Stud & StoneProduct index / home

Materials & quantities

Tile Quantity Calculator

Estimate whole tiles from floor area, tile dimensions, and an explicit cutting allowance.

Use this for a purchase count after measuring the install area; keep tile dimensions in centimetres and check pack sizes separately.

Your inputs

Use consistent units and a matching period throughout. Enter decimals with a dot or comma, without thousands separators.

Measured install area in square metres.

One tile length in centimetres; must be greater than zero.

One tile width in centimetres; must be greater than zero.

Explicit allowance for cuts and breakage.

Your result

Result for the default inputs

Whole tiles to plan for

294

Calculations run in this browser. Inputs are not sent to a server or added to a share link.

What the result means

The result rounds the calculated tile count upward. It is a purchase planning count, not a layout or pack-size check.

The formula

Ceiling(floor area * (1 + waste allowance / 100) / ((tile length / 100) * (tile width / 100)))

Results are displayed to at most two decimal places. Calculations use the unrounded inputs.

A worked example

Put the formula to work

Floor area (square metres)
24
Tile length (centimetres)
30
Tile width (centimetres)
30
Waste allowance (%)
10

Whole tiles to plan for: 294

Twenty-four square metres with ten percent allowance and 30 cm square tiles requires 294 whole tiles after rounding up.

How to use this calculator

  1. Measure the install area in square metres.
  2. Enter the actual tile dimensions in centimetres.
  3. Add a deliberate cutting and breakage allowance.
  4. Round to whole tiles, then convert to unopened packs.

Why this number matters

Tile area and waste are visible inputs, so the count can be checked against the planned layout and product packaging.

Input definitions

Floor area (square metres)
Measured install area in square metres.
Tile length (centimetres)
One tile length in centimetres; must be greater than zero.
Tile width (centimetres)
One tile width in centimetres; must be greater than zero.
Waste allowance (%)
Explicit allowance for cuts and breakage.

Assumptions and limitations

  • Diagonal layouts, borders, niches, and pattern matching can need more allowance than entered.
  • The result does not know tiles per box, shade lots, or retailer pack rules.
  • It is not installation, substrate, or structural advice.

Methodology

The default result and worked example use the same calculation functions as the interactive tool. The formula cannot verify the quality or scope of your source data.

Read our calculation methodology

Last updated .

Keep the context