Trade & Construction

Tile Calculator

Trade & Construction

Tile Calculator

Live answer73 tiles10 boxes at 8/box · module 0.182709 m²

Area to tile (m²)Measure the floor or wall area after excluding spaces that will not be tiled.Tile length (mm)Tile width (mm)Grout joint (mm)Used as a layout allowance around each tile for planning coverage.Waste allowance (%)Use more for diagonal layouts, small rooms, pattern matching or many cuts.Tiles per box (tiles)

Live result73 tiles10 boxes at 8/box · module 0.182709 m²

Formula used

Effective tile module area = ((tile length + grout joint) ÷ 1000) × ((tile width + grout joint) ÷ 1000). Base tiles = area ÷ module area. Tiles with waste = ceil(base tiles × (1 + waste percent ÷ 100)). Boxes = ceil(tiles with waste ÷ tiles per box).

This is the method behind the answer, so the result can be checked rather than simply trusted.

Live math canvas

Your numbers, formula and explanation together

Tile Calculator: 73 tiles. 10 boxes at 8/box · module 0.182709 m²

Formula applied

The exact method behind this answer

CalculationTime keeps the method visible so the number can be checked instead of blindly trusted.

Effective tile module area = ((tile length + grout joint) ÷ 1000) × ((tile width + grout joint) ÷ 1000). Base tiles = area ÷ module area. Tiles with waste = ceil(base tiles × (1 + waste percent ÷ 100)). Boxes = ceil(tiles with waste ÷ tiles per box).

Apply the formulaEffective tile module area = ((tile length + grout joint) ÷ 1000) × ((tile width + grout joint) ÷ 1000). Base tiles = area ÷ module area. Tiles with waste = ceil(base tiles × (1 + waste percent ÷ 100)). Boxes = ceil(tiles with waste ÷ tiles per box).73 tiles10 boxes at 8/box · module 0.182709 m²

Your live breakdown

Current inputs in the calculation

These values come from the controls above and update when the calculator changes.

Area to tile: 12 m²
Tile length: 600 mm
Tile width: 300 mm
Grout joint: 3 mm
Waste allowance: 10 %
Tiles per box: 8 tiles

Resulting answer

73 tiles

10 boxes at 8/box · module 0.182709 m²

Answer: 73 tiles
Live support: 10 boxes at 8/box · module 0.182709 m²

Assumptions used

What this answer assumes

Quantity estimate only. Confirm layout, batch and spare-tile needs before ordering.

Area is entered in square metres and tile dimensions are entered in millimetres.
The grout joint is treated as a layout module allowance, not as proof of actual grout volume or installation compliance.
Waste allowance covers cutting, breakage, pattern matching and spare tiles, but the right allowance depends on layout and room complexity.
The calculator rounds tile count and box count up because partial tiles and partial boxes cannot normally be purchased as exact fractions.

Master’s Tip

How to use the result well

Master’s Tip: sketch the first row and last row before ordering. A neat area calculation can still leave awkward slivers at walls, extra waste on diagonals, or a need for spare matching tiles from the same batch.

Printable record

What belongs in the saved calculation

Save the inputs, result, formula, assumptions, page URL and date together so the calculation can be reviewed later.

Area to tile: 12 m²
Tile length: 600 mm
Tile width: 300 mm
Grout joint: 3 mm

What-if check

Waste and box sensitivity

Same measured area and tile size, with different waste allowances. This makes the order quantity easier to discuss with a supplier or tiler before buying full boxes.

Waste	Tiles to order	Boxes / spare tiles
5.0%	69	9 boxes · 3 spare
10.0%	73	10 boxes · 7 spare
15.0%	76	10 boxes · 4 spare
20.0%	79	10 boxes · 1 spare

Visual proof

Tile module

12.00 m² ÷ 0.1827 m² per module = 65.68 base tiles. Current order: 73 tiles, rounded to 10 boxes.

Visual grid

This result measures part of the space you live in

Length, area, volume and material estimates are grid problems too: measure the space, account for edges and allowances, then turn the pattern into a number you can use.

Micro-timehours, minutes, shiftsHuman scaledays, weeks, projectsMacro-timemonths, years, calendars

Measured output73 tiles

Space calculations turn a real surface, room, run or volume into cells, edges and allowances that can be quoted, ordered or checked.

73 tiles10 boxes at 8/box · module 0.182709 m²

Inputs

Area to tile: 12 m²
Tile length: 600 mm
Tile width: 300 mm
Grout joint: 3 mm
Waste allowance: 10 %
Tiles per box: 8 tiles

Method

For a 12 m² area and 600 × 300 mm tiles with a 3 mm grout joint, the module is 0.603 × 0.303 = 0.182709 m². Base tiles = 12 ÷ 0.182709 = 65.68. Add 10% waste and round up: ceil(72.25) = 73 tiles. With 8 tiles per box, ceil(73 ÷ 8) = 10 boxes.

Assumptions

Area is entered in square metres and tile dimensions are entered in millimetres.
The grout joint is treated as a layout module allowance, not as proof of actual grout volume or installation compliance.
Waste allowance covers cutting, breakage, pattern matching and spare tiles, but the right allowance depends on layout and room complexity.
The calculator rounds tile count and box count up because partial tiles and partial boxes cannot normally be purchased as exact fractions.

Notes

Use this space on the printed report for client, supplier, classroom, job-location, measurement, quote or approval notes.