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FLOORING & TILES

Tile Calculator.

Estimate whole tiles from surface area and the actual face dimensions of one tile, then add a cutting allowance. Advanced mode converts that requirement into complete boxes and can add a spare-tile reserve.

Use feet/inches or metres/centimetres consistently for the surface and tile size, then add realistic cutting waste.

IMPERIAL + METRIC · LIVE CALCULATION
TILE CALCULATOR — CALCULATE
Calculator mode
Calculated result: 133 tiles
YOUR RESULT133 tiles

120 ft² of surface with 10% cutting allowance.

BASE BREAKDOWN
Surface area120 ft²
One tile1 ft²
Buy133 whole tiles
Calculated in your browser
HOW IT WORKS

Formula and calculation method.

Tiles = ceiling((surface area × (1 + waste ÷ 100)) ÷ tile face area)

Surface length and width create the area to cover. Tile length × tile width creates one tile face area. Waste increases the required covered area before division, and the base count rounds upward to a whole tile. Advanced mode adds spare tiles and rounds again to complete boxes.

WORKED EXAMPLES

See the material estimate in context.

Straight 12-inch tile layout

12 ft × 10 ft surface, 12 in × 12 in tiles, 10% waste

Result: 132 whole tiles before Advanced box rounding.

Enter the supplier tiles-per-box value in Advanced mode to obtain complete boxes.

Large-format metric tile

4 m × 3 m floor, 60 cm × 60 cm tiles, 10% waste

Result: 37 whole tiles before packaging.

Large tiles can create substantial unusable offcuts around edges, so layout still matters.

USE IT CAREFULLY

Assumptions and common mistakes.

Assumptions

  • The tiled surface is rectangular.
  • Tile dimensions are face dimensions.
  • The waste percentage covers cuts and breakage.
  • Grout-joint width is not used to reduce the purchase count.

Mistakes to avoid

  • Mixing centimetres and metres without conversion.
  • Ordering the exact theoretical tile count with no cutting allowance.
  • Forgetting to remove permanent areas that will not be tiled.
  • Ignoring box quantities and dye-lot consistency.
EDGE CASES

Handle unusual projects explicitly.

Diagonal or patterned layouts

Increase waste because diagonal cuts and pattern matching usually produce more offcuts.

Multiple rooms

Calculate irregular or separate areas individually and combine the purchase requirement.

Tiles sold by box

Advanced mode rounds the tile requirement plus your spare reserve to complete boxes using the supplier quantity.

LIMITATIONS

What the estimate leaves out.

This is an area takeoff, not a tile-layout engine. It does not place grout joints, centre patterns, optimise cuts or calculate adhesive and grout.

FAQ

Material planning questions.

What waste percentage should I use for tile?

Around 10% is common for straightforward layouts. Complex, diagonal or patterned work often needs more.

Does grout spacing reduce the number of tiles?

The calculator uses tile face area and does not credit grout joints. This is intentionally conservative for purchasing.

Can it calculate boxes?

Yes. Advanced mode accepts tiles per box, adds any spare tiles you request and rounds upward to complete boxes.

PRACTICAL GUIDE

Tile Calculator guide

A tile estimate starts with two areas: the surface you intend to cover and the face area of one tile. FigureNest then adds the waste percentage you choose and rounds up to a whole tile. This is useful for a first ordering estimate for rectangular floors, walls, backsplashes, and similar surfaces.

Waste is not a universal constant. Straight layouts in simple rooms usually create fewer unusable offcuts than diagonal, herringbone, mixed-format, or obstacle-heavy layouts. Treat the waste field as a project assumption rather than a recommendation that fits every installation.

FORMULA AND VARIABLES

How the calculation works.

Formulatiles = ceiling((surface area × (1 + waste ÷ 100)) ÷ tile face area)
  • surface area = surface length × surface width after converting both to compatible units
  • tile face area = tile length × tile width after converting tile dimensions to the same area basis
  • waste = extra percentage entered for cuts, breakage, selection, and spare material
  • ceiling = round upward because a fraction of a tile must be purchased as another whole tile
WORKED EXAMPLE

Follow the numbers in context.

12 ft × 10 ft floor with 12 in × 12 in tiles

The surface is 120 ft² and each 12 in × 12 in tile is 1 ft², so the theoretical coverage count is 120 tiles. With 10% waste the planning quantity is 132 tiles. Packaging is separate: if the chosen product contains 10 tiles per box, 132 tiles requires 14 whole boxes, not 13.2.

3 m × 2.4 m wall with 300 mm × 600 mm tiles

The wall is 7.2 m². A 300 mm × 600 mm tile is 0.3 m × 0.6 m = 0.18 m², so theoretical coverage is 40 tiles. At 10% waste the estimate becomes 44 tiles before box rounding.

WHAT THE RESULT TELLS YOU

Use the number for the question this tool answers.

The result is an ordering estimate in whole tiles based on area plus your selected waste allowance. It is not an exact installation layout.

A higher waste percentage increases the purchase quantity but does not change the measured surface. Keeping a few matching spare tiles can be useful because later production batches may differ.

