Policy

Privacy policy for UnitConversion.free

Last updated:

UnitConversion.free is operated by Kevin Kinnett and is designed to run with minimal personal data. Conversion logic executes entirely in your browser, so the inputs you enter never leave your device. This page explains exactly what information the site does collect, how it's used, and how you can request access or deletion.

Information the site does not collect

Conversion inputs are not sent to a server. Every value you type into a calculator on this site is processed in your browser by the in-page JavaScript catalog and conversion engine. The numbers you enter, the units you select, and the results displayed are not transmitted to UnitConversion.free or to any third party.

The site does not require an account. There is no sign-up, no login, and no per-user profile. The site does not collect names, email addresses, phone numbers, postal addresses, payment information, or any other personally identifying information through ordinary use of the calculator pages.

The site does not run advertising trackers at this time. Google AdSense integration is planned (the site's ads.txt is set up in anticipation), but ads are not currently served. If and when AdSense begins serving, this policy will be updated to describe the resulting cookie and tracking behavior.

Information the site does collect

Analytics (Google Analytics 4). The site uses Google Analytics 4 to understand which pages and unit pairs are visited. GA4 sets cookies that record a randomized client identifier so that returning visits can be associated to the same browser, but the identifier is not tied to any personal identity by UnitConversion.free. Standard GA4 dimensions are captured: page path, referrer, country (derived from IP at Google's edge, not stored by this site), device category, browser, and event timing. The site does not capture form-field inputs or any user-entered values.

Local storage (theme preference). Your choice of light, dark, or system theme is stored in your browser's local storage under a single key so the choice persists across reloads. Local storage is local to your browser and is not sent to a server. Clearing your browser's site data will erase the theme preference.

Standard server logs. The hosting provider (Azure Static Web Apps, fronted by Cloudflare) records normal HTTP request logs for operational and security purposes: timestamp, requested URL, user-agent, IP address. These logs are used to diagnose outages, mitigate abuse, and produce aggregate traffic statistics. They are retained per Microsoft and Cloudflare's standard policies and are not linked to any UnitConversion.free user account (there is no account system).

Cookies and similar technologies

The cookies and storage items currently used by the site:

  • Google Analytics 4 cookies (typically named _ga and _ga_<measurement-id>). Used by GA4 to distinguish unique browsers and sessions. Expiration: up to two years from the last visit.
  • Theme preference (local storage). A single key recording your light/dark/system choice. Persists until cleared.

If you wish to opt out of GA4 entirely, you can install the Google Analytics opt-out browser add-on, use a browser-level "Do Not Track" or content-blocker, or clear cookies for this site. None of those choices affect calculator functionality.

Third-party services

Google Analytics 4 (analytics) is the only third-party service currently integrated. Its data handling is governed by Google's privacy policy.

Google AdSense is planned but not currently serving ads on this site. When AdSense begins serving, it will set its own advertising cookies and may use device fingerprinting per Google's advertising policies. This policy will be updated to describe that integration before ads are enabled.

Hosting and CDN: the site is hosted on Azure Static Web Apps with Cloudflare as the CDN front. Both providers receive request logs as part of normal hosting operation.

Your rights and how to exercise them

Because UnitConversion.free does not collect personally identifying information directly, there is generally no account or user profile to access, modify, or delete. If you have a privacy question, an analytics-opt-out concern, or any other privacy-related request, contact [email protected] and the operator will respond as soon as practical.

For users covered by GDPR (EU/UK), CCPA (California), or other comprehensive privacy frameworks: the lawful basis for the analytics processing described above is legitimate interest in understanding site usage. The site does not sell personal information to third parties and does not engage in cross-context behavioral advertising at this time. Privacy-rights requests can be sent to the address above.

Children

UnitConversion.free is a general-audience calculator site and is not directed at children under 13. The site does not knowingly collect personal information from children. If you believe a child has provided personal information through the site, please contact the operator and any such information will be deleted.

Updates to this policy

This privacy policy is updated when site behavior changes (for example, when AdSense begins serving, when a new third-party service is added, or when applicable law changes). The "last updated" date at the top of this page reflects the most recent revision. Material changes will be reflected in the page content rather than communicated by email, because the site does not maintain an email list.

Contact

Privacy questions: [email protected]. Operator: Kevin Kinnett (see about and kevinkinnett.com).