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Bathroom Tile Calculator

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Result

Floor area7.5
Wall area26.4
Total area33.9
Tiles required434
↗ Construction

Bathroom Tile Calculator Estimate how many tiles you need to tile a bathroom floor and walls. Enter the floor dimensions, the wall height and perimeter, your tile size and a wastage allowance, and the calculator works out the floor area, wall area, total — free online calculator.

Formula

FloorArea = L×W; WallArea = Perimeter×Height; Tiles = ⌈TotalArea/TileSize² × (1+Wastage%)⌉
  • Bathroom Tile Calculator calculates its result from Floor Length, Floor Width, Wall Height, Wall Perimeter, Tile Size (square), Wastage Allowance. It uses the formula FloorArea = L×W; WallArea = Perimeter×Height; Tiles = ⌈TotalArea/TileSize² × (1+Wastage%)⌉. Change any input to recalculate the result instantly.
  • The main inputs are Floor Length, Floor Width, Wall Height, Wall Perimeter, Tile Size, Wastage Allowance. Enter them in the units and format shown in the calculator.
  • Keep measurements and project assumptions consistent before comparing or combining values.
  • Changing any input above recalculates the result with the same calculation engine used by this page.

Example: Bathroom Tile

Inputs
  • Floor Length: 3
  • Floor Width: 2.5
  • Wall Height: 2.4
  • Wall Perimeter: 11
  • Tile Size: 0.3 square
  • Wastage Allowance: 15

For floor 3 × 2.5, wall height 2.4, perimeter 11, tile side 0.3 and 15% waste: floor = 7.5, walls = 26.4, total = 33.9 square units; tiles required = 434.

Sample result: Calculating…

Frequently asked questions

What does the Bathroom Tile calculate?

Bathroom Tile Calculator Estimate how many tiles you need to tile a bathroom floor and walls. Enter the floor dimensions, the wall height and perimeter, your tile size and a wastage allowance, and the calculator works out the floor area, wall area, total — free online calculator.

Which values should I enter?

Enter Floor Length, Floor Width, Wall Height, Wall Perimeter, Tile Size, Wastage Allowance using the units and format shown beside each field.

What formula does this calculator use?

The calculator uses the following relationship: FloorArea = L×W; WallArea = Perimeter×Height; Tiles = ⌈TotalArea/TileSize² × (1+Wastage%)⌉.

Why might my result differ from another source?

Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.

Does the result update automatically?

Yes. Changing an input updates the result using the same calculation engine shown on this page.

Page information

Updated: October 10, 2026