Construction

Tile Calculator

Tiles needed for floor. Fast, accurate, and completely free.

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Results
Tiles Required
611
Including 10% wastage

Tiling Breakdown

Floor Area
20.00 m²
Single Tile Area
0.3600 m²
Tiles (without wastage)
556
Extra for Wastage
55
Tile Adhesive (approx.)
80 kg
Grout (approx.)
6.5 kg

Mathematical Formula

N = \frac{A_{floor}}{A_{tile}} \times (1 + W\%)

N = Number of tiles required

Afloor = Room Length × Room Width (m²)

Atile = Tile Length × Tile Width (converted from cm² to m²)

W% = Wastage percentage for cutting, breakage, and pattern matching

Adhesive ≈ Floor Area × 4 kg/m² (for standard 6-8 mm bed thickness)

Grout = f(tile size, gap width, tile thickness ~8mm)

How to Use this Calculator

  1. Enter the Room Length and Width in meters.

  2. Enter the Tile Length and Width in centimeters (e.g., 60 cm × 60 cm for a standard vitrified tile).

  3. Set the Grout/Gap Width in millimeters (3 mm is standard for rectified tiles).

  4. Enter the Wastage percentage (10% is recommended for straight-lay patterns; use 15% for diagonal patterns).

  5. Review the total tiles needed, adhesive quantity, and grout estimate.

What is a Tile Calculator?

A tile calculator is an essential planning tool for any flooring or wall tiling project. It helps you determine the exact number of tiles, the amount of tile adhesive, and the grout quantity required to cover a given area. Accurate tile estimation prevents costly shortages (which may cause batch color mismatch) and excessive over-ordering.

Popular Tile Sizes in India

Indian tile manufacturers offer a wide range of sizes. The most popular floor tile sizes are:

  • 60 × 60 cm (2×2 ft): The most popular size for residential flooring, available in vitrified, glazed, and matte finishes.
  • 80 × 80 cm: Large-format tiles that create a seamless look with fewer grout lines.
  • 60 × 120 cm: Rectangular slab tiles popular for modern, minimalist interiors.
  • 30 × 30 cm (1×1 ft): Commonly used for bathroom and kitchen floors, balconies, and outdoor areas.
  • 30 × 45 cm: Standard wall tile size for kitchens and bathrooms.

Understanding Wastage

Wastage in tiling occurs due to cutting tiles to fit edges, corners, and around obstacles (pipes, columns, fixtures). The amount of wastage depends on the laying pattern:

  • Straight lay: 5-10% wastage — tiles are laid in a simple grid pattern.
  • Diagonal (45°) lay: 10-15% wastage — more cuts required at walls.
  • Herringbone / Chevron: 15-20% wastage — complex patterns require many angled cuts.
  • Random / Versailles pattern: 10-15% wastage depending on size variations.

Grout and Adhesive Estimation

Tile adhesive is applied in a 6-8 mm thick bed using a notched trowel. Approximately 4 kg of adhesive per square meter is the standard consumption rate for medium-format tiles on a level surface. For large-format tiles (≥80 cm) or uneven substrates, consumption may increase to 5-6 kg/m².

Grout fills the gaps between tiles. The amount depends on tile dimensions, gap width, and tile thickness. Our calculator uses the standard formula: Grout Volume = Gap Width × Tile Thickness × Total Joint Length, converted to kg using grout density (~1.6 kg/L).

Pro Tips for Tiling

  • Always buy tiles from the same lot/batch to ensure consistent shade and calibration.
  • Use tile spacers to maintain uniform grout lines.
  • Start laying tiles from the center of the room outward for a symmetrical finish.
  • Keep 2-3 extra tiles after installation for future repairs and replacements.

Frequently Asked Questions (FAQ)

How many 60×60 cm tiles are needed for 100 sqft?

100 sqft ≈ 9.29 m². Each 60×60 cm tile covers 0.36 m². So you need 9.29 / 0.36 ≈ 26 tiles without wastage. With 10% wastage, order approximately 29 tiles.

What grout width should I use?

For rectified (machine-cut, precise edge) tiles, use 2-3 mm grout width. For non-rectified tiles, use 3-5 mm. For natural stone or rustic tiles, 5-8 mm is typical. Wider grout lines give a more traditional look.

What is the difference between cement mortar and tile adhesive?

Cement mortar (cement + sand) is the traditional method but requires a thicker bed (15-20 mm) and skilled application. Tile adhesive is a polymer-modified thin-set material (6-8 mm bed) that offers stronger bonding, faster setting, consistent results, and works with vitrified and large-format tiles that do not bond well with plain cement.

Should I add wastage for wall tiles as well?

Yes. Wall tiling typically requires 8-12% wastage for straight-lay patterns. Add more (15%) if there are many cutouts for electrical outlets, switches, and plumbing fixtures.

Can I tile over existing tiles?

Yes, with proper preparation. The existing surface must be clean, level, and well-bonded. Use a high-strength modified adhesive rated for tile-on-tile application. This saves demolition time and cost but increases floor height by 10-15 mm.

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