ETG Calculator
Enter your drinking details to estimate ETG level and detection time.
For educational purposes only. Individual metabolism varies — this is an estimate, not a lab result.
Detection estimate
EstimateETG Detection Time Chart
| Metric | Estimate |
|---|---|
| Starting ETG | 62 ng/mL |
| Detection hours | 30 hrs |
| Below cutoff in | Already below cutoff |
ETG Calculator Online — Free ETG Urine Test Calculator
Estimate your ETG (Ethyl Glucuronide) levels in urine and understand your alcohol detection window with our free online ETG Calculator. Designed for educational purposes, this tool helps you estimate ETG levels based on the number of drinks, drink size, body weight, gender, and hours since your last drink.
Whether you are monitoring sobriety, planning alcohol abstinence, or preparing for a urine alcohol test, this calculator provides an informative estimate of your current ETG concentration.
How the ETG calculator works
The calculator estimates urine ETG concentration from your drinking details, then models how that level falls over time.
Converts your drinks into total grams of alcohol consumed.
Models average alcohol absorption based on body weight and gender.
Applies a standard elimination rate to project ETG decline over time.
Compares your level against common cutoff thresholds (100, 200, 500 ng/mL).
Standard drink reference
Not sure what “drink size” to enter? Here’s roughly how much pure alcohol common drinks contain.
Detection window by drinking level
Approximate detection windows at each cutoff level, based on typical drinking patterns.
Factors affecting ETG levels
These influence how accurate any estimate — including this one — will be for you personally.
- Amount and frequency of alcohol consumption
- Body weight and gender
- Hydration levels and fluid intake
- Metabolism and liver function
- Type of alcoholic drinks consumed
- Individual differences in ETG half-life
Why use our ETG calculator
Our free ETG urine test calculator is designed for practical and educational use.
- Estimate your ETG levels before testing
- Understand detection windows for different drinking patterns
- Monitor sobriety or plan abstinence periods
- Gain insights into how alcohol is metabolized and cleared
By using this tool, you get a realistic view of your urine ETG levels without relying solely on lab testing.
ETG elimination timeline
A typical example of how ETG concentration falls over roughly 80 hours after drinking, relative to common cutoff levels.
ETG vs PEth testing
Both detect alcohol, but over very different windows.
ETG (Ethyl Glucuronide)
Detects recent alcohol consumption in urine, typically up to 3–5 days after drinking.
PEth (Phosphatidylethanol)
Detects longer-term alcohol consumption in blood, typically up to 2–4 weeks. Try our PEth Calculator.
How to calculate ETG levels
Calculating ETG levels involves a few simple inputs:
Entering the number of drinks consumed.
Selecting drink size (standard is 14 g alcohol).
Adding body weight and gender.
Entering hours since your last drink.
The calculator then generates an estimated ETG concentration, elimination timeline, and detection probability.
Related calculators
Looking at the bigger picture? These tools cover related detection windows.
FAQ
It depends on the number of drinks, your metabolism, and the cutoff used. Light drinking may test negative by then, while heavier drinking may still be above the threshold.
An ETG test measures ethyl glucuronide, a byproduct your body produces after metabolizing alcohol, in a urine sample.
It provides a rough estimate based on typical elimination rates. Actual results depend on individual metabolism and cannot be guaranteed.
Common cutoffs are 100, 200, and 500 ng/mL, with lower cutoffs used for stricter monitoring programs.
Yes — certain hygiene products, foods, and medications containing alcohol can occasionally cause a false positive at low cutoffs.
Disclaimer
This ETG Calculator is for educational purposes only. Individual metabolism varies, and laboratory confirmation is required for medical, legal, or probation decisions. Do not use this tool for legal actions without professional guidance.