends on tile size and brand — as a rough guide, 600×600 mm tiles usually come 4 to a box, 300×300 mm tiles about 10 to a box, and larger formats like 800×800 mm often just 2 to a box. Always check the specific box on the pack you're buying.
How much extra wastage should I add for diagonal tile laying?
15%, compared to the standard 10% for straight laying — diagonal layouts need an angled cut on every edge tile, producing more unusable offcuts.
How much grout do I need for tiling?
About 0.5 kg per square metre for a standard joint width, though wider joints or larger tiles with fewer joints per square metre will use somewhat less.
Building on your own land?
Building vs. buying — the real comparison
This calculator is for people building on land they already own. If you're still deciding between building yourself and buying a finished flat, this comparison covers the real costs and timelines of both.