Privacy Policy
Last updated: October 2026
This Privacy Policy describes how CalcWell ("we," "us," or "our") collects, uses, and shares information when you use our website at https://calcwell.net (the "Service").
Information We Collect
Calculator Data
We do not collect or store the data you enter into our calculators. All calculations are performed locally in your web browser using JavaScript. Your numbers and inputs never leave your device or get transmitted to our servers.
Automatically Collected Information
When you visit our website, we may automatically collect certain information through cookies and similar technologies:
- Browser type and version
- Operating system
- Pages visited and time spent
- Referring website
- General geographic location (country/region level)
- Device type (mobile, tablet, desktop)
Cookies and Tracking Technologies
We use cookies and similar tracking technologies to improve your experience and analyze site usage. You can control cookies through our consent banner and your browser settings.
Essential Cookies
These cookies are necessary for the website to function and cannot be switched off. They include cookies for remembering your cookie consent preferences.
Analytics Cookies
We use Google Analytics to understand how visitors interact with our website. Google Analytics uses cookies to collect information about your use of the website, including:
- Pages viewed
- Time spent on pages
- How you arrived at our site
- Your interactions with site features
You can opt out of Google Analytics by declining cookies in our consent banner or by installing the Google Analytics opt-out browser add-on.
Advertising Cookies
We display advertisements through Google AdSense. Google and its advertising partners may use cookies to show you personalized ads based on your interests. These cookies track your browsing activity across websites to build a profile of your interests.
You can opt out of personalized advertising by:
- Declining cookies in our consent banner
- Visiting Google's Ads Settings
- Visiting the Digital Advertising Alliance opt-out page
Google Consent Mode v2
We implement Google Consent Mode v2 to respect your privacy choices. When you decline cookies, we adjust how Google services operate to limit data collection while still allowing basic site functionality.
Third-Party Services
We use the following third-party services:
- Google Analytics: For website analytics and performance monitoring
- Google AdSense: For displaying advertisements
- Vercel: For website hosting and content delivery
Each of these services has their own privacy policies governing their use of your data.
Data Retention
Analytics data is retained according to Google Analytics default settings. We do not retain any personal data from calculator usage as we do not collect it.
Your Rights
Depending on your location, you may have the right to:
- Access the personal data we hold about you
- Request correction of inaccurate data
- Request deletion of your data
- Object to processing of your data
- Withdraw consent at any time
To exercise these rights, please contact us.
Children's Privacy
Our Service is not directed to children under 13. We do not knowingly collect personal information from children under 13. If you believe we have collected information from a child under 13, please contact us immediately.
Changes to This Policy
We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last updated" date.
Contact Us
If you have any questions about this Privacy Policy, please contact us.