Privacy Policy

This policy explains what information 100+ Calculators collects and how it's used. The short version: the calculators run in your browser, and what you type into them never leaves your device.

Calculator entries stay in your browser

All 101 calculators run entirely in your browser. The numbers and text you enter are processed on your own device — they are not saved on our servers, not transmitted to us, and not shared with third parties. Refresh the page and they're gone. We can't see what you calculated, and neither can anyone else.

Technical data and hosting

This site is hosted on a third-party hosting platform. Like virtually every website, the hosting provider automatically records standard technical information — such as IP address, browser type, pages requested, and timestamps — in server logs. This data is used to operate, secure, and troubleshoot the site.

Accounts

You don't need an account to use any calculator. If you choose to sign in, the platform stores the email address and name associated with your account to manage your session.

Cookies and local storage

The calculators themselves use no cookies. The site does not use advertising or tracking cookies. The hosting platform may use essential browser storage (such as a session token) if you sign in.

Analytics

We do not track which calculators you use or what you type into them. Our hosting platform may collect aggregate, anonymous usage statistics — like overall page views — to operate and improve the site.

Advertising

This site currently does not display advertising. If we add advertising in the future (for example, through Google AdSense), third-party vendors — including Google — may use cookies to serve ads based on your prior visits to this or other websites, and this policy will be updated with details about those partners and the choices available to you.

External links

Where the site links to external websites, those sites have their own privacy practices. We're not responsible for their content or how they handle data.

Children's privacy

The site isn't directed at children under 13, and we don't knowingly collect personal information from children.

Changes to this policy

If our data practices change, we'll update this page and revise the "last updated" date at the top.

Questions

If something in this policy is unclear, reach out via the contact page.