Compare the calculated tile count with the product’s box coverage and the planned layout before purchase. When those disagree materially, the actual layout and current product packaging should control the order.

More detail: inputs, assumptions, mistakes and edge cases
HOW TO USE IT

Build a dependable estimate.

  1. Measure the surface that will actually be tiled. For an L-shaped room, split it into rectangles and add the areas; for walls, calculate each tiled wall or section separately.
  2. Enter the actual tile face dimensions and the correct unit system. Do not mix feet with metres or inches with millimetres without conversion.
  3. Choose a waste allowance that reflects the layout, room shape, cuts, breakage risk, tile variation, and whether you want repair spares. Complex patterns can require materially more waste than a simple grid.
  4. After getting the tile count, check the manufacturer or retailer label for tiles or coverage per box and round up to complete boxes.
  5. Before ordering, confirm the layout and product-specific requirements with the current tile documentation or installer, especially for patterned work, wet areas, movement joints, and large-format tiles.
UNITS AND INPUTS

Keep measurements compatible.

Surface dimensions and tile dimensions may be entered in different displayed scales only when the calculator converts them consistently. In imperial work, remember that 12 inches = 1 foot and 144 in² = 1 ft²; in metric work, 1,000 mm = 1 m.

Tile count is a whole-piece quantity, while surface and tile area are continuous measurements. The final count therefore rounds upward.

This calculator uses tile face size for coverage. It does not model the exact row-and-column layout or grout-joint spacing.

ASSUMPTIONS AND LIMITATIONS

Know what the result includes.

Assumptions

  • The entered length and width represent the net rectangular surface being estimated.
  • Tiles are represented by their rectangular face dimensions and are assumed to cover the calculated area without modeling an exact laying pattern.
  • The entered waste percentage is deliberately supplied by the user because appropriate waste depends on the project.

Limitations

  • The result does not calculate grout, adhesive, membrane, trim, spacers, movement joints, substrate preparation, labour, or installation cost.
  • It does not lay out individual rows and columns, include grout-joint width in module dimensions, or optimize reuse of offcuts. Those details can change the practical tile count, particularly for small mosaics, wide joints, borders, or complex patterns.
  • Openings, cabinets, islands, niches, stairs, curved surfaces, and irregular rooms must be reflected in the measured tiled area rather than assumed by the calculator.
  • Box quantities, dye lots, calibre, breakage policy, and replacement-stock needs depend on the specific product and supplier.
COMMON MISTAKES

Avoid preventable errors.

  • Using room dimensions when only part of the room will be tiled, or subtracting an obstacle that will actually be tiled beneath or behind.
  • Treating a 10% waste entry as a rule for every project. Diagonal, herringbone, borders, many corners, and large awkward cuts can need a different allowance.
  • Mixing units—for example, treating a 600 mm tile as 600 cm or comparing square inches directly with square feet.
  • Rounding the theoretical tile count down. Ordering quantities must cover the full surface and are normally rounded upward to whole tiles and then whole boxes.
  • Assuming the tile count includes grout and adhesive. Those products have their own coverage methods and manufacturer instructions.
EDGE CASES

Check unusual inputs carefully.

A zero or negative surface or tile dimension does not describe a usable coverage calculation and should be corrected before estimating.

For several disconnected surfaces using the same tile, calculate each carefully or add their net areas before applying a waste strategy that makes sense for the combined job.

Very small tiles or mosaics sold on sheets are often purchased by sheet coverage rather than by individual chip count; use the package coverage when ordering.

If a pattern uses multiple tile sizes, a single tile-face-area calculation cannot determine the mix. Follow the pattern or manufacturer coverage specification.

FAQ

Questions about this calculation.

How does the calculator work out the number of tiles?

It divides the tiled surface area, increased by your chosen waste percentage, by one tile’s face area and rounds upward to a whole tile.

What waste percentage should I enter?

There is no universal value. A simple straight layout often needs less extra material than diagonal, herringbone, patterned, or obstacle-heavy work. Use the layout, room geometry, installer or supplier guidance, and desired repair stock to choose the allowance.

Does the result include grout joints?

No. FigureNest uses the tile face dimensions for an area-based estimate and does not model exact rows, columns, or grout-joint spacing.

How do I turn tiles into boxes?

Check the selected product’s current tiles-per-box or area-per-box label and round upward to complete boxes. Packaging varies by product.

Can I use this for wall tiles?

Yes for a rectangular tiled wall area. Measure the portion actually being tiled and handle windows, doors, niches, or untiled sections in the surface measurement.

Why might an installer order more than this result?

A real layout can require extra material for pattern matching, awkward cuts, breakage, shade selection, future repairs, or product-specific installation requirements that an area-only calculator cannot see.

RELATED TOOLS AND GUIDES

Continue the calculation.

Square Footage CalculatorMeasure rectangular floor or wall areas and combine equal spaces.Flooring CalculatorEstimate purchase area for flooring products sold by coverage.Construction materials estimatingReview measuring, waste, packaging, and ordering practices before buying materials.
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