Vinyl Flooring Calculator — Sheet Vinyl, LVT Tiles & Planks

To calculate the floor size for vinyl flooring, measure the room length and width in metres at floor level (not at skirting height, as walls are rarely perfectly square) and multiply them: floor area (m²) = length × width. For example, a 5.0m × 4.0m room is 20 m². Measure to the widest points and take readings at two or three places along each wall, using the largest figure. Then add a wastage allowance — about 10% for a standard rectangular room — so you order enough for cuts and trimming. Enter your length and width above and the calculator does this for you, then converts the area into the sheet vinyl roll length or number of LVT packs to buy.

Split the floor into simple rectangles and enter each one as its own section using the Add section button; the calculator adds the areas together for you. For sheet vinyl, each section is treated as its own cut off the roll: the roll length for every section is worked out against the roll width, rounded up, then summed, so the total never comes up short. There will be a join where sections meet, so consider a higher wastage allowance for pattern matching across the join. For LVT packs, the pack count is rounded up per section, which covers the extra cuts at the junction. For a fixed kitchen island or chimney breast that the flooring will not cover, you can trim a section's dimensions to suit.

First pick a roll width — UK sheet vinyl comes in 2m, 3m and 4m widths — that is at least as wide as your room’s narrowest dimension, so the floor is covered in one piece with no seam. Then the length to buy = room length × (1 + wastage %), rounded up (this calculator rounds to the nearest 0.1m by default). For example, a 4.0m × 3.0m room laid from a 3m-wide roll needs about 4.0m of length plus ~10% = roughly 4.4m. If both room dimensions are wider than the roll, a seam is unavoidable; the calculator then tests both ways of running the strips and picks whichever buys the least vinyl. Compare with our Laminate Flooring Calculator.

To work out LVT packs, calculate the floor area (length × width in metres), add a wastage allowance of about 10% for straight laying (15-20% is wise for diagonal or herringbone patterns), then divide by the coverage per pack and round up to the next whole pack. So packs needed = (floor area × (1 + wastage %)) ÷ pack coverage in m², always rounded up because you cannot buy part of a pack. LVT pack coverage varies by brand and range, so check the figure on your product page and use the Custom pack option above to enter it exactly.

In the UK, sheet vinyl typically comes in 2m, 3m and 4m roll widths. 4m is the most common and suits most rooms without seams. Narrower rolls (2m, 3m) are available for smaller spaces like bathrooms and kitchens. If your room is wider than the roll, a seam will be needed — a professional fitter can heat-weld or cold-weld vinyl seams. For a comparison with other floor coverings, see our Laminate Flooring Calculator or Carpet Calculator.

LVT (Luxury Vinyl Tile) is a rigid or flexible vinyl flooring sold as individual tiles or planks that click together, similar to laminate. LVT is sold in packs that typically cover roughly 1.8-3.3 m² per pack depending on the brand and range (for example around 1.77 m² for Amtico Click Smart, 2.13 m² for Quick-Step Alpha and 3.34 m² for Karndean Knight Tile). It is waterproof, durable and popular in kitchens and bathrooms. UK brands include Karndean, Amtico, Quick-Step and Harvey Maria. This vinyl flooring quantity calculator handles both sheet vinyl and LVT packs — choose the Custom pack option to enter the exact coverage from your product page.

As a rule of thumb, allow around 10% wastage for standard rectangular rooms when ordering vinyl or LVT. For sheet vinyl in rooms wider than the roll width (requiring seams), many fitters increase this to about 15% to allow for pattern matching across the join. For LVT tiles and planks, roughly 10% is usually enough for straight laying, while complex room shapes or diagonal patterns can need around 15-20% extra. These are industry practice figures, not fixed standards — your installer or the product's own fitting guide may advise differently. You can adjust the wastage percentage in this calculator.

Sheet vinyl does not usually require separate underlay — it should be laid on a smooth, level subfloor. LVT click flooring may include built-in underlay or, as a general guide, take a thin (typically around 1–1.5mm) underlay designed for vinyl. Always follow the manufacturer’s installation guide for the specific product, as some warranties are void if an unapproved underlay is used. Do not use thick carpet underlay under vinyl. If the subfloor is uneven, use our Self-Levelling Compound Calculator to work out levelling quantities.

Yes, provided the existing tiles are firmly fixed, level and clean. As a practical guide, fill grout lines with a levelling compound if they are more than roughly 1–2mm deep — otherwise they can show through the vinyl over time (known as telegraphing), particularly with thinner sheet vinyl. Use our Floor Levelling Calculator to estimate compound quantities. After laying vinyl, finish with skirting boards — see our Skirting Board Calculator.