Privacy Policy

Summary (Plain English)

We respect your privacy and have designed this calculator with privacy as a priority:

  • We don't collect your personal data. No accounts, no registration, no personal information required.
  • All calculations happen in your browser. Your weight, drinking data, and BAC results are processed entirely on your device using JavaScript.
  • Nothing is stored on our servers. We have no database of user calculations or results.
  • We don't track what you calculate. Your inputs and results are not logged, monitored, or analyzed.

This policy explains in detail what information may be collected and how it's used.

Information We Don't Collect

To be clear about what we do not collect or store:

  • No account information — We don't require registration, so we don't collect usernames, passwords, or profile data
  • No calculator inputs — Your weight, gender, number of drinks, and other calculator inputs are not transmitted to any server
  • No calculation results — Your estimated BAC and other results stay in your browser only
  • No health data — We don't store any health-related information
  • No financial data — We don't process payments or collect financial information
  • No location tracking — We don't use GPS or precise location data

Information That May Be Collected

While the calculator itself collects no data, some information may be collected through standard web technologies:

Analytics

We may use basic analytics to understand how the site is used. If analytics are enabled, they may collect:

  • Pages visited and time spent
  • Referring website (how you found us)
  • General geographic region (country/city level, not precise location)
  • Device type (mobile, desktop, tablet)
  • Browser type and version
  • Operating system

This information is aggregated and anonymous—it tells us "100 people visited from the US" not "John Smith visited at 3pm."

Server Logs

Our hosting provider (Vercel) may automatically collect standard server logs including IP addresses, timestamps, and pages requested. These logs are used for security and troubleshooting purposes and are typically retained for a limited period.

Email Communication

If you contact us via email, the following information is collected:

  • Your email address
  • Your name (if provided)
  • Your message content

This data is used solely to respond to your inquiry. We do not share your email or message content with any third parties, use it for marketing, or add you to any mailing lists.

Third-Party Services

This website uses the following third-party services:

Vercel (Hosting)

Our website is hosted on Vercel. Vercel may collect standard server logs as described above. See Vercel's Privacy Policy for details.

We do not use advertising networks, third-party form processors, or sell any data to third parties.

Cookies

This website uses minimal cookies:

  • Essential cookies — May be used by our hosting provider for basic functionality and security
  • Analytics cookies — If analytics are enabled, cookies may be used to distinguish visitors

We do not use cookies for advertising, tracking across websites, or building user profiles. You can disable cookies in your browser settings, though this may affect some website functionality.

Your Rights

You have the right to:

  • Request deletion of any email correspondence by contacting us
  • Opt out of analytics by using browser privacy settings or extensions
  • Access information about what data we may have (though for most users, this is none)

Since the calculator doesn't collect personal data, there is typically nothing to delete for calculator usage.

Children's Privacy

This website is not directed at children under 13 years of age. We do not knowingly collect personal information from children under 13. The calculator itself does not collect any personal information from any user, regardless of age.

If you believe a child under 13 has submitted personal information via email, please contact us so we can delete it.

Changes to This Policy

We may update this privacy policy from time to time. When we make changes, we will update the "Last Updated" date at the bottom of this page. We encourage you to review this policy periodically.

Significant changes will be noted on this page. Continued use of the website after changes constitutes acceptance of the updated policy.

Contact Us

If you have questions about this privacy policy or your data, please contact us at:

info@bloodalcohollevelcalculator.com

You can also visit our contact page for more information.

Last Updated: January 2026