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100x100 Tile Calculator
A 100x100 cm tile covers exactly 1 m², so the tile count equals your floor area. A 12 m² room takes 12 tiles, or 14 with 10% waste.
100x100 Tile Calculator
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About 100x100 Tile Calculator
A 100 by 100 centimetre tile covers exactly one square metre, so the raw count is simply the floor area. A 4 by 3 metre room of 12 square metres needs 12 tiles before waste and 14 with a 10 percent allowance. The size is already set on this page, so enter the room and the calculator handles the rounding. What makes this size different is not the arithmetic but the logistics. A 10 millimetre porcelain tile a metre square weighs roughly 23 kilograms and is easy to crack if it is carried flat, so it should be carried on edge, ideally by two people or with suction lifters. Check that it will physically fit through the door and up the stairs before ordering. The substrate needs to be flatter than for any smaller tile, and full adhesive coverage with back buttering is essential. Waste deserves careful thought. With only around a dozen tiles in a room, each offcut is a large piece of an expensive tile, so plan the layout on paper first and try to make each cut produce a piece that finishes another edge. Order at least one spare tile beyond the calculation, since a single breakage can otherwise stop the job. For a smaller format see 80x80 Tile Calculator, and for a larger one 120x120 Tile Calculator.
How to use 100x100 Tile Calculator
Choose metric or imperial, then enter the floor, wall or shower dimensions
Enter tile length and width in centimetres or inches
See tile count and optional box count in metric and imperial
Frequently Asked Questions
How many 100x100 tiles per square metre?
Exactly one. Each tile covers one square metre, so the number of tiles before waste equals your floor area in square metres.
How many 100x100 tiles for a 20 square metre room?
Twenty before waste and 22 with a 10 percent allowance. With so few tiles, an extra spare is worth having in case one breaks during cutting or laying.
How heavy is a 100x100 tile?
Roughly 23 kilograms for a typical 10 millimetre porcelain tile. Carry it on edge rather than flat, since a large tile can crack under its own weight when held horizontally.
Can one person lay 100x100 tiles?
It is possible with suction lifters, but two people make positioning far easier and reduce breakages. Placing a tile this size accurately into the adhesive bed is the hard part.
How do I reduce waste with large tiles?
Plan the layout on paper before cutting anything, so that offcuts from one wall can complete another. With large tiles each wasted piece is expensive.