Realistic EtG Calculator - Free & Instant
Get a realistic estimate of your EtG elimination time with our free EtG calculator. Input drinks, time, and test cutoff for an instant, anonymous result.
Realistic EtG Calculator
What is an EtG Calculator?
A science-based tool to estimate alcohol elimination time for EtG testing.
Why Choose Our EtG Calculator?
The most realistic, accurate, and user-friendly EtG calculator available online
Realistic Estimates
Based on scientific half-life decay models to provide the most realistic EtG detection times possible.
Test Cutoff Selection
Choose between standard (500 ng/mL) and high-sensitivity (100 ng/mL) test cutoff levels for more accurate results.
Visual Results
View your EtG concentration over time with our interactive chart, showing exactly when you'll pass your test.
Completely Free
No cost, no registration, no data collection - just accurate, instant results.
Mobile-Friendly
Use our calculator anywhere, anytime on any device with our responsive design.
100% Anonymous
We don't store any of your personal information or calculation data.
How to Use the EtG Calculator
Get your personalized EtG elimination estimate in four simple steps
Enter Alcohol Consumed
Input the number of standard drinks you consumed (1 standard drink = 12oz beer = 5oz wine = 1.5oz liquor)
Select Last Drink Time
Choose the date and time when you finished your last alcoholic drink
Input Personal Details
Enter your body weight and select your biological sex for more accurate results
View Your Results
Get your estimated EtG elimination time and view the concentration chart showing when you'll pass your test
Understanding EtG Calculator Parameters
How each input affects your EtG elimination estimate
Standard Drinks
The number of standard alcohol servings consumed
Last Drink Time
When you finished your final alcoholic beverage
Body Weight
Your current body weight
Biological Sex
Affects metabolism rate estimation
Test Cutoff Level
The sensitivity threshold of your EtG test
The Science Behind Our EtG Calculator
How We Calculate EtG Elimination Time
EtG Concentration Formula
Our calculator uses a first-order elimination kinetics (half-life) model to estimate EtG concentration over time
C(t) = C₀ × (0.5)^(t / T₁/₂) Example: If peak EtG is 1000 ng/mL and half-life is 5 hours, after 10 hours concentration would be approximately 250 ng/mL
Peak EtG Estimation
We estimate initial peak EtG concentration based on alcohol consumed, body weight, and biological sex
C₀ = (Standard Drinks × 35000) / (Weight in kg × Gender Factor) Example: For 3 drinks, 70kg male: (3 × 35000) / (70 × 1.1) ≈ 1364 ng/mL peak EtG
EtG Calculator Examples
See how the calculator works with real-world scenarios
Moderate Drinking Example
Calculate EtG elimination time after moderate alcohol consumption
Calculation steps
Heavy Drinking Example
Calculate EtG elimination time after heavier alcohol consumption
Calculation steps
Understanding Your EtG Calculator Results
Less than 24 hours
Short detection window, typically associated with light drinking (1-2 standard drinks) or significant time since last drink.
24-48 hours
Moderate detection window, common for moderate drinking (3-5 standard drinks) with standard 500 ng/mL testing.
48-80 hours
Extended detection window, typically seen with heavier drinking (6+ standard drinks) or with high-sensitivity 100 ng/mL testing.
80+ hours
Long detection window, usually associated with very heavy drinking and high-sensitivity testing.
Frequently Asked Questions
Common questions about EtG testing and our calculator
Ethyl Glucuronide (EtG) is a direct metabolite of alcohol that remains detectable in urine long after alcohol itself has been eliminated from the body. EtG testing is commonly used in legal, employment, and substance abuse monitoring contexts because it provides a longer detection window than standard alcohol tests.
Our calculator provides realistic estimates based on scientific half-life models, but individual results may vary due to differences in metabolism, hydration levels, overall health, and other factors. The calculator should be used for informational purposes only and not as a substitute for professional advice.
The 500 ng/mL test is the standard cutoff for most EtG testing and has a shorter detection window. The 100 ng/mL test is a high-sensitivity test with a longer detection window, often used in zero-tolerance programs or when enhanced monitoring is required.
While staying well-hydrated may help with general detoxification, there is no proven way to significantly accelerate EtG elimination. The body processes EtG at a relatively fixed rate determined by your metabolism. Drinking excessive water shortly before a test may trigger suspicion of sample dilution.
No, this calculator is specifically designed for urine EtG tests. Hair EtG tests have much longer detection windows (up to 90 days) and operate on different principles than urine testing.
Important Disclaimer
This EtG calculator is provided for informational and educational purposes only. The results are estimates based on general metabolic models and should not be considered as medical or legal advice. Please note:
1. Individual metabolism varies significantly and can affect actual EtG elimination times
2. Hydration levels, overall health, and other factors may influence test results
3. This tool cannot guarantee any specific test outcome
4. Always consult with healthcare or legal professionals regarding important testing matters
5. We do not store any personal information entered into this calculator