Ready to see realistic EtG timing?
Enter your drinks, last drink time, weight, biological sex, and the urine test cutoff (100 ng/mL or 500 ng/mL).
- Toggle between standard and high-sensitivity tests with the cutoff selector.
- Use the chart preview to understand when each cutoff line is crossed.
- Revisit inputs anytime with the Reset button for new scenarios.
Interpret Your EtG Calculator Results
Under 18 Hours
The EtG calculator suggests low residual levels, yet hydration and retesting remain prudent.
18 to 36 Hours
Expect moderate risk; the EtG calculator recommends additional time before high-stakes screenings.
36 to 60 Hours
Extended detection is likely, so follow the EtG calculator guidance and adjust plans conservatively.
60+ Hours
The EtG calculator indicates clearance for most thresholds, though individual metabolism may extend detection.
Understand the EtG Calculator
Why a realistic EtG calculator matters for alcohol screening
EtG Calculator Case Studies
See the EtG calculator applied to real-world drinking scenarios
Weekend Social Drinker
Moderate intake with a standard testing threshold
Calculation Steps
- Standard Drinks: 3 craft beers
- Last Drink: 9 hours ago
- Body Weight: 82 kg
- Biological Sex: Male
- Chosen Cutoff: 500 ng/mL
High-Sensitivity Compliance Check
Intense monitoring with a 100 ng/mL target
Calculation Steps
- Standard Drinks: 7 mixed drinks
- Last Drink: 22 hours ago
- Body Weight: 64 kg
- Biological Sex: Female
- Chosen Cutoff: 100 ng/mL
Frequent Use Recovery Plan
Planning sobriety milestones for rehab compliance
Calculation Steps
- Standard Drinks: 10 shots
- Last Drink: 30 hours ago
- Body Weight: 90 kg
- Biological Sex: Male
- Chosen Cutoff: 100 ng/mL
How to Use the EtG Calculator
Complete an accurate EtG calculator run in four focused steps
Record Your Drinks
Enter the total standard drinks consumed so the EtG calculator can estimate peak concentration.
Set the Last Drink Time
Select the exact date and time you finished drinking to align the EtG calculator timeline.
Add Body Metrics
Provide weight and biological sex so the EtG calculator adjusts the distribution volume.
Choose Test Cutoff
Pick 500 ng/mL or 100 ng/mL to see when the EtG calculator projects a pass for your specific screening.
Why Choose This EtG Calculator
Evidence-backed reasons users rely on our EtG calculator
Science-Grounded Modeling
The EtG calculator follows first-order elimination kinetics to reflect how EtG decays in real-world testing laboratories.
Dual Cutoff Guidance
Compare realistic EtG calculator timelines for both 500 ng/mL and 100 ng/mL urine thresholds in a single view.
Interactive Visualization
Chart outputs from the EtG calculator show when each cutoff line is crossed, supporting confident decision-making.
Privacy by Default
The EtG calculator runs fully client-side, storing nothing so your sensitive planning remains yours alone.
Mobile Optimized
Responsive layouts ensure the EtG calculator stays legible and scroll-friendly on any device.
Supportive Resources
Internal links guide you to EtG detection charts, standard drink guides, and help resources for deeper context.
EtG Calculator Input Details
Every parameter the EtG calculator uses to model detection windows
Standard Drinks
Total count of standard alcohol servings powering the EtG calculator peak calculation.
Last Drink Time
The timestamp anchoring the EtG calculator elimination curve.
Body Weight
Weight informs distribution volume within the EtG calculator model.
Biological Sex
Sex-specific factors refine how the EtG calculator estimates peak concentration.
Test Cutoff Level
The urine threshold the EtG calculator evaluates against for clearance timing.
Formulas Driving the EtG Calculator
Key equations and assumptions behind each EtG calculator result
Half-Life Decay
The EtG calculator applies first-order kinetics with a five-hour reference half-life to project decreasing concentrations.
C(t) = C₀ × (0.5)^(t / T₁/₂)
Example: With C₀ = 1200 ng/mL, the EtG calculator predicts ≈300 ng/mL after 10 hours.
Peak Estimation
GenderFactor equals 1.1 for males and 1.3 for females, allowing the EtG calculator to reflect body composition.
C₀ = (Drinks × 35000) / (Weight_kg × GenderFactor)
Example: For 5 drinks at 68 kg female, the EtG calculator estimates ≈1990 ng/mL peak.
Time to Target
Solving for t lets the EtG calculator pinpoint when EtG concentrations fall below chosen cutoffs.
t = T₁/₂ × log(C_target / C₀) / log(0.5)
Example: If C₀ = 1500 ng/mL, the EtG calculator shows ≈34 hours to reach 100 ng/mL.
EtG Calculator FAQs
Key answers for confident EtG calculator planning
The EtG calculator combines peer-reviewed half-life data with your personal inputs. Accuracy depends on honest entries, hydration, liver health, and lab sensitivity, so treat projections as informed estimates rather than guarantees.
The EtG calculator provides timing guidance, but only a laboratory test confirms a pass. Use the projections to schedule responsibly and reduce risk.
These thresholds cover most probation, workplace, and treatment EtG programs. The EtG calculator lets you visualize both to stay prepared.
No. Every EtG calculator run stays on your device, and no identifying data is transmitted or saved.
Metabolic variance is real. Use the EtG calculator baseline, then add buffer hours or re-run scenarios with adjusted drink counts to reflect your experience.
This EtG calculator focuses on urine detection. Hair and blood tests follow different kinetics, so consult specialized resources for those modalities.
Important Disclaimer
- 1. The EtG calculator cannot guarantee a pass or predict unique lab conditions
- 2. Hydration, liver function, medications, and illness may extend EtG detection
- 3. Always consult healthcare or legal professionals when test outcomes carry consequences
- 4. For addiction or relapse concerns, use the provided help resources immediately
- 5. We never store EtG calculator inputs; refresh the page to clear the session