Privacy

This calculator runs entirely in your browser. Entering your weight and height makes no network request and is never sent to us or anyone else.

Comments

If you post a comment, we store your name and comment text (both shown publicly once approved), a one-way hash of your IP address, and your browser's user-agent string — used only to catch spam and enforce a submission limit. We never store your raw IP address. Comments that are rejected as spam are deleted automatically after 30 days.

Everything else

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