Privacy Policy

Last updated: July 2026

The short version

Your measurements never leave your browser. We never see, store, or transmit anything you type into a calculator. All calculation happens on your device. We use Google Analytics to understand which pages people visit, never the numbers they enter. No advertising is currently served on this site.

Your measurements stay on your device

We know this page matters more here than on most sites, so let us be precise about how it works. Every calculator on Sizeaholic runs entirely in your browser using JavaScript. When you type a measurement and press calculate, the math happens on your phone or computer. Nothing is sent to our servers. There is no account, no database of inputs, and no log of what anyone entered. We could not look up your numbers if we wanted to, because they never existed anywhere except your own device.

You can verify this yourself: load a calculator page, disconnect from the internet, and it still works. That is the whole architecture.

Share links encode your inputs

Some calculators offer a "Copy link" feature so you can save or share a result. Those links work by encoding your inputs into the link itself. That is convenient, but it means anyone you send the link to can see the numbers behind it. Share those links knowingly, with people you actually want to see them.

Analytics

We use Google Analytics 4 to collect aggregate, page-level usage data: which pages are visited, how visitors found the site, browser type, and approximate location (country or city level). Analytics never receives the values you type into a calculator. This data helps us decide which tools to build and improve. Google Analytics uses cookies; you can opt out with the Google Analytics opt-out browser add-on.

Affiliate links

Some pages link to Amazon search results for products relevant to your size. As an Amazon Associate we earn from qualifying purchases made through those links. The links carry no information about you or anything you typed; they are plain product searches. Pages with affiliate links say so.

Advertising

No advertising is currently served on this site. If that ever changes, we will update this policy first.

Embedded calculators on other websites

Our calculators can be embedded on other websites. An embedded calculator works exactly like the one on our site: everything you type stays in your browser, and we never see it. The site hosting the embed has its own privacy policy, which we do not control.

Data we do not collect

We do not require accounts, do not collect names or email addresses (unless you email us), and do not sell any data to anyone.

Contact

Questions about this policy: hello@sizeaholic.com.