%PercentageCalculator.dev

Privacy Policy

Last Updated: July 20, 2026

At PercentageCalculator.dev, accessible from https://percentagecalculator.dev, we are committed to protecting your privacy. This Privacy Policy describes how we handle information when you visit and use our website.

1. Information We Collect (and Don’t Collect)

Calculation Inputs Processed Locally

We do not collect, record, or store your mathematical inputs. All numbers, values, and formulas entered into our percentage calculators are processed entirely locally in your web browser using JavaScript. No calculation values are ever transmitted to or stored on our servers.

Google Analytics & Traffic Logs

We collect standard web traffic log data using Google Analytics (GA4). This information includes pseudonymous identifiers, such as:

  • Your general geographical region (city/country level).
  • Browser type, device model, and operating system.
  • Usage metrics (pages viewed, time on page, referring URLs).
  • Masked/anonymized IP addresses.

Hosting & Server Logs

Our website hosting infrastructure automatically collects standard server access logs (including IP addresses and request timestamps) strictly for performance monitoring, network safety, and DDoS mitigation.

2. How Analytics Data is Used

The analytics data we collect is processed in aggregate. We use this information solely to analyze site traffic trends, diagnose technical errors, optimize mobile and desktop performance, and improve the overall user experience. We do not use this data to identify individual users or build personal profiles.

3. Third-Party Disclosures & Advertising

We do not sell, trade, or rent your personal information to third parties, nor do we sell personal data as defined under the California Consumer Privacy Act (CCPA/CPRA).

Google Analytics Disclosures

This website uses Google Analytics to help us understand visitor interactions. In accordance with Google's Terms of Service, we disclose that Google Analytics collects and processes data. You can learn more about how Google handles data by visiting Google's Privacy & Terms page.

4. Cookie Disclosures & User Control

We use cookies (small text files saved on your device) to power web analytics and remember your consent choices.

We use CookieYes consent management settings to give you full control over performance and analytics cookies:

  • First Visit Consent: You can accept or decline performance/analytics cookies using the banner displayed when you first visit the site.
  • Managing Preferences: You can update or revoke your preferences at any time by clicking the CookieYes widget or "Cookie Settings" link in the website footer.
  • Browser Opt-Out: You can permanently disable Google Analytics tracking across all websites by installing the official Google Analytics Opt-out Browser Add-on.

5. Children’s Privacy

PercentageCalculator.dev is a general educational utility and does not knowingly collect personal information from children under the age of 13 (or 16 in applicable legal jurisdictions).

6. Updates to This Policy

We reserve the right to update this Privacy Policy as needed to reflect changes in our tech stack, service providers, or legal requirements. Any modifications will be posted directly to this page with an updated "Last Updated" date.

7. Contact Information

PercentageCalculator.dev is operated as a privacy-first, client-side utility site. Because we do not require user accounts, process personal identifiers, or store user submission data, we do not collect or maintain contact databases.