About Our EtG Calculator
What is the EtG Calculator?
The EtG Calculator is a free online tool designed to provide realistic estimates of how long Ethyl Glucuronide (EtG), a direct metabolite of alcohol, remains detectable in your system. Our calculator uses established scientific models to estimate when your EtG levels will drop below common testing thresholds (500 ng/mL or 100 ng/mL).
The Science Behind Our Calculator
Our calculator is based on peer-reviewed research on EtG metabolism and elimination. We use a first-order elimination kinetics (half-life) model that accounts for:
- The amount of alcohol consumed (standard drinks)
- Time elapsed since your last drink
- Your body weight and biological sex
- Different test sensitivity thresholds
The calculator estimates your peak EtG concentration and then models how this concentration decreases over time based on the average half-life of EtG (approximately 5 hours in most individuals).
Why We Created This Tool
We developed this calculator because we recognized a need for accurate, accessible information about EtG testing. Many people subject to alcohol monitoring programs, whether for legal, employment, or personal reasons, often lack reliable resources to understand how long alcohol may be detectable in their system.
By providing this free tool, we aim to:
- Help individuals make informed decisions about alcohol consumption
- Reduce anxiety around testing by providing science-based estimates
- Promote understanding of how alcohol metabolism works
- Provide a no-cost alternative to paid calculators that often use questionable methods
Limitations and Disclaimer
While our calculator provides estimates based on scientific principles, individual metabolism can vary significantly. Factors such as liver function, hydration levels, medications, and overall health can all affect how quickly your body processes alcohol and eliminates EtG.
Our calculator should be used for informational purposes only and not as a substitute for professional medical or legal advice.
Privacy and Data Security
We take your privacy seriously. All calculations are performed locally in your browser, and we do not store any of your personal information or calculation data. You can use our calculator with complete anonymity.
Contact Us
If you have questions, suggestions, or feedback about our EtG Calculator, please contact us at contact@etg-calculator.org.
Updates and Improvements
We are committed to continually improving our calculator based on the latest research and user feedback. Check back regularly for updates and new features.