Privacy Policy

This site is operated by an individual, not a company. There is no registered business entity behind it, so this policy does not reference a business registration number or a corporate address.

This site has no backend and no server that stores data. It is built as a static site: every page is pre-rendered, and the calculators run entirely inside your browser using JavaScript.

Because there is no server-side processing, the values you type into a calculator are never transmitted anywhere. They exist only in your browser's memory while you use the page, and they disappear when you close or reload it.

There is no sign-up, login, or payment feature on this site, and none is planned. We do not ask for your name, email address, or any other personal information, and we do not maintain a database of users or submissions.

Some calculators let you copy a link to share your result. That link encodes the values you entered as part of the URL's query string (for example, `?weight=70&height=175`) so that whoever opens the link sees the same calculation.

This means that if you share that link — by message, email, or posting it publicly — the input values travel with it. Anyone with the link, and potentially anyone who can see where it was posted, can see those values. Avoid sharing a result link if your inputs are sensitive.

This site sets one cookie of its own: `NEXT_LOCALE`, which remembers which of the site's five languages you last chose so you don't have to reselect it on every visit. It does not identify you personally and is not used for tracking or advertising.

This site may show advertisements served by Google AdSense. When ads are shown, Google and its advertising partners may use cookies and similar technologies to serve ads and measure their performance.

Google, as a third-party vendor, uses cookies to serve ads based on your prior visits to this and other websites. You can opt out of personalized advertising by visiting Google Ads Settings (https://www.google.com/settings/ads). You can also opt out of some third-party vendors' use of cookies for personalized advertising by visiting aboutads.info (https://www.aboutads.info/choices/).

If this site serves personalized advertising to visitors in the European Economic Area, the United Kingdom, or other jurisdictions that require prior consent, it obtains that consent through a consent management platform before any personalized ad or related cookie is set.

Because this site does not collect personal information through its own systems, there is no user data for us to retain or delete. The `NEXT_LOCALE` cookie persists in your browser according to your browser's own cookie settings until it expires or you clear it. Any data handled by Google's advertising cookies is retained according to Google's own policies, linked above.

Under South Korea's Personal Information Protection Act and comparable privacy laws, individuals have the right to access, correct, or delete their personal information, or to request that its processing be suspended. Because this site does not collect or store personal information of its own, there is generally nothing on file to access or delete.

If you believe this site holds information about you, or have any privacy question, contact us using the details below.

This site is not directed at children and does not knowingly collect information from anyone, including children, because it does not collect personal information from any visitor in the first place.

This policy may be updated as the site changes — for example, once AdSense is approved and ads go live, or if a consent management platform is added for EU/UK visitors. The date at the top of this page reflects the most recent update.