Flooring Calculator
Work out how much flooring you need for a room, including wastage.
Flooring for the room
Flooring is bought by area, so covering a room comes down to its floor area plus an allowance for cutting and fitting. This works out how much you need from the room's dimensions and adds wastage, so you buy enough boxes to finish without coming up short.
Enter the room dimensions to see the flooring required.
Wastage, direction and batches
Several factors mean you buy more than the bare area. Boards and planks have to be cut at the edges, producing offcuts, and the wastage is higher for a diagonal layout or a room with lots of angles — a common allowance is around ten percent, more for complex rooms. Buying from the same batch matters for consistency, since patterns and shades vary between runs, and keeping a spare box after the job makes a future repair match.
Questions & answers
How much extra flooring should I buy?
Around ten percent over the room area for cuts, more for diagonal layouts or rooms with lots of angles and alcoves.
Why buy from one batch and keep spares?
Shades and patterns vary between production runs, so same-batch consistency matters, and spare boards make future repairs match.
Is anything uploaded?
No. The calculation happens in your browser.