About FabricMeasure
FabricMeasure is an independent site publishing fabric and sewing calculators that show their working. It is built and maintained by one person, funded by advertising, and takes no payment from fabric retailers or manufacturers.
Why it exists
FabricMeasure exists because every fabric calculator I found gave a number and no reasoning. When two of them disagreed there was no way to tell which had assumed a 15 cm heading and which had assumed 25 cm — so I built one where every allowance is visible, editable, and shown in the arithmetic.
The result is a small set of tools built around one idea: a number you cannot check is not much use. Every calculator shows the arithmetic that produced its answer, exposes every allowance it used, and states the assumptions a professional might argue with rather than burying them.
How the figures are checked
- The prose is generated, not written. The worked examples and reference tables in the supporting text are rendered from the same functions the calculators run, so the explanation cannot contradict the tool.
- The maths is unit-tested, including the awkward cases: a drop exactly on a pattern repeat boundary, a measurement entered in inches whose conversion lands a nanometre past that boundary, fabric too narrow to work at all. The tests run as part of every build, so a failing calculation cannot ship.
- Results are cross-checked against published trade calculators, and where this site deliberately differs, the reason is recorded and explained on the methodology page.
- Each tool carries a method version. When the maths changes the version bumps, so a figure you saved last month can be told apart from today's.
Independence
The site is funded by advertising. Ads are clearly labelled, never placed above or inside a calculator, and no advertiser has any say in what the calculators say. There are no sponsored recommendations and no affiliate links at present; if that changes it will be disclosed on this page and on the privacy page before it appears anywhere else.
Who wrote it
Wickeey, web developer. Corrections, disagreements and reports of a wrong result are all genuinely welcome — get in touch, or use the "Report a wrong result" link on any calculator, which pre-fills the exact inputs that produced it.