Privacy Policy

Last updated: April 19, 2026

Introduction

PercentageCalc (“we,” “our,” or “us”) is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard information when you visit our website and use our percentage calculator tool.

Information We Collect

Calculation Data

All percentage calculations are performed entirely within your web browser using client-side JavaScript. No calculation inputs, results, or history are transmitted to our servers. Your calculation data remains on your device and is cleared when you close your browser session.

Automatically Collected Information

When you visit our website, our web server and analytics services may automatically collect certain information, including your IP address, browser type and version, operating system, referring URL, pages visited, time spent on pages, and general geographic location. This information is collected in aggregate form and cannot identify you personally.

Cookies and Local Storage

We use cookies and browser local storage for the following purposes: remembering your dark/light mode preference, storing your cookie consent status, and enabling essential website functionality. We do not use cookies for tracking or advertising purposes without your consent.

How We Use Information

We use the automatically collected information to:

  • Operate and maintain our website
  • Analyze usage patterns to improve our tool
  • Monitor for technical issues and security threats
  • Comply with legal obligations

Third-Party Services

We may use third-party analytics services such as Google Analytics to understand how visitors use our website. These services may collect information sent by your browser, including cookies and your IP address. Please refer to the respective privacy policies of these third-party services for information on their data practices.

We may display advertisements through third-party advertising networks. These networks may use cookies and similar technologies to serve ads based on your prior visits to our website or other websites. You can opt out of personalized advertising by visiting the Digital Advertising Alliance opt-out page.

Data Security

We implement appropriate technical and organizational measures to protect the information we collect. Since calculation data never leaves your browser, it is inherently protected. For information transmitted to our servers (such as analytics data), we use encryption and secure protocols.

Your Rights Under GDPR

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

  • Right of Access: You can request a copy of the personal data we hold about you.
  • Right to Rectification: You can request correction of inaccurate personal data.
  • Right to Erasure: You can request deletion of your personal data.
  • Right to Restriction: You can request restriction of processing of your personal data.
  • Right to Data Portability: You can request transfer of your personal data.
  • Right to Object: You can object to the processing of your personal data.

Your Rights Under CCPA

If you are a California resident, you have the following rights:

  • The right to know what personal information we collect, use, and disclose.
  • The right to request deletion of your personal information.
  • The right to opt out of the sale of your personal information. We do not sell personal information.
  • The right to non-discrimination for exercising your privacy rights.

Children’s Privacy

Our website is not directed to children under 13 years of age. We do not knowingly collect personal information from children under 13. If we become aware that we have collected personal information from a child under 13, we will take steps to delete such information.

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. You are advised to review this Privacy Policy periodically for any changes.

Contact Us

If you have any questions about this Privacy Policy or wish to exercise your rights, please contact us through our Contact page.