Privacy Policy

Last updated: March 2026

Overview

CalcJar ("we," "us," or "our") operates the CalcJar website (the "Service"). This page explains our policies on the collection, use, and disclosure of information when you use our Service, and the choices you have associated with that data.

Information We Collect

Calculator Inputs

All calculations performed on CalcJar run entirely in your browser. We do not transmit, store, or log any numbers or values you enter into our calculators. Your financial and personal data never leaves your device.

Usage Data

Like most websites, we automatically collect certain information when you visit the Service, including your browser type, browser version, the pages you visit, the time and date of your visit, time spent on pages, and other diagnostic data. This data is collected through standard web server logs and third-party analytics. It is aggregated and does not personally identify you.

Cookies

Our website does not use first-party cookies for tracking. However, third-party services such as Google AdSense may place cookies on your device to serve relevant advertisements. You can control cookie preferences through your browser settings or the opt-out links below.

How We Use Your Information

We use the data we collect to:

• Provide, maintain, and improve the Service
• Monitor and analyze usage patterns and trends
• Detect and address technical issues
• Display relevant advertisements through Google AdSense

Google AdSense & Advertising

We use Google AdSense to display advertisements on our Service. Google AdSense uses cookies to serve ads based on your prior visits to our website and other websites on the internet.

You may opt out of personalized advertising by visiting Google Ads Settings. Alternatively, you can opt out of third-party vendor cookies by visiting aboutads.info.

Google's use of advertising cookies enables it and its partners to serve ads based on your visit to our site and/or other sites on the internet. For more information, review Google's Privacy Policy.

Third-Party Services

Our Service may contain links to external sites not operated by us. We have no control over the content and privacy practices of those sites and are not responsible for their policies. We encourage you to review the privacy policy of every site you visit.

Data Retention

Because we do not collect personal data from calculator inputs, there is no such data to retain. Aggregated, anonymized usage analytics may be retained indefinitely to help us improve the Service.

Data Security

The security of your data is important to us. Because all calculator inputs are processed locally in your browser, no financial or personal data is transmitted to our servers. We use commercially reasonable measures to protect the aggregated usage data we do collect.

Children's Privacy

Our Service is not directed at anyone under the age of 13. We do not knowingly collect personally identifiable information from children under 13. If you believe your child has provided us with personal data, please contact us and we will take steps to remove it.

Your Rights

Depending on your location, you may have rights regarding your personal data, including the right to access, correct, or request deletion of data we hold about you. Because CalcJar does not collect personal data through its calculators, most such requests will not be applicable. For questions, please contact us.

Changes to This Policy

We may update this Privacy Policy from time to time. Changes will be posted on this page with an updated revision date. We recommend reviewing this page periodically.

Contact

If you have any questions about this Privacy Policy, please visit our contact page or email us at hello@calcjar.com.