Updated on 2026-09-15

Privacy Policy

This Privacy Policy explains how the Resistor Replacement Calculator handles your information when you use our service.

Information We Collect

Calculation Data

  • Input Values: The resistance values, units, and E-series selections you enter into the calculator
  • Calculation Results: The combinations and configurations generated by our tool
  • Usage Patterns: Which features you use most frequently to help us improve the service

Technical Information

  • Browser Information: Browser type, version, and capabilities for optimal performance
  • Device Data: Screen size and device type to provide responsive design
  • Performance Metrics: Page load times and calculation speeds for optimization

Analytics Data

  • Anonymous Usage Statistics: How often different calculator features are used
  • Geographic Information: General location data (country/region level) for localization
  • Session Data: Duration of visits and pages viewed (no personal identification)

What We Don't Collect

  • No Personal Information: We don't require or collect names, email addresses, or contact information
  • No Account Creation: The calculator works without registration or login
  • No Stored Calculations: Your resistance calculations are not saved or stored on our servers
  • No Tracking Across Sites: We don't track your activity on other websites

How We Use Information

Service Improvement

  • Optimize calculator performance and accuracy
  • Identify which E-series values are most commonly needed
  • Improve user interface based on usage patterns
  • Fix bugs and enhance functionality

Technical Operations

  • Ensure the calculator works properly on different devices and browsers
  • Monitor system performance and uptime
  • Prevent abuse and maintain service quality

Data Storage and Security

Local Processing

  • All resistance calculations are performed in your browser
  • No calculation data is transmitted to or stored on our servers
  • Your input values remain private to your session

Security Measures

  • Industry-standard encryption for any data transmission
  • Regular security audits and updates
  • No sensitive data storage that could be compromised

Third-Party Services

Analytics

We use privacy-focused analytics services to understand how the calculator is used:

  • Data is anonymized and aggregated
  • No personal identification is possible
  • You can opt out using browser settings or ad blockers

Advertising

We display banner advertisements from third-party networks, including Adsterra and Google AdSense:

  • These partners may use cookies or similar technologies to serve ads
  • Ads help keep the calculator free to use
  • You can block ads using browser settings or an ad blocker

Content Delivery

  • We use content delivery networks (CDNs) to ensure fast loading times
  • These services may log basic technical information for performance optimization

Your Rights and Choices

Browser Controls

  • Use private/incognito browsing mode for additional privacy
  • Clear browser data to remove any locally stored preferences
  • Disable JavaScript to use basic calculator functions (with reduced features)

Opt-Out Options

  • Block analytics using browser extensions or settings
  • Use the calculator without accepting optional cookies
  • Contact us to request information about data processing

Children's Privacy

Our calculator is safe for educational use by students of all ages. We don't knowingly collect personal information from children under 13, and the tool doesn't require any personal data to function.

International Users

The calculator is designed for global use by the electronics community. We comply with international privacy standards including GDPR for European users and similar regulations worldwide.

Changes to This Policy

We may update this privacy policy to reflect changes in our practices or legal requirements. Any updates will be posted on this page with a new "last updated" date.

Contact Us

For questions about this privacy policy or our data practices, please contact our development team. We're committed to transparency and will respond to privacy inquiries promptly.