Floor Covering Calculator — How Many Boxes of Flooring Do I Need?
A free printable floor covering calculator. Add as many rooms as your job needs, choose each room's shape — rectangle, L-shape or round — and enter the dimensions, then pick your flooring (laminate, vinyl plank, engineered timber, solid hardwood, tiles or carpet tiles) and a waste allowance. The sheet works out the floor area and the number of boxes to buy for each room and the whole job, with a labelled floor plan of every room. Print it or save it as a PDF.
Flooring is bought by the box, and every box covers a fixed number of square metres — so the real question when you're ordering laminate, vinyl planks, engineered boards, tiles or carpet tiles is never “how many square metres” but “how many boxes”. This calculator answers exactly that. You build the job up room by room: for each room you pick a shape and type in the measurements, and it works out the floor area. Rectangular rooms need just a length and width; an L-shaped room is entered as an overall rectangle with a corner notch taken out; and a round area uses a single diameter.
Once the total floor area is known, two more things decide the box count. The first is a waste allowance — you never lay a floor with zero offcuts, because planks and tiles have to be cut to fit at the walls, and any pattern, wood grain or diagonal and herringbone layout wastes more. Around 10% extra is a common rule of thumb, rising to 15% for diagonal or chevron installations. The second is the coverage of one box, printed on the product's label. Choose a flooring type for a typical figure, or enter your product's exact coverage, and the sheet adds the waste to the area, divides by the per-box coverage and rounds up to whole boxes — because you can't buy a fraction of a box.
Every room is drawn on the printable sheet as a simple labelled floor plan with its dimensions marked and its area listed, and a totals panel at the top adds the whole job together: total floor area, area including waste, boxes to buy, and how much covering that actually gives you so you can see your spare. There's a notes area for the product name, colour, batch number and underlay. Take the finished page to the flooring shop and you'll order exactly what you need in one trip.
Printing at exact scale
Every sheet is drawn in real millimetres and prints at exact physical scale. For accurate output, set Scale = 100% (Actual size) and Margins = None in your browser's print dialog. Not sure your printer is honest? Run the printer ruler test first to confirm 50 mm really measures 50 mm. Prefer a file? Use the PDF, PNG or SVG buttons to download the sheet instead of printing — PDF and SVG keep the exact dimensions, and PNG is a 300 DPI image.
Frequently asked questions
How many boxes of flooring do I need?
Enter each room's shape and dimensions and the calculator adds up the total floor area, adds your waste allowance, then divides by the coverage of one box (printed on the product) and rounds up to whole boxes. It shows the box count for the whole job plus the area each room needs.
How do I measure an L-shaped or irregular room?
Choose the L-shape option and enter the overall length and width, then the size of the rectangular corner notch to remove. For more complex layouts, split the room into separate rectangles and add each as its own room — the sheet totals them all together.
How much waste should I allow?
About 10% extra is a common allowance for straight-lay planks and tiles, covering the cuts at walls and around fixtures. Allow around 15% for diagonal, herringbone or chevron layouts, or for large-format tiles and strongly patterned or grained products where matching wastes more.
What does coverage per box mean?
It's the number of square metres one box or pack of the flooring covers, and it's printed on the label. It varies by product and plank size, so for an accurate order use your product's actual figure rather than the preset — the presets are only typical values.
Which floor coverings does it handle?
Any covering sold by the box or pack: laminate, engineered timber, solid hardwood, luxury vinyl plank (LVP/SPC), vinyl tile (LVT), ceramic and porcelain tiles, and carpet tiles. Pick the closest preset for a typical coverage, or enter your own.
Can I calculate several rooms at once?
Yes — add a room for each space, mix rectangle, L-shape and round shapes freely, and set a quantity if several rooms are identical. The sheet lists them all with individual floor plans and areas, then totals the whole job into a single boxes figure.
Should I buy an extra box?
It's wise. Keeping one spare box lets you replace a damaged plank or tile years later without a colour or batch mismatch, since dye lots change between production runs. The sheet shows how much spare covering your rounded-up order already gives you.
Is the estimate exact?
It's a close estimate of the material you need. Actual usage depends on the room's exact shape, the plank or tile size, the layout direction and the installer's cutting. Keep the waste allowance on, note the batch number, and it's far better to have a spare box than to run short mid-floor.
Is it really free?
Yes. Every template on printsheet.io is completely free, with no sign-up, no account and no watermark. Generate as many sheets as you like.
How do I get an exact-scale print?
Choose your paper size, then in the print dialog set Scale to 100% or “Actual size” and Margins to None. The sheet is defined in real millimetres, so it prints at true size. Use the calibration ruler page to verify.
Which paper sizes are supported?
A4, A5, A3, A6, US Letter, Legal and Tabloid, in portrait or landscape. Pick the size that matches the paper loaded in your printer.
Can I save it as a PDF instead of printing?
Yes — choose “Save as PDF” as the printer in your browser's print dialog. The PDF keeps the exact millimetre dimensions.
Can I download it as an image (PNG or SVG)?
Yes — as well as Print and PDF, every sheet has a PNG and an SVG download button. PNG gives you a high-resolution (300 DPI) image at the exact page size, ideal for pasting into a document or sharing. SVG is a scalable vector file that stays razor-sharp at any size and can be edited in tools like Inkscape or Illustrator. Both are generated in your browser from the sheet you see on screen.