Tile Calculator

This tile calculator tells you exactly how many tiles — and how many boxes — to buy for any floor, wall, or backsplash project. The method is simple: it divides your room area by the area of a single tile, then adds a wastage allowance for cuts. Getting the quantity right upfront saves you from the two classic disasters of an Indian home renovation: running out mid-job (when the shade lot has changed between production batches and the new tiles never quite match), or over-buying so badly that you are left paying for several unopened boxes you can never return.

Who this is for

It is meant for homeowners planning a flooring upgrade, anyone doing up a new flat before possession, and small contractors who want a quick, defensible quantity to share with a client. Because tiles in India are sold by the box and priced per box (or per square foot), the tool reports both the tile count and a box count so you can walk into a Kajaria, Somany, or Orientbell showroom and ask for an exact number.

The formula and method

The calculation works entirely in square metres internally to avoid rounding drift, then converts for display. Room area = Length × Width. Tile area = (tile length × tile width), converting cm to metres by dividing by 10,000 (since 1 m² = 10,000 cm²). Tiles needed = Room area ÷ Tile area, and finally Tiles to buy = Tiles needed × (1 + wastage%), rounded up. The result is then grouped into boxes. Always round up — you cannot buy two-thirds of a tile, and a few spares are exactly what you will want for future repairs.

Why wastage percentage matters

No tiling job is waste-free. Cuts are unavoidable at walls, around door frames, drain points, and in corners. The standard recommendation is 10% extra for a straight (grid) lay and 15% for a diagonal (45°) pattern, which produces more edge cuts. For herringbone, basket-weave, or rooms cluttered with obstacles like kitchen islands and built-in wardrobes, budget 20%. Keeping a few extra tiles is wise because patterns and shade lots get discontinued within a year or two, making an exact match later almost impossible.

Worked example — a 4 m × 3 m living room (with ₹ cost)

Take a typical 4 m × 3 m living room, which is 12 m². Using popular 60×60 cm tiles, each tile covers 0.36 m². So 12 ÷ 0.36 = 33.3 tiles before wastage — round to 34. Adding 10% straight-lay wastage gives 33.3 × 1.10 = 36.6, rounded up to 37 tiles. If a box holds 4 large-format tiles, that is 10 boxes. Now the money: suppose the showroom quotes ₹55 per square foot. Twelve square metres is about 129 sq ft, plus 10% wastage ≈ 142 sq ft of tiles, so the tile cost is roughly 142 × ₹55 ≈ ₹7,810 before adhesive, grout, skirting, and labour. Switching to 80×80 cm tiles (0.64 m² each) drops the count to about 19 tiles plus wastage — fewer joints, a cleaner look, but usually a higher per-box price.

Tile sizing — Indian market

In India, floor tiles are sized in centimetres. The most common large-format sizes are 60×60 cm, 80×80 cm, and 60×120 cm for living rooms and modern apartments. Bedrooms and smaller rooms often use 30×60 cm or 40×40 cm, while kitchen and bathroom wall tiles are commonly 30×45 cm or 30×60 cm. Major manufacturers (Kajaria, Somany, Asian Granito, Nitco, Johnson, Orientbell) all follow these standards. Box counts vary: large-format tiles often come 4 to a box, smaller sizes 10 — this calculator groups by 10 as a common default, so always reconcile against the actual box.

Common mistakes

The most frequent error is buying the exact tile count with no wastage, then falling short by three or four tiles near the end. The second is ignoring shade-lot (batch) matching — order all your tiles together and confirm they share a batch number, because the same SKU bought two weeks apart can differ visibly in tone. The third is forgetting that the calculator covers tiles only: adhesive, grout, spacers, skirting, and labour are separate line items in the final ₹ estimate. Finally, for L-shaped or irregular rooms, do not measure the longest length and width as one rectangle — split the floor into rectangles, calculate each, and add them up.