Tile Calculator

Calculate how many tiles you need for any area with waste percentage included.

The Tile Calculator determines exactly how many tiles you need to cover any floor, wall, or backsplash area. Enter your room dimensions and tile size, set a waste percentage to account for cuts and breakage, and instantly see the total number of tiles required along with the total area covered. This tool eliminates guesswork from your tiling project so you buy the right quantity on your first trip to the store.

Calculating tiles...
Your data stays in your browser
Tutorial

How to Use the Tile Calculator

1
1

Enter Your Room Area

Type the total area in square feet that you want to tile for your project.

2
2

Set Tile Dimensions

Enter the width and height of a single tile in inches to calculate its coverage area.

3
3

Add Waste Percentage

Set the waste percentage to account for cuts, breakage, and pattern matching during installation.

4
4

Read Your Results

View the total number of tiles needed and the total area covered including the waste buffer.

Guide

Complete Guide to Tile Calculation

Why Accurate Tile Estimation Matters

Buying too few tiles means a second trip to the store and the risk that tiles from a different production batch will not match your originals in color or texture. Buying too many wastes money and leaves you with boxes of unused material. Accurate estimation balances both risks by calculating the exact quantity plus a reasonable waste buffer for cuts and breakage.

Understanding Tile Sizes and Coverage

Tile sizes range from tiny one-inch mosaics to large-format slabs measuring 24 by 48 inches or more. The size you choose affects both the number of tiles needed and the waste percentage. Larger tiles cover more area per piece but produce more waste at edges because each cut discards a bigger offcut. Smaller tiles fit irregular spaces more easily but require more grout lines.

How Waste Percentage Works

Waste percentage adds a safety buffer to your tile count to cover cuts at walls and obstacles, accidental breakage during installation, and defective tiles in the batch. A standard ten percent waste factor works for straightforward rectangular rooms. Diagonal layouts, L-shaped rooms, or spaces with many cutouts around plumbing fixtures should use fifteen percent or higher to stay safe.

Tips for a Successful Tiling Project

Always dry-lay your tiles before applying adhesive to check the pattern and minimize narrow cuts at edges. Order all tiles from the same production lot to ensure consistent color. Keep a few spare tiles after installation for future repairs since matching discontinued styles can be impossible. Accurate calculation from the start makes every one of these steps simpler and more cost effective.

Examples

Worked Examples

Example: Standard Kitchen Floor

Given: Room area 150 sq ft, tile size 12 x 12 inches (1 sq ft each), waste 10%.

1

Step 1: Tile area = 12 x 12 = 144 sq in = 1.00 sq ft.

2

Step 2: Base tiles needed = 150 / 1.00 = 150 tiles.

3

Step 3: Waste tiles = 150 x 0.10 = 15 tiles.

4

Step 4: Total tiles needed = 150 + 15 = 165 tiles.

Result: You need 165 tiles to cover 150 sq ft with 10% waste included.

Example: Bathroom with Small Tiles

Given: Room area 48 sq ft, tile size 6 x 6 inches (0.25 sq ft each), waste 15%.

1

Step 1: Tile area = 6 x 6 = 36 sq in = 0.25 sq ft.

2

Step 2: Base tiles needed = 48 / 0.25 = 192 tiles.

3

Step 3: Waste tiles = 192 x 0.15 = 28.8, rounded up to 29 tiles.

4

Step 4: Total tiles needed = 192 + 29 = 221 tiles.

Result: You need 221 tiles to cover 48 sq ft with 15% waste included.

Use Cases

Practical Use Cases

Kitchen Floor Tiling

Enter your kitchen floor area and the dimensions of your chosen ceramic tiles to find out exactly how many boxes to purchase. Adding a ten percent waste factor ensures you have enough spare tiles for cuts around cabinets, doorways, and irregular edges.

Bathroom Wall Tiles

Measure your bathroom wall area and input the dimensions of your subway or mosaic tiles to calculate the total quantity needed. A higher waste percentage around fifteen percent is recommended for walls since vertical cuts and outlets require more trimming.

Backsplash Renovation

Calculate the number of small decorative tiles needed for a kitchen backsplash by entering the area between your countertop and upper cabinets. Even a compact backsplash benefits from accurate tile counts to avoid multiple trips and mismatched dye lots.

Frequently Asked Questions

?Is this tile calculator free to use?

Yes, the tile calculator is completely free with no registration, no ads, and no hidden fees required to use.

?What waste percentage should I use?

Most professionals recommend ten percent for simple layouts and fifteen percent for diagonal or complex patterns.

?Can I use this for wall tiles too?

Yes, enter the wall area in square feet and the tile dimensions and the calculator works for any surface.

?Does it work with metric measurements?

Currently the calculator uses square feet and inches. Convert your metric measurements before entering them into the fields.

?How accurate is the tile count?

The count is mathematically precise. Actual needs may vary slightly due to room shape and tile pattern layout.

?Is my data private when using this tool?

Absolutely. All calculations run locally in your browser and no measurement data is sent to any server.

Related Tools

Help us improve

How do you like this tool?

Every tool on Kitmul is built from real user requests. Your rating and suggestions help us fix bugs, add missing features and build the tools you actually need.

Rate this tool

Tap a star to tell us how useful this tool was for you.

Suggest an improvement or report a bug

Missing a feature? Found a bug? Have an idea? Tell us and we'll look into it.

Recommended Reading

Recommended Books on Measurement & Home Improvement

As an Amazon Associate we earn from qualifying purchases.

Boost Your Capabilities

Products for Tile Measurement & Installation

As an Amazon Associate we earn from qualifying purchases.

Newsletter

Get Free Productivity Tips & New Tools First

Join makers and developers who care about privacy. Every issue: new tool drops, productivity hacks, and insider updates — no spam, ever.

Priority access to new tools
Unsubscribe anytime, no questions asked