Start in the centre. See the edges.

Centred tile layout.
Balanced cuts, clearly.

Model a straight grid in one rectangular room. Use your actual tile size and chosen gaps to see the equal edge pieces, laid positions and a simple top view.

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1Your rectangle

Every starting value is an editable example. The 3 mm joint and 10 mm perimeter gap are chosen inputs for the illustration, not spacing recommendations.

Room length (m)

Room width (m)

The diagram runs length left to right and width top to bottom. This model assumes four straight, square boundaries.

2Actual tile size

Tile length (mm)

Tile width (mm)

Use the actual dimensions for the tile product you intend to use. Tile length runs along room length unless you turn the orientation below.

Turn tiles 90° — swap length and width

3Your chosen gaps

Interior grout joint (mm)

Between neighbouring tile positions.

Perimeter gap (mm)

The same gap on each of the four sides.

Zero is accepted as a mathematical input. Use product and project requirements when choosing real gaps; this calculator does not specify them.

Results update as you type. Inputs stay in this browser tab and are not saved or sent by the calculator. Privacy details.

Your balanced grid

—

—laid positions

—full-size positions

—cut-size positions

Top view with proportional rectangles. Fine joints and very small cuts may be hard to see; use the exact dimensions in the piece list. Hover over a position for its row, column and size.

Full sizeOne dimension cutTwo dimensions cut

Finished piece sizes

Dimensions run along room length × room width. “Edge” means one reduced dimension; “corner” means two, including a single position that needs both dimensions reduced.

Position type	Piece dimensions	Quantity

How it fits

After perimeter gaps
Tile orientation
Balanced left / right width
Balanced top / bottom height
Interior joint lines

These are laid positions and finished piece sizes, not tiles to buy or saw cuts to make. Offcut reuse, blade loss, breakages, openings, obstacles and installation tolerances are not modelled. This is a geometry plan, not installation advice.

Estimate whole tile boxes and a budget →

01 / FIT

Find a grid that spans the room

The model removes your perimeter gap on both sides of each axis, then finds the smallest number of tile positions that can span that distance with your interior joints.

02 / BALANCE

Keep opposite cuts equal

Any reduction is shared between the two ends of each axis. Positions between those ends keep their full tile dimension. A one-position axis uses one centred piece.

03 / CHECK

Separate layout from ordering

Compare the dimensions with your real room and tile product. Read the worked layout example, then use the box planner for an area-based order estimate.

Centred tile layout.Balanced cuts, clearly.