Privacy & Security Policy
What this site collects, what stays on your device, and how to contact the maintainer.
Your measurements and messages
The calculator runs on your phone or computer. It does not send your measurements to a server or save them. The site collects limited usage counts without tracking cookies or a lasting visitor ID. Developers who use the calculation APIs send measurements to the server over HTTPS; the application calculates the result without saving those inputs.
Sharing includes your ratio, service, result label, and a link to HeightWaist.com. It leaves out height, waist measurements, and sex. You choose where to share through your device’s share menu or by pasting the copied text into another app.
Contact and feedback messages go to the maintainer’s inbox. Your name and email are used to reply, never added to a marketing list or sold. Feedback does not require an email address unless you want a reply.
This project was built with personal equipment on personal time. No government equipment, systems, or duty time were used in its development or operation.
Technical details
Calculations run in your browser. A Cloudflare Worker serves the site and handles API requests without saving height or waist inputs. Only your appearance preference (automatic, light, or dark) is saved in localStorage. Measurements and results are not saved. Usage events sent to this site may include the calculator page and selected service, predefined actions and error categories, referring hostname, approved campaign code, broad device/browser category, country and region, and app version. No measurements, ratios, compliance results, sex, free-text fields, or full URLs are included. Do Not Track and Global Privacy Control suppress browser usage events. Event counts do not tell us how many individual people used the site or whether they belong to the selected service. Analytics Engine currently retains events for three months; we do not export individual event records for longer retention.
Sharing uses the browser’s Web Share API. If that is unavailable, the app copies the share text to your clipboard. Neither method includes height, waist measurements, or sex.
The browser sends usage events to this site. Contact and feedback forms also send requests and use bot verification. Developers can submit measurements to /api/compliance or /api/ai/calculate over HTTPS. Those endpoints calculate results without saving the inputs. Contact forms send your name, email, and message over HTTPS to the Cloudflare Worker, which forwards them through Resend. Feedback includes the page, selected calculator, and app version, with an optional reply email. Contact and feedback messages are delivered through Resend to a private inbox for support and product improvements, separately from analytics. The app has no feedback database. Messages remain in the inbox until deleted; you can request deletion through this form. Cloudflare processes network metadata to deliver and protect the service. API GET query strings contain supplied inputs, so infrastructure logging must not be configured to retain full calculation URLs or request bodies.
Dataset Reuse Terms
The structured standards metadata and API descriptions created by HeightWaist.com may be reused with attribution to HeightWaist.com and a link to this site. This permission does not change the ownership or reuse terms of the underlying U.S. government source documents, which remain subject to the terms and restrictions of their original publishers.
Contact