Planning a bathroom renovation? Our Bathroom Tile Calculator helps you quickly estimate how many tiles you’ll need for your floor or walls. Simply enter your room dimensions, tile size, and waste percentage to get an accurate estimate in seconds.

Whether you’re renovating a small powder room or a large master bathroom, this calculator helps reduce material waste and prevents costly overbuying.

How to Use the Bathroom Tile Calculator

Using the calculator is simple:

1. Enter the bathroom’s length and width (or wall dimensions).
2. Choose your preferred measurement unit (feet, inches, meters, or centimeters).
3. Enter the tile dimensions.
4. Select a waste percentage (usually 10–15%).
5. Optionally enter the price per tile.
6. Click Calculate.

The calculator instantly shows:

• Total bathroom area
• Area covered by one tile
• Number of tiles required
• Extra tiles for waste
• Total tiles to purchase
• Estimated material cost

Bathroom Tile Formula

Bathroom Area

Area = Length × Width

Tile Area

Tile Area = Tile Length × Tile Width

Tiles Required

Tiles Required = Bathroom Area ÷ Tile Area

Total Tiles Including Waste

Total Tiles = Tiles Required × (1 + Waste Percentage)

Always round the result up to the nearest whole tile.

Example Calculation

Suppose your bathroom floor measures:

• Length: 10 ft
• Width: 8 ft

Bathroom Area:

10 × 8 = 80 sq ft

Tile Size:

12 × 12 inches

One tile covers:

1 sq ft

Without waste:

80 ÷ 1 = 80 tiles

Add 10% waste:

80 × 1.10 = 88 tiles

You should purchase 88 tiles.

Why Add Extra Tiles?

Adding extra tiles helps cover:

• Cutting around corners
• Broken tiles
• Future repairs
• Pattern matching
• Installation mistakes

Recommended Waste Percentage

Installation Type	Waste
Straight Layout	5–10%
Diagonal Layout	10–15%
Complex Patterns	15–20%

Common Bathroom Tile Sizes

Tile Size	Best For
4×4 inches	Shower walls
6×6 inches	Bathroom walls
12×12 inches	Small bathrooms
12×24 inches	Modern bathrooms
18×18 inches	Large bathrooms
24×24 inches	Luxury bathrooms