Privacy policy
Last updated: June 2026
This policy explains what information calcgeeks collects, how it's used, and the choices you have. In short: the calculators run entirely in your browser, we don't ask you to create an account, and the main data collection on this site comes from advertising and analytics cookies.
The short version
- Our calculators process your inputs in your browser. We don't receive or store the numbers you type into them.
- We don't require registration and we don't ask for personal information to use the tools.
- Like most free sites, we use third-party advertising and analytics that rely on cookies. You can control these (details below).
Information we collect
Information you actively provide
If you email us through the contact page, we receive whatever you choose to send — typically your email address and message. We use it only to reply and, where relevant, to fix a reported problem.
Information collected automatically
When you visit, standard technical information may be collected automatically by our hosting provider and by the third-party services below: your IP address, browser type and version, device type, referring page, and pages viewed. This is used to keep the site secure, understand which calculators are useful, and serve advertising.
Calculator inputs
The numbers and dates you enter into a calculator are processed locally by JavaScript running in your browser. They are not transmitted to us or stored on a server by calcgeeks.
Cookies and advertising
calcgeeks uses cookies and similar technologies, including for advertising and analytics.
- Third-party vendors, including Google, use cookies to serve ads based on a user's prior visits to this and other websites.
- Google's use of advertising cookies enables it and its partners to serve ads to you based on your visit to calcgeeks and/or other sites on the internet.
- You may opt out of personalized advertising by visiting Google Ads Settings. You can also opt out of some third-party vendors' use of cookies for personalized advertising at aboutads.info.
- We may use analytics cookies (such as Google Analytics) to understand aggregate, anonymized usage of the site.
Most browsers let you block or delete cookies in their settings. Blocking cookies will not stop the calculators from working, though it may affect the ads you see.
How we use information
- To operate, maintain, and secure the website.
- To understand which tools are used so we can improve and expand them.
- To display advertising that helps keep calcgeeks free.
- To respond to messages you send us.
Your rights and choices
Depending on where you live (for example, under the EU/UK GDPR or the California CCPA/CPRA), you may have the right to access, correct, or delete personal information we hold about you, and to opt out of the "sale" or "sharing" of personal information as those terms are defined by law. Because we don't maintain user accounts, the data we directly hold is minimal. To make a request or ask a question about your data, contact us using the contact page.
Children's privacy
calcgeeks is intended for a general audience and is not directed to children under 13. We do not knowingly collect personal information from children. If you believe a child has provided us information, contact us and we will delete it.
Data retention and security
We keep email correspondence only as long as needed to handle your request. We take reasonable measures to protect information, but no method of transmission over the internet is completely secure.
Changes to this policy
We may update this policy from time to time. When we do, we'll revise the "last updated" date at the top of the page. Significant changes will be reflected here.
Contact
Questions about this policy? Reach us through the contact page.