What is the Tile Calculator?

The Tile Calculator helps you determine exactly how many tiles you need for your flooring or wall tiling project. Instead of guessing or over-purchasing, you can input your room dimensions, tile size, and layout preferences to get a precise tile count — including waste allowance for cuts and breakage.

Smart calculation: This tool handles complex math for you, accounting for grout spacing, laying patterns, and area deductions — ensuring you purchase the right amount of materials the first time.

Whether you are tiling a simple rectangular floor, an L-shaped room, or calculating wall tiles for an entire room perimeter, this tool handles the math for you. It accounts for grout spacing, laying patterns (straight, brick offset, or diagonal), and lets you deduct areas for doors and windows.

Precise Measurements

Calculate exact tile quantities for any room shape and size.

Multiple unit support
Complex room shapes
Accurate waste calculation

Cost Estimation

Get instant cost breakdowns including tiles and grout materials.

Price per tile calculation
Grout cost estimation
Total project budget

Visual Preview

See how your chosen pattern will look before purchasing materials.

Real-time tile layout
Pattern visualization
Deduction preview

Table of Contents

1. What is the Tile Calculator?
2. How to Use the Tile Calculator
3. Features
4. Frequently Asked Questions

How to Use the Tile Calculator

Follow these simple steps to calculate your tile requirements accurately and efficiently:

Choose Your Mode

Select Floor for floor tiling or Wall for wall tiling. Wall mode uses room dimensions (Length × Width × Height) to automatically calculate the perimeter wall area using the formula 2 × (L + W) × H.

Set Measurement Unit

Choose from meters (m), centimeters (cm), inches (in), or feet (ft) using the unit dropdown to match your preferred measurement system.

Enter Area Dimensions

For floor mode, pick a shape (Rectangle, L-Shape, or Triangle) and enter the measurements. For wall mode, enter the room's length, width, and ceiling height.

Select Tile Size

Use a preset (30×30, 40×40, 60×60, etc.) or enter custom width and height in centimeters. For rectangular tiles, choose horizontal or vertical orientation.

Pick Laying Pattern

Choose Straight, Brick/Offset, or Diagonal 45°. Each pattern affects waste differently and creates a unique visual appearance.

Adjust Grout and Waste

Set the grout width (0–10 mm) and waste percentage (0–25%). Use the waste presets for quick selection: 5% for simple layouts, 10% standard, 15% for complex cuts.

Deduct Openings

Click the Deduct button to subtract door and window areas. Use the Door and Window presets for standard sizes or enter custom dimensions.

Review Results

See the total tiles needed, net area, tiles without waste, boxes required, and estimated cost. Export the report as PDF if needed.

Adding Multiple Areas

Click Add Area (or Add Room in wall mode) to calculate tiles for multiple zones. Each area is calculated independently, and the total is summed up in the results section.

Pro tip: For large projects with multiple rooms, add each space separately to maintain accurate calculations and get a comprehensive material list for your entire project.

Features

Floor and Wall Modes

Switch between Floor and Wall tiling modes to match your project type. Each mode is optimized for its specific calculation requirements.

Floor Mode

Horizontal Surfaces

Rectangle areas
L-shaped rooms
Triangular spaces
Direct area input

Wall Mode

Vertical Surfaces

Room-based calculation
Automatic perimeter
Four-wall coverage
Height consideration

Multiple Area Shapes

For floor tiling, choose from three area shapes to match your room layout:

Rectangle

Enter width and height for standard rectangular areas. Perfect for most rooms and straightforward layouts.

L-Shape

Enter the total dimensions and the cutout dimensions for L-shaped rooms. Ideal for open-plan spaces with alcoves.

Triangle

Enter the base and height for triangular areas. Useful for angled walls or unique architectural features.

Deductions for Doors and Windows

Subtract areas that do not need tiling to avoid purchasing unnecessary materials. The calculator provides quick presets and custom options for maximum flexibility.

Door Preset

Standard door dimensions of 90 × 210 cm for quick deduction.

One-click addition
Multiple doors supported
Automatic area calculation

Window Preset

Standard window dimensions of 120 × 120 cm for instant deduction.

Quick preset button
Custom size option
Visual preview

Custom deductions: Not using standard sizes? Enter custom dimensions for any opening to ensure accurate material calculations for your specific project.

Three Laying Patterns

Choose how your tiles will be laid to achieve different aesthetic effects. Each pattern has different waste implications:

Straight

Standard grid layout with tiles aligned in rows and columns. Minimal waste, easiest installation.

0% extra waste

Brick / Offset

Staggered rows like a brick wall, creating a dynamic visual effect. Moderate waste from end cuts.

~5% extra waste

Diagonal 45°

Tiles rotated 45 degrees for a distinctive look. Higher waste due to angled edge cuts.

~15% extra waste

Grout and Waste Settings

Fine-tune your calculation with adjustable parameters to match your specific project requirements and installation conditions.

Grout Width Configuration

Adjust grout width from 0 to 10 mm to match your installation specifications. A wider grout line means each tile effectively covers a larger area (tile + grout), which slightly reduces the total number of tiles needed.

