Flooring Material Calculator
Turn a floor area into the amount of flooring to buy — add a waste allowance for cuts and pattern matching, and round up to whole boxes.
Flooring to order
10% waste suits a straight lay in a simple room; allow 15–20% for diagonal or herringbone patterns, busy rooms with many cuts, or long plank runs. Keep a spare box for future repairs.
Order once, order right
Two things trip people up when buying flooring: forgetting the waste, so a job stalls one board short, and over-ordering by eye and leaving boxes to gather dust. A waste percentage plus whole-box rounding fixes both. You get a realistic quantity that covers offcuts, the odd damaged plank, and pattern matching, without a wildly wasteful surplus.
The right waste factor depends on the room and the lay. Long straight runs in an open rectangle waste little; a small room full of doorways, or a diagonal pattern, wastes far more. When unsure, round the waste up rather than down — a spare board is cheap next to a second delivery.
Frequently Asked Questions
How much extra flooring should I buy for waste?
A 10% allowance is the usual starting point for a straight lay in a simple, squarish room. Step up to 15% for a busier room with lots of cuts and doorways, and to 20% or more for diagonal or herringbone patterns, which waste more at every angled cut. The tool defaults to 10% and lets you change it.
Why does the calculator round up to whole boxes?
Flooring is sold by the box or pack, not the loose square metre, so the real question is how many boxes to buy. Enter the coverage printed on the box and the tool divides your with-waste area by it and rounds up, because a part-box still means buying the whole box.
Where do I get the floor area to enter?
Measure the room wall-to-wall and multiply length by width, or use the room area & square footage calculator and bring the figure across. For an L-shaped or irregular room, add up the rectangles first, then enter the total here.
Should I keep any leftover flooring?
Yes — hold back at least one spare plank or tile, ideally a sealed part-box. Batches vary slightly in shade, and matching a repair years later from the same batch is far easier than hunting for a discontinued line. The tool shows the leftover so you know what you'll have spare.
Does this work for tiles, laminate, and vinyl?
Yes. The area-plus-waste method is the same for laminate, engineered wood, vinyl planks, and tiles — only the typical waste factor and box coverage change. For tiles, remember grout gaps are part of the coverage, and buy a little extra for future breakages.
A general estimate from the area, waste, and box coverage you enter. Confirm the exact box coverage and recommended waste with the manufacturer or your fitter before ordering.