Tile Calculator & Layout Planner

Tiles = every tile position, cut ones included, plus extra, in whole boxes: a 12 × 10 ft floor in 24 × 12 in tile has 60 positions, so 66 tiles with 10% extra, or 7 boxes of 10.

Your measurements

Example

Use the unit shown for each box, or type another one: 12 ft 6 in, 150 in, 3.8 m and 600 mm all work, as do the marks on a tape measure.

Surface 1

Length (ft) Width (ft) Surface shape An L-shaped room is a rectangle with one corner missing. Measure the overall length and width, then the missing corner. Obstacles on this surface A drain, toilet flange, niche or cabinet that the tile goes around.

Measure from Extra for cuts (%) The layout already counts a tile for each cut position. Extra adds more tiles for breakage, mistakes or spares before rounding to boxes. Compare patterns and starting points first; ask the supplier which spare pieces to keep.

Details Package sizes, prices and materials

Tile length Tile width Grout joint Tiles per box Calculated layout pattern By default each cut position consumes a tile. Choose the straight-piece offcut plan below to compare reuse with your blade loss. Grout coverage per package (sq ft) Mortar coverage per bag (sq ft) Your price per box ($) Tile orientation Starting offset across length Starting offset across width Offcut plan Reuse counts only rectangular pieces, without turning them. Confirm usable edges, matching pattern and batch with your installer. Angled and notched cuts still take their own tiles.

Example: replace these measurements

Your material list

7 boxes of tile

120 sq ft measured

Your measured layout

Cut pieces by size: 3 sizes
Pieces	Along the length × along the width	Cut
9	23.38 in × 12 in	straight
5	24 in × 10.88 in	straight
1	23.38 in × 10.88 in	straight

Top view of the calculated tile positions. Each cut piece uses a tile; offcuts are not reused. Sizes are the outside measurements of each cut piece; a piece cut around an obstacle is listed at its size before the notch.

Your shopping list

7 boxes of tile

Already have some? See what it covers

How many boxes of tile you have

Quantities and package details

Tile positions: 60
Full tile positions: 45
Cut tile positions: 15 (25%)
Different cut sizes: 3
Tiles before extra: 60
Tiles saved by straight-cut plan: 0
Tiles with extra: 66
Tiles in purchased boxes: 70
Surface area: 120 sq ft
Offcut area before reuse: 1.64 sq ft
Grout packages: Enter product coverage
Mortar bags: Enter product coverage
Tile subtotal: Add your box price

This is a geometric purchase allowance. Every cut position consumes a tile; no offcut reuse, blade kerf, edge qualification or installation approval is assumed.

The calculation

Surface 1: 45 full + 15 cut = 60 tile positions
60 × (1 + 10/100), rounded up = 66 tiles
ceil(66 / 10) = 7 boxes

Common questions

How much tile do I need?

Count the tile positions for your layout, add your extra for breakage and spares, and round up to whole boxes. This estimate uses one tile per cut position and does not reuse offcuts. The calculator does this for every surface and shows the count.

Does a herringbone or diagonal pattern need more tile?

Usually, because more tiles are cut at the edges. Switch the pattern in the details and compare the cut positions with a straight layout for the same room.

How do I avoid thin slivers of tile at the walls?

Move the starting point. The button under the drawing tries a grid of starting offsets and keeps the one with the fewest cuts it finds, then the widest narrowest cut. The cut list gives the size of every cut piece.

How do I tile an L-shaped room or go around a cabinet?

Choose L-shape for the surface and enter the missing corner. Add up to three obstacles per surface, such as a toilet flange or an island. The layout clips tiles around them, so the count matches the real floor.

How much grout and thinset do I need?

Divide the tiled area by the coverage on each bag. That coverage depends on the tile size, joint width and trowel the label names, so read it for your tile.

How to plan the quantity

Add each floor or wall as its own surface. Choose L-shape for a room with one corner missing, and add up to three obstacles per surface. Tile dimensions and the joint determine how many whole or cut pieces cross each edge. The list counts a tile for each position, then adds your chosen extra allowance.

The layout clips each tile position to the surface, its missing corner if it is L-shaped, and any obstacles you add to it. Straight and half-offset rows, a diagonal grid and a two-rectangle herringbone lattice have different cuts. Change orientation or starting offsets to compare borders, or let the planner try starting points and keep the one with the fewest cuts it finds. The cut list under the drawing gives the size of every cut piece. By default each cut position consumes one tile. The optional straight-piece stock plan combines rectangular cuts using your blade loss; angled and notched pieces stay separate.

Use grout and mortar coverage for the actual tile size, joint, depth and trowel. A package yield from another layout can produce the wrong shopping list.

Before you order

An opening rarely saves its area in whole tiles. Split large untiled areas into rectangles rather than subtracting small holes from a box count.
Check substrate preparation and movement-joint details with the installer before ordering setting materials.

Have prices moved?

Ceramic floor and wall tile cost 0.5% more in August 2026 than a year earlier (Bureau of Labor Statistics producer price index, preliminary).

What owners paid: the typical flooring, carpeting, paneling and ceiling tile job cost $3,000 in the 2023 Census survey.

Plan the work as well as the order: How to tile a floor or shower: backer, waterproofing and joints.

Before ordering, read the guide: How much tile do I need? Layout, cuts and boxes. Or choose another calculator.