Last updated: May 2026
Overview
CalcHub ("we," "us," or "our") operates calchub.digital, a collection of free online calculators covering financial, health, and technology topics. This Privacy Policy explains what information is collected when you visit our site, how it is used, and what choices you have.
The short version: CalcHub's calculators run entirely in your browser. We do not collect, store, or transmit any of the numbers you enter into our calculators. No account is required. No form submissions are sent to our servers.
Information We Collect
CalcHub does not directly collect personal information from visitors. However, third-party services integrated into this site — specifically Google AdSense and Google Analytics — may collect certain data automatically when you visit:
- IP address (used to determine approximate geographic region)
- Browser type and version
- Pages visited and time spent on each page
- Referring website (what site brought you to CalcHub)
- Device type (desktop, mobile, tablet)
This information is collected through cookies and similar tracking technologies. We do not receive individual-level data from these services — we see aggregate analytics only.
Calculator Data
All calculator inputs — income figures, debt amounts, health data, API usage numbers, and any other values you enter — are processed entirely within your browser using JavaScript. No calculator input data is sent to CalcHub's servers or to any third party. When you close or refresh the page, all entered values are discarded.
Cookies
CalcHub itself does not set cookies. Third-party services integrated into this site set the following types of cookies:
- Google Analytics cookies — used to measure site traffic and understand how visitors use our calculators
- Google AdSense cookies — used to serve personalized or non-personalized advertisements based on your browsing history and interests
You can opt out of personalized advertising by visiting Google's Ad Settings, or by visiting aboutads.info for industry-wide opt-out options. You can also disable cookies entirely in your browser settings, though this may affect the functionality of some web services.
Google AdSense
CalcHub participates in the Google AdSense program, which serves advertisements on our pages. Google uses cookies to serve ads based on your prior visits to this and other websites. Google's use of advertising cookies enables it and its partners to serve ads to users based on their visits to this site and other sites on the internet.
For more information about how Google uses data when you use our site, visit Google's Privacy & Terms. To opt out of personalized ads from Google, visit Google Ad Settings.
Google Analytics
We use Google Analytics to understand how visitors interact with CalcHub — which calculators are most used, where visitors come from, and how long they spend on each page. This data helps us improve our calculators and content. Google Analytics collects data anonymously and reports website trends without identifying individual visitors.
You can opt out of Google Analytics tracking by installing the Google Analytics Opt-out Browser Add-on.
Third-Party Links
Some of our content links to external websites — for example, government data sources, financial institutions, or medical reference sites. CalcHub is not responsible for the privacy practices of these external sites. We encourage you to review the privacy policy of any external site you visit.
Children's Privacy
CalcHub is not directed at children under 13 years of age. We do not knowingly collect personal information from children. If you believe a child has provided personal information to us, please contact us at the address below and we will promptly delete it.
Your Rights (GDPR and CCPA)
If you are located in the European Economic Area or California, you may have additional rights regarding your personal data, including:
- The right to access information held about you
- The right to request deletion of your personal data
- The right to opt out of the sale of personal information (CalcHub does not sell personal information)
- The right to non-discrimination for exercising privacy rights
Because CalcHub does not directly collect personal information, most of these rights apply to data held by Google Analytics and Google AdSense. To exercise rights related to that data, please use the tools provided by Google at myaccount.google.com.
Changes to This Policy
We may update this Privacy Policy from time to time to reflect changes in our practices or applicable law. We will update the "Last updated" date at the top of this page when we do. We encourage you to review this policy periodically.
Contact
If you have questions about this Privacy Policy or CalcHub's data practices, you can reach us by visiting calchub.digital. We aim to respond to all privacy inquiries within 30 days.