2-3 mm: Standard for rectified tiles with precise edges
4-5 mm: Common for most ceramic and porcelain tiles
6-10 mm: Rustic or handmade tiles with irregular edges

Waste Allowance Presets

Select the appropriate waste percentage based on your project complexity. Waste accounts for cuts, breakage, and future repairs.

5%: Simple rectangular rooms with straight laying patterns
10%: Standard projects with moderate complexity
15%: Complex cuts, diagonal patterns, or large-format tiles
0%: Not recommended — always plan for some waste

Canvas Tile Preview

See a visual representation of your tile layout before making any purchases. The preview adapts to your selected mode and pattern, providing an accurate representation of the final result.

Floor Preview

Flat grid view showing tile layout from above.

Pattern visualization
Shape representation
Deduction overlay

Wall Preview

Elevation view with ceiling and floor indicators.

Height visualization
Door/window placement
Perimeter coverage

Cost Estimation and PDF Export

Enter the price per tile and grout cost per square meter to get an instant cost breakdown. The calculator provides comprehensive budget planning tools for your entire project.

Cost Breakdown

Total tile cost calculation
Grout material expenses
Per-box pricing
Complete project budget

PDF Report Export

Complete measurements
Tile configuration details
Area calculations
Cost estimates

Professional documentation: Export a complete project report as a PDF file to share with contractors, get supplier quotes, or keep for your records.

Data Persistence

Your settings and measurements are automatically saved in your browser using local storage technology. Come back later and pick up right where you left off — all values are restored, including areas, deductions, tile configuration, and cost inputs.

Privacy guaranteed: All calculations happen entirely in your browser. Your measurements and project data are saved locally on your device and are never sent to any server.

Frequently Asked Questions

How much tile waste should I plan for?

A standard waste allowance is 10% for most projects. This accounts for cuts, breakage during installation, and keeping spare tiles for future repairs.

5% waste: Simple rectangular rooms with straight laying patterns and experienced installers
10% waste: Standard recommendation for most residential projects
15% or more: Diagonal patterns, complex room shapes, large-format tiles, or inexperienced installers

Important: Always round up to the nearest full box when purchasing. It's better to have extra tiles than to run short and risk not finding matching tiles from the same batch later.

What is the difference between Floor and Wall mode?

Floor mode lets you define area shapes (rectangle, L-shape, triangle) and calculates the flat surface area. You directly input the dimensions of the floor space you want to tile.

Wall mode uses room dimensions (length, width, ceiling height) and automatically calculates the total wall area for all four walls using the formula: 2 × (Length + Width) × Height.

Floor Mode

Direct Area Input

Choose shape type
Enter area dimensions
Calculate flat surface

Wall Mode

Room-Based Calculation

Enter room dimensions
Automatic perimeter
Four-wall coverage

How are door and window deductions calculated?

Deductions subtract the area of openings from the total tiling area. The calculator provides quick presets and custom options:

Door preset: Standard dimensions of 90 × 210 cm (1.89 m²)
Window preset: Standard dimensions of 120 × 120 cm (1.44 m²)
Custom dimensions: Enter any width and height for non-standard openings

The deducted area is subtracted from the total before calculating the number of tiles needed. You can add multiple deductions per area to account for all doors, windows, and other openings.

Pro tip: For wall tiling, always deduct door and window areas to avoid purchasing unnecessary materials. For floor tiling, only deduct permanent fixtures that won't be tiled over.

Why does the Brick pattern add extra tiles?

The brick (offset) pattern staggers each row by half a tile width, creating a visually appealing staggered effect similar to a brick wall. This means tiles at the ends of each row need to be cut, resulting in more waste.

Brick/Offset Pattern

Adds approximately 5% extra tiles to account for end cuts in each staggered row.

Diagonal Pattern

Adds approximately 15% extra tiles because every edge tile needs to be cut at an angle.

The calculator automatically adjusts the waste percentage based on your selected pattern to ensure you have enough tiles to complete the installation.

What does grout width affect?

Grout width is the gap between tiles filled with grout material. A wider grout line means each tile effectively covers a larger area (tile + grout), which slightly reduces the total number of tiles needed.

Grout Width	Tile Type	Visual Effect
2-3 mm	Rectified tiles	Seamless, modern look
4-5 mm	Standard ceramic/porcelain	Balanced appearance
6-10 mm	Rustic/handmade tiles	Traditional, textured look

Common grout widths range from 2–5 mm for most residential installations. The calculator factors this into the coverage area calculation to provide accurate tile quantities.

How is tiles per box calculated?

The calculator automatically estimates tiles per box based on the tile size, approximating one square meter per box. This is calculated using the formula:

Calculation Formula

Tiles per box = 10,000 cm² ÷ (tile width × tile height)

Example: For 30×30 cm tiles:

Tile area = 30 × 30 = 900 cm²
Tiles per box = 10,000 ÷ 900 ≈ 11 tiles

Important: You can manually adjust this number to match the actual packaging from your tile supplier, as box quantities vary by manufacturer and tile type.

Is my data stored or shared?

No. All calculations happen entirely in your browser using client-side JavaScript. Your measurements and project data are saved locally on your device using browser local storage and are never sent to any server.

100% Private

No data transmission to external servers.

Local Storage

All data saved in your browser only.

Secure

Your project information stays on your device.

You can clear your saved data at any time by clearing your browser's local storage or using the calculator's reset function.