Last updated: 2026.
This Privacy Policy explains how Hiseem ("we," "our," "the site") handles information when you visit hiseem.com. We built Hiseem to require as little data as possible from visitors, and the sections below describe exactly what is and isn't collected.
The numbers and options you enter into any calculator on this site (for example, a weight in grams, a temperature, or a pan size) are processed entirely within your own web browser using JavaScript. This data is never transmitted to, or stored on, our servers. Closing or refreshing the page clears it completely.
We use, or plan to use, Google Analytics (GA4) to understand overall traffic patterns — for example, which pages are visited and how many people find the site useful. Google Analytics uses cookies and similar technologies to collect standard log and usage data, such as pages viewed, approximate location (city/country level), device and browser type, and referring website. This information is aggregated and does not include the values you type into any calculator. You can find out more about how Google handles this data at policies.google.com/privacy, and you can opt out of Google Analytics tracking using the Google Analytics Opt-out Browser Add-on.
We may display advertisements through third-party advertising networks, such as Google AdSense, to help cover the cost of running this site. These networks may use cookies or similar technologies to serve ads based on your prior visits to this or other websites. You can learn more about how Google uses data for advertising and manage your preferences at policies.google.com/technologies/ads, and manage ad personalisation at adssettings.google.com.
Cookies used on this site (via analytics or advertising partners described above) are limited to those set by those third-party services. We do not set our own tracking cookies. You can control or delete cookies through your browser settings at any time; doing so may not affect how our calculators function, since they don't rely on cookies to work.
Hiseem is a general-audience reference and calculator site and does not knowingly collect personal information from children.
We may update this Privacy Policy from time to time as the site or the services it uses change. Continued use of the site after an update constitutes acceptance of the revised policy. Significant changes will be reflected by an updated "last updated" date at the top of this page.
Questions about this policy can be sent to hello@hiseem.com or via the Contact page.