OnTheGrid

OnTheGrid Tiles

Free Tile Calculator for Complex Surfaces

How to Use

1

Draw Your Surface

Click to place vertices and create your surface shape.

2

Add Exclusions (Optional)

Press E to add exclusion zones for doors, windows, or other obstacles that don't need tiles.

3

Configure Tile Settings

Enter your tile dimensions, choose a laying pattern (stacked, running bond, third-offset, diagonal, or herringbone), and set grout width for accurate calculations.

4

Get Instant Results

View real-time calculations including net area, whole tiles, and partial tiles. Results update automatically as you draw.

Key Features

Complex Surfaces

Draw any surface shape with right angles. Perfect for L-shaped rooms, corridors, and irregular spaces.

Exclusion Zones

Mark doors, windows, or obstacles. Get accurate calculations that account for areas you don't need to tile.

Multiple Patterns

Support for stacked, running bond, diagonal, herringbone, and third-offset patterns with grout spacing.

Instant Results

Real-time calculations showing net area, whole tiles, and partial tiles with precise quantities.

Export to PDF

Download professional PDF reports with your surface layout, calculations, and tile estimates for reference or sharing.

100% Free & Private

No sign-up required. All calculations happen in your browser. Your data never leaves your device.

Frequently Asked Questions

How accurate is the tile calculator?

Our calculator uses precise geometric algorithms to calculate tile quantities. It accounts for your exact room shape, exclusion zones, tile pattern, and grout spacing. The accuracy depends on how precisely you draw your room shape.

Can I use this for diagonal or herringbone patterns?

Yes! We support 5 tile patterns: stacked (grid), running bond (brick), third-offset, diagonal (45°), and herringbone. Each pattern is calculated with proper tile placement accounting for cuts and partial tiles.

What are exclusion zones and when should I use them?

Exclusion zones are areas where you don't need tiles, like doorways, kitchen islands, bathtubs, or built-in furniture. Press 'E' to enable exclusion drawing mode, then draw the areas to exclude for accurate tile quantities.

Does the calculator work for walls and floors?

Yes! The calculator works for any flat surface - floors, walls, backsplashes, or patios. Just draw the shape and configure your tile dimensions.

Can I export or save my calculations?

Yes! You can export a professional PDF report with your room layout, tile configuration, and quantity calculations for your records or to share with contractors.

Is my data private and secure?

Absolutely! All calculations happen locally in your browser. We don't collect, store, or transmit any of your data to servers. Your room layouts and measurements stay completely private on your device.