Flooring Calculator
Estimate how much flooring material to order, with a waste allowance based on material and layout.
Field tool
Measure lengths, areas and counts straight off a PDF sheet or a scanned drawing. Set the scale from a dimension you already know, keep the measurements in named layers, and send any total to a calculator.

The drawing is opened inside this page and never uploaded. This site ships a policy that forbids the browser from making any outbound request at all, so there is nowhere for it to go.
Click the two ends of something on the drawing whose real size you know — a figured dimension, a door, a scale bar — then type what it should be. That is more reliable than the printed scale, which is only right if the sheet was printed and scanned at exactly full size.
Internal walls and external walls are both lengths and are bought as different things, so a single running total of every line on the sheet would be worth nothing. Each layer adds up on its own.
No layers yet. Add one to start measuring.
A drawing is a true projection, so the scale set here is exact for the sheet in front of you. It is only as good as the sheet, though: check the revision, and remember a scan can stretch. Everything rests on the one dimension you typed — if that is wrong, every measurement is wrong by the same factor and nothing on the page will look unusual. Set the scale, then measure a second dimension you also know, and see whether it comes back right. The file is opened inside this page and is never uploaded.
Choose a PDF or an image. It is rendered inside this page; nothing is uploaded, and the site ships a policy that forbids the browser from making any outbound request at all.
In Set scale mode, click the two ends of something whose real size you know — a figured dimension, a door, a scale bar — and type what it should be. This beats the printed scale, which is only right if the sheet was printed and scanned at exactly full size.
Measure something else you also know and see whether it comes back right. A calibration error is invisible otherwise, because every number on the sheet is wrong by the same factor.
Internal walls and external walls are both lengths and are bought as different things, so each layer adds up on its own. Layers come in three kinds: length, area and count.
Click along a run, around a room, or on each fitting you are tallying. Near-straight segments square up automatically, and clicking near a corner you have already placed snaps onto it so a traced room really closes.
Keep a layer total and every calculator input that measures the same thing will offer it, converted into that box's own units. Counts are kept too, though no calculator input takes a plain tally.
Everything rests on the one dimension you type to set the scale — get that wrong and every measurement is wrong by the same factor, consistently and invisibly. A drawing can also be superseded, and a scanned sheet can stretch on the glass.
A reading on its own does not order material. These calculators take what you just measured and give you quantities, cuts or cost.
Estimate how much flooring material to order, with a waste allowance based on material and layout.
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Estimate how many wall studs you need for a wall run, at standard 16 or 24 in (400 or 600 mm) on-center spacing.