About TileCalculator.co.uk

Our Mission

TileCalculator.co.uk provides free, accurate tile quantity calculators designed specifically for UK homeowners, DIY enthusiasts, and professional tilers. Our mission is simple: help you work out exactly how many tiles you need before you visit the tile shop, so you order the right quantity first time and avoid the two most common and costly tiling mistakes — over-ordering and under-ordering.

Over-ordering tiles wastes money on boxes you will never open, which then sit in your garage or go to the tip. Under-ordering is often worse: if you run out of tiles mid-project, you may find the batch you originally bought is no longer in stock, and even if it is, tiles from a different batch often have slight colour and shade variations that are visible once laid. Getting the quantity right from the start is not just about saving money — it protects the quality of the finished result.

What Calculators We Offer

TileCalculator.co.uk covers every common tiling scenario a UK homeowner or tiler is likely to encounter:

• Floor Tile Calculator — Works out tile quantities for rectangular and L-shaped floors. Select your tile size from common UK sizes (300mm, 450mm, 600mm, 900mm, and more), choose your laying pattern (straight grid, brick bond, diagonal, herringbone), and set your grout gap. The calculator adjusts wastage automatically based on pattern complexity.
• Wall Tile Calculator — Calculates tiles for a single wall or a full room, with deductions for windows, doors, and other openings. Ideal for kitchen splashbacks, utility rooms, and feature walls.
• Bathroom Tile Calculator — A combined calculator for complete bathroom tiling, covering floor and all four walls in a single calculation. Allows separate tile sizes and patterns for floor and walls, and includes deductions for the bath panel, shower area, windows, and door.
• Kitchen Tile Calculator — Optimised for kitchen splashback areas between worktop and overhead units, with standard deductions for hob and extractor footprints.
• Grout and Adhesive Estimator — Alongside tile quantities, our calculators estimate the grout and adhesive you will need, based on UK manufacturer coverage rates for products from BAL, Mapei, and Weber.
• Cost Estimator — Enter a price per square metre or per tile to get a total material cost estimate, including an adhesive and grout allowance.

How Our Calculations Work

Every calculator on TileCalculator.co.uk uses the same industry-standard methodology, adapted for each specific scenario:

Step 1: Area Calculation

We calculate the area to be tiled in square metres. For floors, this is length × width. For walls, it is width × height, minus deductions for windows and doors. All measurements are in metric — the system used by all UK tile retailers and manufacturers — and you can enter measurements in either metres or centimetres.

Step 2: Tile Coverage per Tile

Each tile covers an area equal to its face dimensions plus half the grout gap on each side. For a 300 × 300mm tile with a 3mm grout gap, the effective coverage per tile is 303 × 303mm = 0.0918m². We divide the room area by this effective area and round up to the nearest whole tile, because you cannot purchase or install a fraction of a tile.

Step 3: Wastage Allowance

We add a wastage percentage based on Tile Association (TTA) guidelines and professional tiler practice. Our defaults are: 10% for straight-lay, 13% for brick bond, 15% for diagonal, and 18% for herringbone. These figures account for cuts at room edges, breakages during cutting, and the additional inefficiency that angled patterns create. You can adjust the wastage percentage manually if your project has specific requirements.

Who Our Calculators Are For

Our tools are used by a wide range of people at different stages of a tiling project:

• Homeowners planning a project — Getting a quantity estimate before visiting Topps Tiles, Wickes, or B&Q allows you to budget accurately and avoid the embarrassment of returning to buy more tiles from a potentially unavailable batch.
• DIY tilers — Whether it is your first bathroom retile or your fifth, our calculators give you a confident starting point for ordering, with pattern-specific wastage built in.
• Professional tilers — A quick sense-check against your own estimate, or a tool to share with clients so they understand the quantities involved before you write a quote.
• Builders and developers — Estimating tile quantities across multiple rooms or properties as part of a development budget.
• Interior designers — Providing clients with realistic material quantities to accompany tile specifications and mood boards.

Our UK Focus

Everything on TileCalculator.co.uk is built around the UK market. Our tile size presets reflect the sizes commonly stocked by UK retailers. Our cost estimates use UK retail pricing in pounds sterling, updated quarterly from retailers including Topps Tiles, Wickes, B&Q, Tile Giant, and the Porcelain Superstore. Our standard references align with UK building standards, including BS 5385 (Wall and Floor Tiling) and Building Regulations Approved Document C. All content is written in British English with UK-specific terminology throughout.

Accuracy and Limitations

Our calculators provide estimates for planning purposes and are designed to give you a reliable starting point for material ordering. They assume flat, regular surfaces with consistent grout gaps throughout. Please note that actual material requirements may vary for rooms with sloped ceilings, very uneven substrates, or complex shapes not covered by our rectangle and L-shape modes. Labour costs, if shown, are national UK averages and may vary significantly by region, particularly in London and the South East. We are not responsible for any losses arising from the use of our calculators, and we recommend confirming quantities with your tile supplier before placing a large order.

About the Company

TileCalculator.co.uk is operated by Fine Content Limited, Company No. 16603901, registered in England and Wales. Fine Content Limited builds free online calculator and reference tools for UK audiences across a range of home improvement and consumer topics. The site is supported by display advertising through Google AdSense, which allows all calculators to remain permanently free to use.

If you have found an error in our calculations, have a suggestion for a new feature, or simply want to share feedback, please visit our contact page. We take accuracy seriously and investigate all reported errors promptly.

Frequently Asked Questions