Privacy

Calculator inputs

Everything you enter into a calculator is processed in your browser. They aren't sent to a server or saved, and they're gone when you close or reload the page. Copy buttons write to your clipboard only when you click them.

Contact form

If you send a message through the contact form, Netlify, which hosts this site, stores what you submit: the topic, your message, and your email address if you include one. Netlify also records basic technical details with each submission, such as the time, your IP address, and your browser type, and checks submissions for spam.

Messages are read only by the site owner and used only to reply to you or improve the site. They aren't sold or shared for marketing. To have a message deleted, ask through the contact form.

No accounts, ads, or tracking scripts

The site has no accounts or advertising. It doesn't set its own cookies or load any tracking or third-party scripts.

Hosting and Cloudflare

Netlify hosts the site. Cloudflare sits in front of it to run the domain's DNS, cache pages, and block malicious traffic. Every page request passes through both, so like any web host they process standard request details, such as your IP address, browser type, and the pages you visit, and may keep them in logs.

Cloudflare also provides the site owner with aggregate traffic statistics, such as the number of visits, countries, and data transferred. These aren't used to build a profile of you. If Cloudflare suspects automated traffic, it may set a security cookie to tell people from bots. That cookie isn't used for tracking or advertising.

None of this includes anything you type into a calculator.

Theme preference

The only thing the site saves on your device is the color theme you pick. It's kept in your browser's local storage under the name property-math-theme, so the site remembers your choice next time. To remove it, clear this site's data in your browser settings.