Privacy policy

What this site collects, what it does not, who else is involved, and how to opt out.

Calculations stay on your device

Every calculator runs entirely in your browser. The dimensions, prices and quantities you type are never transmitted to us and are never stored on a server. The default unit system is chosen from your browser language setting, on your device.

What we collect

Right now, nothing beyond what any web server sees when it delivers a page. There is no analytics script on this site. If a privacy-respecting page counter is added later, this page will say so first.

  • Anything you choose to send through the contact form: your message and the email address you give us, used only to reply.

Advertising cookies

The site is supported by advertising. Third-party vendors, including Google, use cookies to serve ads based on your prior visits to this website or to other websites. Google uses advertising cookies to serve ads to you based on your visits to this site and other sites on the internet.

You can opt out of personalized advertising by visiting Google Ads Settings, or opt out of third-party vendor cookies for personalized advertising at aboutads.info. If you have not opted out of third-party ad serving, the cookies of other third-party vendors or ad networks may also be used to serve ads on this site, under their own privacy policies.

Where the law requires it, including the EEA, the UK and Switzerland, you are shown a consent choice before any advertising cookie is set, and you can change that choice at any time from the link in the footer.

Google Ads Settings ↗aboutads.info opt-out ↗How Google uses data from partner sites ↗

Hosting

The site is served by Cloudflare. Like any host, Cloudflare processes standard connection logs (IP address, browser type, requested page) to deliver the site and protect it from abuse, under its own privacy policy.

Cloudflare privacy policy ↗

Your choices

You can clear site data at any time from your browser settings without losing access to anything, because there is no account to lose. To ask what we hold about a contact-form message, or to have it deleted, use the contact page.