For case review
Model consumption timelines, absorption delays, elimination ranges, and retrograde extrapolation questions before deciding what needs expert review.
Professional BAC Analysis Software
DUI Professional BAC Simulation Software
3,041 drink profiles | 30,771 simulations performed | BAC simulation, retrograde extrapolation, and litigation-support reports
DUI Professional | Litigation-Support Blood Alcohol Analysis
DUI Professional is a web-based alcohol analysis platform for professional BAC simulation, retrograde extrapolation review, and drinking-pattern analysis. It helps attorneys, public defenders, forensic toxicologists, expert witnesses, law enforcement trainers, and legal education users visualize alcohol absorption and elimination over time with documented assumptions.
What is DUI Professional?
DUI Professional is BAC simulation software for modeling alcohol consumption timelines, expected BAC ranges, retrograde extrapolation scenarios, and professional reports.
How can DUI attorneys use BAC simulation?
DUI attorneys can compare a measured BAC with the alleged driving time, test drinking-pattern assumptions, identify rising-BAC questions, and prepare focused expert-review issues.
Who uses DUI Professional?
Users include DUI and criminal-defense attorneys, public defenders, forensic toxicologists, expert witnesses, law enforcement trainers, forensic laboratories, and CLE instructors.
Public Drink Database
Search reference drink profiles before you build a BAC simulation.
DUI Professional includes a searchable drink database organized by type, subtype, ABV, and reference serving volume. Open individual drink profiles for BAC workflow context, downloadable reference PDFs, and simulator-ready values.
3,041
total drink profiles
1,092
public active profiles
PDF
profile previews and exports
Subscriber Workflow
Move from alcohol timeline questions to documented BAC analysis.
DUI Professional is built for recurring professional use: reviewing client drinking histories, testing alternative drink timing, comparing measured BAC values with alleged driving times, and preparing report output that preserves the assumptions used in the analysis. Subscription access is designed for attorneys, public defenders, forensic toxicologists, expert witnesses, laboratories, trainers, and CLE presenters who need more than a one-off calculator.
For reporting
Save simulations, revisit assumptions, and generate PDF outputs that document drink profiles, subject variables, BAC ranges, and key timeline points.
For training
Use repeatable scenarios to explain alcohol dose, rising BAC, drink-size assumptions, and timing issues to attorneys, investigators, students, and trainees.
Recent simulator updates
Model comparisons, assumption tracking, and report annotations.
The current test/beta simulator adds optional BAC models, per-drink Timing Model controls, and richer report metadata while preserving the standard Widmark workflow as the default.
Test/Beta
Multi-model BAC calculations
Compare Standard Widmark with OSAC range, Watson total body water, delayed absorption, and advanced research scenarios when the facts justify it.
Charting
Overlay selected models
Show optional model curves beside the default BAC range so peak timing, keypoint values, and assumption-sensitive differences are easier to review.
Granular timing
Per-drink distribution control
Model front-loaded, back-loaded, stacked, or overlapping drinking patterns with per-drink start times, consumption lengths, zoom, and auto-distribution.
Reports
BAC Model Annotation Appendix
PDF reports can enumerate applied models, assumptions, warnings, keypoint values, and literature basis without presenting modeled BAC as a measurement.
Assumptions
Subject and evidence inputs
Capture age, height, sex/body-water basis, calculated BMI, optional body-fat TBW override, and post-absorptive evidence for clearer model disclosures.
DUI Professional Subscriptions
Register first, then choose a subscription from your account. Subscriber access unlocks the full professional BAC simulation workflow for alcohol absorption, elimination, retrograde extrapolation review, saved simulations, and report generation.
Evaluation
Explore the technology and evaluate the workflow.
Free
/ forever
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Full Drink Database
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Generate sample PDF reports
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Subject parameters are restricted
Popular
Register to Subscribe
Annual
Save nearly $400/year over monthly.
$199.99
/ year
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Unlimited reports
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Email support
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Unrestricted simulation parameters
Monthly
Try now and cancel anytime.
$49.99
/ month
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Unlimited reports
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Email support
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Unrestricted simulation parameters
Choose the BAC simulation plan that fits your workflow
Start with registration, then subscribe from your account when you are ready for saved simulations, full parameters, and professional report output.
Subscriber Questions
What subscribers get after registration
Do I need to register before subscribing?
Yes. Registration creates the DUI Professional account that holds saved simulations, subscription status, and report workflow access. After registration, subscription selection happens from the account area.
What does a paid subscription unlock?
Paid access is intended for unrestricted professional workflow use, including saved simulations, full subject and drink parameters, BAC range modeling, and PDF report output for case review, expert consultation, or training.
Who is the annual plan for?
The annual plan is positioned for recurring DUI, criminal-defense, forensic toxicology, expert-witness, laboratory, and legal-education workflows where BAC simulations and reports are used repeatedly during the year.
Can I evaluate the system first?
Yes. The evaluation account lets professional users inspect the workflow before choosing a subscription. Some simulation parameters are restricted until the account has subscriber access.
Granular Simulator Controls
DUI Professional now supports more detailed BAC simulation review without changing the default Widmark workflow. Users can enable per-drink distribution timing, compare optional BAC models, preserve subject and evidence assumptions, and generate report appendices that show the model basis used in the calculation.
Per-drink timing
Each drink can have its own modeled start time and consumption length, allowing front-loaded, back-loaded, stacked, or overlapping drinking patterns.
Model comparison
Optional OSAC range, Watson total body water, delayed absorption, and research models can be compared against the standard Widmark output when selected.
Transparent reports
PDF reports can include drink timing visuals, model annotations, assumptions, warnings, literature basis, and input audits for professional review.
DUI Pro Applications
The DUI Professional (DUI Pro) simulation system supports professional BAC analysis across several contexts. In law enforcement training, it can be used for training scenarios and alcohol-timeline education. For alcohol education and counseling, it helps explain drinking-pattern risk and the timing of alcohol absorption and elimination. In workplace safety, it supports education and policy discussions. Within civil litigation, it helps organize alcohol-related timeline assumptions for professional review. In aviation safety, it can be used to demonstrate bottle-to-throttle timing and BAC concepts for safety training.
Evaluate DUI Professional for your BAC workflow
Register for an evaluation account, review subscription options, and test the simulation workflow with attorney, expert witness, or training scenarios.
Licensees of DUI Pro
DUI Professional has supported alcohol education, safety training, legal analysis, and forensic review across legal, academic, government, and professional settings. The organizations shown below are listed as DUI Pro licensees or historical users in the product materials.
© 1998-2026, Hopen Corporation. DUI PRO is a federally registered trademark.