TileQuantCoverage math for tile, thinset and grout — before you buy.

TileQuant

Coverage math for tile, thinset and grout — before you buy.

SectionsLatest
Grout224
Thinset & Mortar202
Tile Quantity8
Layout & Waste5
Sealing & Waterproofing5
Tile Quantity CalculatorsHow many tiles a room takes, with thinset and grout worked out from the tile size rather than a rule of thumb.455
Backsplash Tile CalculatorsTile for a kitchen backsplash, with the waste that a narrow strip full of outlets actually generates — plus the edge trim a floor never needs.168
  1. Trowel Size for Tile — The Notch Is Chosen by Coverage, Not by HabitThinset & Mortar · 3 min read

    The right notch is not a rule of thumb. Set one tile, pull it up, and look at the back — that is the actual specification.

  2. Waterproofing a Shower — Tile and Grout Are Not the WaterproofingSealing & Waterproofing · 3 min read

    The most expensive failure in a bathroom is a shower that looks perfect and has been leaking into the framing since the week it was built.

  3. Thin-Set Mortar Cost per Bag and per Square FootThinset & Mortar · 4 min read

    A bag of thin-set is nine dollars. How many bags you need is decided by the notch on your trowel, not by the tile.

  4. Thinset Coverage per Bag: 90 Square Feet or 25, and the Trowel DecidesTile Quantity · 3 min read

    The bag prints a coverage figure that assumes a trowel size it does not name. Change the notch and the same bag covers a third as much floor.

  5. What Size Trowel for Tile? Match the Notch to the Tile, Then Check the BackTile Quantity · 3 min read

    The chart gets you to the right aisle. What settles it is lifting one tile and looking at how much mortar actually touched it.

  6. How Many 12×12 Tiles in 100 Square Feet? 100 — Then Buy 110Tile Quantity · 3 min read

    The arithmetic gives a round number that is right and not enough. Two things separate the count from what you should put in the trolley.

  7. How Much Extra Tile to Buy: 10%, 15% or 20% — and What Sets the NumberTile Quantity · 3 min read

    Waste percentage is not a safety margin. It is a prediction about how many cut tiles produce a usable second piece, and the pattern decides it.

  8. How Many Tiles: Waste Allowance Is the Whole QuestionTile Quantity · 2 min read

    Dividing the floor area by the tile area is the easy part and nobody gets it wrong. The waste allowance is where jobs run short, and running short is expensive in a way that running over is not.

  9. Grout Quantity: Joint Width and Depth Drive It, Not Floor AreaTile Quantity · 2 min read

    Two identical floors can need wildly different amounts of grout. Area is the smallest term in the equation.

  10. Thinset Coverage: The Trowel Decides, Not the TileTile Quantity · 2 min read

    Thinset quantities are set by the notch size of your trowel, and the notch size is set by the tile. Get the first wrong and you either run out or fail to bed the tile.

  11. Lippage in Large-Format Tile: Why Offset Layouts Make It WorseLayout & Waste · 2 min read

    Large tiles are not flat, and the industry knows it. The layout you choose decides whether that curvature shows up as a lip you can feel with a bare foot.

  12. Sealing Stone Tile: What Sealer Does, and What It Cannot DoSealing & Waterproofing · 2 min read

    A sealer slows staining. It does not stop etching, and the difference between those two words is why so many marble countertops disappoint.

  13. Porcelain or Ceramic: One Number Separates ThemTile Quantity · 2 min read

    Porcelain is ceramic. The distinction is a single measured property, and everything else that differs between them follows from it.

Backsplash tile

168 calculations · Backsplash Tile Calculators · browse all

Grout joint width by tile size

19 calculations · Grout · browse all

Grout for a tiled area

200 calculations · Grout · browse all