Terms of Service
Last updated:
Accuracy — read this before you rely on a result
This tool gives an estimate. Accuracy depends on your screen, your browser zoom level, and how carefully you align things. It is good enough for most everyday purposes.
For anything expensive or difficult to return, confirm the result with a professional before you buy. We accept no liability for a purchase made on the basis of a measurement taken here.
Use of the site
Free to use, for personal and commercial purposes. No account needed.
Do not attempt to disrupt the site or use it in a way that harms other people.
No warranty
Provided as-is, with no warranty of any kind. We do not guarantee it will always be available or always correct — though if you find an error we genuinely want to hear about it.
External links
We are not responsible for the content of sites we link to.
Changes
These terms may change. The date above shows the last revision.