How do I calculate flooring for a room?

Measure the room's length and width in metres and multiply them together to get the floor area in square metres (m²). Add a wastage allowance — typically 10% for straight-lay flooring, 15% for herringbone or chevron patterns — to get your total area. Then divide by the pack coverage (shown on the packaging) and round up to the nearest whole pack. Our calculators do all of this automatically once you enter your room dimensions and select your flooring type.

What wastage should I add for flooring?

The standard wastage allowance for straight-lay flooring (laminate, LVT, engineered wood) is 10%. For irregular-shaped rooms or rooms with alcoves, add 12-15%. For herringbone or chevron patterns, add 15-20% as these patterns waste significantly more material at the room edges. Carpet typically needs 10-15% wastage to account for cutting and seams. Our calculators apply appropriate wastage automatically, and you can adjust the percentage manually.

Are the prices shown on FlooringCalculator.co.uk accurate?

Our prices are based on UK retail prices monitored from B&Q, Wickes, Carpetright, Tapi Carpets, Flooring Superstore, and United Carpets, updated at least quarterly. They are indicative figures to help you budget — actual prices vary between retailers, change over time, and differ between product lines. Always check current prices at your chosen retailer before purchasing. Labour cost estimates are based on Checkatrade and MyBuilder data and represent national UK averages.

About FlooringCalculator.co.uk

Updated February 2026

Our Mission

FlooringCalculator.co.uk provides free, accurate online calculators for every type of flooring commonly installed in UK homes. Our tools help homeowners, DIY fitters, and professional flooring contractors work out exactly how much material to buy — down to the number of packs or metres of carpet — along with realistic cost estimates based on current UK market prices.

Flooring is one of the most significant investments in any home, and getting the quantity right matters in two directions. Buy too much, and you have spent money on packs of laminate or rolls of vinyl that sit unused. Buy too little, and you face the frustrating problem of needing to source additional stock that may no longer match your original batch. Our calculators eliminate both risks by giving you precise, pack-level results the moment you enter your room dimensions.

What Calculators We Provide

FlooringCalculator.co.uk offers free calculators for the full range of flooring types available in the UK market:

Laminate Flooring Calculator

Our laminate calculator works out the exact number of packs needed for any room. Enter your room length, width, plank length, plank width, and planks per pack, and the calculator returns total area, area including wastage, pack coverage, packs needed, total planks, spare planks, and estimated cost. Covers all common UK laminate plank sizes including 1,285 × 192mm, 1,380 × 193mm, and 1,200 × 190mm formats. Wastage defaults to 10% for standard lay, which you can adjust for angled patterns or irregular rooms.

Vinyl and LVT Flooring Calculator

Our vinyl and LVT calculator handles both sheet vinyl (sold by linear metre from a standard 4m wide roll) and luxury vinyl tiles (LVT, sold in packs). For LVT, the calculator works identically to the laminate tool. For sheet vinyl, it calculates how many linear metres of the roll you need, accounting for the room width and a minimum 100mm join or cutting allowance. Covers all common UK LVT formats from standard 304 × 609mm tiles to large-format 450 × 914mm planks.

Carpet Calculator

Our carpet calculator estimates how many square metres of carpet you need for a room or a whole house, including an appropriate wastage allowance for seaming and directional pile matching. Results are shown in square metres (the standard unit used by all UK carpet retailers), total rolls (based on standard 4m and 5m roll widths), and estimated cost at your chosen price per square metre.

Hardwood and Engineered Wood Calculator

Our hardwood and engineered wood calculator covers solid hardwood boards (typically sold by the square metre) and engineered wood (sold in packs). Wastage defaults are higher than for laminate — typically 12–15% — because hardwood often involves more precise alignment around architectural features. The calculator shows total area, wastage area, packs or square metres needed, and cost estimate.

Underlay Calculator

Our underlay calculator works out how many square metres of underlay you need for any flooring project. Underlay is sold in rolls of fixed width and length, so the calculator converts your floor area into whole rolls based on the roll dimensions you specify. Covers foam underlay (standard 3mm and 5mm), fibreboard underlay, and rubber crumb underlay options.

