This Privacy Policy explains how OnlineUnitCalc ("we", "our", "us", or "the Website"), accessible at onlineunitcalc.com, collects, uses, and protects information when you visit and use our tools. We are committed to being transparent about our data practices and respecting your privacy rights under applicable law, including the European Union's General Data Protection Regulation (GDPR) and the California Consumer Privacy Act (CCPA).
1. How Our Tools Process Your Data
Your privacy is a core architectural principle of OnlineUnitCalc. Every tool on this platform processes your input locally within your web browser. Whether you are uploading a file, formatting code, performing a unit conversion, or generating a cryptographic hash, the content you input into our tools is processed entirely by your browser's JavaScript engine.
Your tool inputs are not transmitted to, stored on, or analyzed by our servers. We have no access to the content you enter into any of our calculators, converters, or formatters. This is a fundamental design decision, not merely a policy statement.
2. Information We Collect Automatically
When you visit OnlineUnitCalc, we use third-party services that may automatically collect certain non-personal information about your visit. This includes:
- IP Address: Used by Google Analytics to determine approximate geographic location (country/region level) for aggregate traffic analysis. Your full IP address is anonymized before storage.
- Browser and Device Information: Browser type, operating system, screen resolution, and device type, collected by Google Analytics to understand how users access the site.
- Page Views and Navigation: Which pages you visited, how long you spent on each, and how you navigated between pages, used to understand which tools are most popular.
- Referral Source: The website or search engine that referred you to OnlineUnitCalc, used to understand our traffic sources.
This data is collected in aggregate and anonymized form. We do not use this data to identify individual users.
3. Third-Party Services We Use
We use the following third-party services on our website:
- Google Analytics 4 (GA4): We use Google Analytics to understand aggregated traffic patterns, user behavior, and tool popularity. We have implemented Google Consent Mode v2, meaning analytics data is only collected after you explicitly accept cookies via our cookie consent banner. You can opt out at any time by visiting Google Analytics Opt-Out.
- Google AdSense: We display advertisements served by Google AdSense to help fund the free operation of this website. Google AdSense may use cookies to show you personalized advertisements based on your browsing history. AdSense is only activated after you accept cookies. You can manage your ad personalization at Google Ad Settings. To learn more about interest-based advertising, visit aboutads.info.
These services are governed by their own privacy policies. We encourage you to review Google's Privacy Policy to understand how they handle your data.
4. Cookies and Local Storage
OnlineUnitCalc uses two types of browser-based storage:
- Browser localStorage: We use localStorage (not cookies) to save your preferences locally on your device — dark/light mode preference, favorite tools list, and temporary notepad drafts. This data stays on your device and is never transmitted over the network.
- Third-Party Cookies: Google Analytics and Google AdSense may set cookies on your device, but only after you provide explicit consent via our Cookie Consent banner. If you decline, no tracking cookies will be set.
You can manage or delete all browser cookies and localStorage data at any time through your browser's settings.
5. Your Rights (GDPR & CCPA)
Depending on your location, you may have the following rights regarding your personal data:
- Right to Access: You have the right to request a copy of any personal data we hold about you.
- Right to Erasure ("Right to Be Forgotten"): You have the right to request deletion of any personal data we hold about you.
- Right to Object: You have the right to object to the processing of your personal data for direct marketing or profiling purposes.
- Right to Restrict Processing: You may request that we limit the processing of your personal data in certain circumstances.
- Right to Data Portability: You have the right to receive your personal data in a structured, machine-readable format.
- Right to Opt-Out of Sale (CCPA): California residents have the right to opt out of the sale of their personal information. We do not sell personal information. You can opt out of ad personalization via Google Ad Settings.
- Right to Withdraw Consent: You can withdraw cookie consent at any time by clearing your cookies in browser settings and declining the banner on your next visit.
6. Children's Privacy
OnlineUnitCalc is not directed at children under the age of 13. We do not knowingly collect any personal information from children under 13. If you believe a child has provided us with personal information, please contact us and we will take steps to delete such information immediately.
7. Changes to This Policy
We reserve the right to update this Privacy Policy at any time. When we make material changes, we will update the "Last Updated" date at the top of this page. We encourage you to review this page periodically.
8. Contact Us
If you have any questions or requests regarding this Privacy Policy or your personal data, please contact us via our Contact page. We aim to respond to all privacy inquiries within 30 days.