Privacy Policy
Last Updated: February 2026
Overview
Compound Interest Calculator ("we," "our," or "us") operates the website calculatecompoundinterest.org. This Privacy Policy explains what information we collect, how we use it, and your rights regarding your data.
The short version: all calculations happen in your browser. We do not store your financial data.
Information We Do Not Collect
Our calculator runs entirely client-side using JavaScript in your web browser. The following data never leaves your device and is never transmitted to our servers:
- Investment amounts and principal values you enter
- Interest rates and compounding frequencies you select
- Calculation results, projected growth figures, and chart data
- Any financial information you input into the calculator
We have no ability to access, view, or reconstruct your calculations. When you close or refresh the page, all entered data is discarded.
Information That May Be Collected
Analytics Data
We may use anonymous analytics services to understand how visitors use our site. This may include:
- Pages visited and time spent on each page
- Referring website or search engine
- Browser type and operating system
- General geographic region (country/city level, not precise location)
- Device type (desktop, mobile, tablet)
This data is aggregated and anonymized. It cannot be used to identify individual users.
Contact Form Submissions
If you contact us via email or a contact form, we collect the information you voluntarily provide (such as your name, email address, and message content). This information is used solely to respond to your inquiry and is not shared with third parties.
Server Logs
Our hosting provider may automatically log standard server request information, including IP addresses, timestamps, and requested URLs. These logs are used for security monitoring and are retained according to our hosting provider's policies.
Cookies
Our site may use essential cookies to ensure proper functionality. We do not use advertising cookies or tracking pixels. If third-party analytics are enabled, they may set their own cookies according to their respective privacy policies.
Third-Party Services
We use the following third-party services to operate this website:
- Vercel — Website hosting and content delivery. Vercel Privacy Policy
- Formspree — Contact form processing. Formspree Privacy Policy
Each third-party service has its own privacy policy governing how they handle data. We encourage you to review their policies.
Data Security
We take reasonable measures to protect the limited data we collect. Our site is served over HTTPS to encrypt data in transit. Since our calculator processes all data client-side, there is no financial data stored on our servers that could be compromised.
Children's Privacy
Our website is not directed at children under 13 years of age. We do not knowingly collect personal information from children. If you believe we have inadvertently collected information from a child, please contact us so we can promptly delete it.
Your Rights
Depending on your jurisdiction, you may have the right to:
- Request access to any personal data we hold about you
- Request correction or deletion of your personal data
- Object to or restrict the processing of your data
- Request a copy of your data in a portable format
To exercise any of these rights, please contact us at the email address below.
Changes to This Policy
We may update this Privacy Policy from time to time. Any changes will be posted on this page with an updated "Last Updated" date. We encourage you to review this page periodically.
Contact Us
If you have questions about this Privacy Policy or how we handle your data, please contact us or email:
Related Calculators
Try our free financial calculators. All calculations run in your browser — your data stays private.