Flooring Cost Estimator

Our cost estimator combines material and labour costs into a single project budget. Enter your floor area, flooring type, quality tier, and postcode area, and the estimator returns a total project cost range covering materials, underlay, adhesive, and professional fitting. Labour rates are sourced from Checkatrade and MyBuilder data, with regional adjustments for London, the South East, and other UK regions.

Who Our Calculators Are For

Our tools are used across the full spectrum of people involved in flooring projects:

Homeowners planning a room renovation — The most common use case. Before visiting Carpetright, Tapi, B&Q, or an independent tile shop, knowing exactly how many packs or metres you need prevents both the embarrassment of underestimating and the waste of overbuying.
DIY fitters — If you are fitting your own flooring, accurate pack quantities are essential. Our calculators handle the pack-level rounding that manufacturers’ basic area calculators often miss, ensuring you account for whole packs rather than fractions.
Professional flooring contractors — A quick independent check against your own site measurements, or a client-facing tool to show the basis for the quantities in your quote.
Property developers and buy-to-let landlords — Estimating flooring costs across multiple properties or refurbishment projects, where accurate material quantities feed into project budget models and ROI calculations.
Interior designers and architects — Providing clients with realistic material quantities to accompany flooring specifications and material schedules.

Our Data Sources and Pricing

Pricing estimates on FlooringCalculator.co.uk are based on UK retail prices monitored from major retailers including B&Q, Wickes, Carpetright, Tapi Carpets, Flooring Superstore, and United Carpets. We also reference manufacturer direct prices from Quick-Step, Egger, Amtico, and Karndean for LVT. Prices are reviewed and updated at least quarterly, and each page shows the date it was last reviewed.

Product specifications (plank sizes, pack coverage figures, roll widths) are sourced from manufacturer technical documentation and verified against current retailer listings. Fitting cost estimates are based on data from Checkatrade, MyBuilder, and the National Institute of Carpet and Floorlayers (NICF), with regional multipliers applied for London, the South East, and other UK regions.

Accuracy and Limitations

Our calculators provide estimates designed for planning and budgeting. They assume rectangular rooms with straight-lay flooring and standard product sizes. For rooms with alcoves, bay windows, irregular shapes, or fitted furniture, we recommend splitting the area into rectangular sections and calculating each section separately, then adding the results. Prices are indicative and change over time — always check current retailer prices before purchasing. Labour costs are national averages and may differ significantly in your area.

About the Company

FlooringCalculator.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 homeowners, tradespeople, and consumers. The site is fully independent — we have no commercial relationship with any flooring manufacturer or retailer. When we reference brands such as B&Q, Carpetright, or Quick-Step, it is for the reader’s reference only.

The site is funded by display advertising through Google AdSense, which allows all calculators to remain permanently free to use. All calculations happen in your browser using JavaScript — no measurements or personal data are sent to any server. Please see our privacy policy for details.

We welcome feedback, corrections, and suggestions for new features. If you spot an error in our calculations or have a question about flooring, please get in touch.

Frequently Asked Questions

Measure length × width in metres to get m². Add a wastage allowance (10% for straight-lay, 15-20% for herringbone or chevron). Divide by pack coverage and round up to whole packs. Our calculators do this automatically.

10% for straight-lay laminate, LVT, or engineered wood. 12-15% for irregular rooms. 15-20% for herringbone or chevron patterns. 10-15% for carpet. Our calculators apply appropriate defaults automatically.

Prices are indicative figures based on UK retail monitoring (B&Q, Wickes, Carpetright, etc.), updated quarterly. Always verify current prices at your chosen retailer before purchasing.

FlooringCalculator.co.uk is operated by Fine Content Limited, Company No. 16603901, registered in England and Wales. The site is supported by Google AdSense advertising and is independent of any flooring manufacturer or retailer.

Last updated: February 2026. Operated by Fine Content Limited, Company No. 16603901, registered in England and Wales.