Privacy Policy

2.1 Information You Provide to Us

We do not require you to create an account or provide personal information to use our calculators. All calculator inputs remain on your device and are not transmitted to our servers. Your financial calculations, health metrics, and personal data stay completely private.

2.2 Automatically Collected Information

When you visit our Site, we automatically collect certain information about your device:

• Log Data: IP address, browser type, operating system, referring URLs, pages viewed, and access times
• Device Information: Device type, screen size, and browser settings
• Usage Data: Which calculators you use and how you interact with our Site

2.3 Cookies and Similar Technologies

We use cookies and similar tracking technologies. Cookies are small data files stored on your device:

• Essential Cookies: Required for the Site to function (theme preferences, last calculator used)
• Analytics Cookies: Google Analytics to understand Site usage and improve calculators
• Advertising Cookies: Google AdSense to serve relevant advertisements

4.1 Google Analytics

We use Google Analytics to understand how our Site is used. This helps us know which calculators are most helpful, where to add new features, and how to improve the user experience. Google Analytics collects your IP address, browser information, and pages visited—but not your calculator inputs or personal calculations.

Learn more about how Google uses data at Google Privacy Policy.

4.2 Google AdSense

We use Google AdSense to serve advertisements on our Site. Ads keep our calculators free for everyone. Google AdSense uses cookies to serve ads based on your interests and prior visits. You can opt out of personalized advertising by visiting Google Ads Settings.

4.3 Third-Party Websites

Our Site may contain links to third-party websites (educational resources, financial institutions, health organizations). We are not responsible for the privacy practices of these websites. Always review the privacy policies of any sites you visit.

7.1 Cookie Management

You can control cookies through your browser settings. Most browsers allow you to refuse cookies or delete cookies. Note that if you disable essential cookies, some features (like theme preferences) may not work properly. Analytics and advertising can be blocked without affecting calculator functionality.

7.2 Do Not Track

Our Site does not currently respond to Do Not Track (DNT) signals. However, you can use browser extensions like Privacy Badger or uBlock Origin to block tracking. Learn more about DNT at allaboutdnt.com.

7.3 GDPR Rights (European Users)

If you are located in the European Economic Area (EEA), you have these data protection rights:

• Right to access: Request a copy of your personal data
• Right to rectification: Correct inaccurate data
• Right to erasure: "Right to be forgotten"—request deletion of your data
• Right to restrict processing: Limit how we use your data
• Right to data portability: Receive your data in a portable format
• Right to object: Object to processing of your data

To exercise these rights, contact us at the email address below. We will respond within 30 days.

7.4 CCPA Rights (California Users)

If you are a California resident, you have specific rights under the California Consumer Privacy Act (CCPA):

• Right to know: What personal information is collected and how it's used
• Right to deletion: Request deletion of your personal information
• Right to opt-out: We do not sell personal information
• Right to non-discrimination: We won't discriminate against you for exercising your rights