Privacy Policy
Last updated: 2026-10-21
Summary
The calculators run in your browser, and the numbers you enter are not sent to us. We do not ask you to create an account. When advertising is enabled, third-party vendors including Google may use cookies and similar technologies to show ads.
Information we process
- Calculator inputs. Processed locally in your browser. If you use “Copy shareable link”, your inputs are added to the page address (as query parameters) so the link can reproduce your result. Anyone who has that link can see those values. Do not share a link if the numbers are private.
- Technical logs. Our hosting provider (Cloudflare) may process IP addresses, browser type and request data to deliver the site, protect it from abuse and produce aggregate traffic statistics.
- Local storage. We store your cookie and advertising choice in your browser’s local storage so we do not ask you repeatedly.
Advertising and cookies
We use Google AdSense to display ads. Google and its partners are third-party vendors that use cookies, such as the DoubleClick cookie, and similar technologies to serve ads based on your visits to this and other websites. Google’s use of advertising cookies enables it and its partners to serve ads to you based on your visit to our site and/or other sites on the internet. These vendors may collect identifiers, IP address and browsing information according to their own privacy policies. We do not control those cookies.
Ads are labelled “Advertisement” and are never part of the calculator results. You can read how Google uses information from sites that use its services at policies.google.com/technologies/partner-sites.
Your choices and how to opt out of personalized ads
- Use the “Ad and cookie choices” link in the footer to change your choice on this site.
- Turn off personalized advertising in Google Ads Settings.
- Opt out of many third-party vendors’ personalized ads at aboutads.info/choices or youronlinechoices.eu (Europe).
- Block or delete cookies in your browser settings, or use a browser with tracking protection. Non-personalized ads may still be shown.
Visitors in the EEA, UK and Switzerland
Where required by law, we ask for your consent before ads that use cookies or personal data are shown, through a consent management platform. You can withdraw consent at any time using the footer link. You also have rights to access, correct, delete and restrict processing of personal data, and to complain to your local data protection authority.
California and other US states
We do not sell personal information in exchange for money. Advertising partners may collect information that some state laws treat as a “sale” or “sharing” for targeted advertising. You can opt out using the options above.
Children
The site is not directed at children under 13, and we do not knowingly collect their personal information.
Third-party links
Pages may link to other websites. We are not responsible for their content or privacy practices.
Changes
We may update this policy and will change the date above when we do.
Contact
Questions about privacy: [email protected].