Bathroom Tile Calculator(Tiles, Boxes, Wastage & Cost)
Estimate tiles, boxes, wastage, and cost.
Estimate bathroom tiles required with wastage and boxes. Adjust floor or wall size, tile size, box quantity, wastage, and price.
🕒 Last updated: April 15, 2026
Inputs
Tiles Required
33 tiles
Floor Area: 4.46 m²
Tile Area: 0.1800 m²
Tiles per Row (Width): 4
Rows Required (Length): 6
Full Tiles: 24
Cut Tiles: 9
Recommended Tiles
(Including 12% wastage)
37 tiles
Extra Tiles: 4
Boxes: 7
Continue with the same room and tile details.
Approximate results for planning only. Verify with a professional.
Quick tile calculation reference
- 300 × 300 mm tiles → ~11 tiles per m²
- 400 × 400 mm tiles → ~6.25 tiles per m²
- 600 × 600 mm tiles → ~2.78 tiles per m²
- 800 × 800 mm tiles → ~1.56 tiles per m²
- Recommended wastage → 5% to 10%
Popular tile calculator examples
Bathroom tile estimate
This page uses a slightly higher wastage for bathroom cutting and corners.
This page is pre-filled for this tiling use case. Change any input and the calculator results update from the active values.
- Bathroom area in feet.
- Wastage: 12%.
- Tile boxes included.
What is the purpose of this Tile Calculator?
In practical flooring and wall tiling projects, tile estimation is not just based on area. Factors such as tile layout pattern, cutting requirements, grout spacing, and room dimensions significantly affect the final quantity. This calculator provides a realistic estimate by considering both area and tile layout behavior.
Unlike basic tile calculators, this tool also estimates how tiles are arranged in rows and columns, and identifies tiles that need cutting at edges. This helps in planning installation more accurately and reduces unexpected material shortages during execution.
Accurate tile estimation is important because it helps:
- Avoid under-ordering or over-ordering tiles
- Reduce material wastage and cutting losses
- Plan project costs more accurately
- Ensure smooth installation without delays
- Optimize tile layout and design
In real-world tiling work, additional tiles are required due to cutting, breakage, and layout adjustments. This calculator includes wastage allowance to provide realistic and practical estimates.
Actual tile requirement may vary depending on layout pattern, grout spacing, tile cutting, and installation method. It is recommended to keep extra tiles for future repairs and replacements.
If you are wondering how many tiles you need for a floor or wall, this tile calculator helps you quickly estimate tile quantity based on room size and tile dimensions. It is useful for flooring, wall tiling, and renovation projects where accurate tile estimation is important.
How tile quantity calculation works (area + layout method)
Tile quantity calculation is done using two approaches: area-based estimation and layout-based calculation. While area gives a quick estimate, the layout method provides more accurate results by considering tile placement and edge cuts.
Step 1 — Floor Area
This gives the total surface area that needs to be covered with tiles. It is useful for quick estimation.
Step 2 — Tile Area
This represents the area covered by a single tile and helps estimate tile count using area division.
Step 3 — Layout (Tiles per Row and Column)
Rows Required = Floor Length ÷ Tile Length
This step determines how many full tiles fit along the width and length of the floor. Values are rounded down to count only complete tiles.
Step 4 — Full Tiles
These are the tiles that fit perfectly without any cutting.
Step 5 — Cut Tiles (Edge Tiles)
When the floor dimensions are not exact multiples of tile size, tiles need to be cut along edges. This step accounts for those additional tiles required due to cutting.
Step 6 — Total Tiles Required
This gives the actual number of tiles needed for complete coverage based on layout.
Step 7 — Wastage Allowance
Additional tiles are added to account for breakage, cutting losses, and installation patterns such as diagonal or staggered layouts.
Calculation example for Bathroom Tile Calculator
This example uses the active room or wall dimensions, tile size, box quantity, wastage, and optional tile price from this programmatic calculator page.
- Area Dimensions = 6 ft x 8 ft
- Tile Size = 300 mm x 600 mm
- Tiles per Box = 6
- Wastage = 12%
Step 1 - Calculate surface and tile area
Surface Area = 4.459 m²
Tile Area = 0.18 m²
Step 2 - Calculate layout tiles
Tiles per Row = 4
Tiles per Column = 6
Full Tiles = 24
Cut Tiles = 9
Tiles Before Wastage = 33
Step 3 - Add wastage and round purchase quantity
Recommended Tiles = 37
Boxes Required = 7
Step 4 - Estimate cost
Cost is shown when price per tile is entered.
For this page, the active layout estimates 33 tiles before wastage and 37 recommended tiles.
Tiles required per square meter (reference)
The following table shows approximate tiles required per square meter for common tile sizes. This helps in quick estimation before detailed layout calculation.
| Tile Size | Tiles per m² |
|---|---|
| 300 × 300 mm | ~11 tiles |
| 400 × 400 mm | ~6.25 tiles |
| 600 × 600 mm | ~2.78 tiles |
| 800 × 800 mm | ~1.56 tiles |
When should you use this tile calculator?
- Estimating tiles for flooring or wall cladding
- Planning tile layout before installation
- Calculating tiles for renovation projects
- Comparing tile sizes and material requirements
Limitations of tile estimation
This calculator provides an estimate based on rectangular areas and standard layouts. It does not account for irregular room shapes, design patterns, or tile alignment preferences. Actual requirements may vary depending on site conditions.
This calculator is based on standard construction practices and commonly used tile estimation methods in civil engineering.
Disclaimer: This calculator provides approximate results for planning and estimation purposes only. Actual requirements may vary based on site conditions, materials, workmanship, and local building regulations. Always consult a qualified engineer, architect, or construction professional before making final decisions.