The Problem
A single miscalculation can cost freedom—and millions in taxpayer dollars.
Even a single miscalculation can keep someone in jail days — or even years — longer than the law allows.
Across New York and beyond, outdated manual systems, human error, and inconsistent statutory interpretation cause widespread injustice and financial waste.
In one month alone, The Legal Aid Society used Sentence Calculator to correct 341 days of unnecessary incarceration, saving taxpayers more than $223,000
The Solution
Sentence Calculator is a secure, web-based system that automates the complex process of statutory sentence computation.
Using verified legal formulas and statutory frameworks, the platform eliminates the guesswork—providing precise release dates, good time credits, and predicate status determinations in seconds.
Developed and patent-pending by Terence Davidson, the software has been validated through years of use in New York’s correctional and legal systems.
Sentencing Accuracy
Automated calculations that eliminate human error and ensure every sentence complies with state law.
Release Date Computation
Instant, reliable results that determine lawful release dates using verified statutory formulas.
Case Review Support
Trusted by attorneys, corrections staff, and advocates to clarify complex sentencing situations.
System Compliance
Continuously updated to reflect current laws and sentencing guidelines for total transparency.
Proven Impact
1,000+
Sentences Corrected and Verified
$10M+
Public Cost Savings
to Date
50+
Legal and Corrections Partners Served
45+ Years
Combined Legal and Systems Expertise
Validated Performance Metrics
01 Prevents Wrongful Incarceration
Reduces over-detention and ensures every sentence complies precisely with state law.
02 Saves Taxpayer Dollars
Prevents costly incarceration overruns, saving agencies thousands each month in avoidable detention costs.
03 Improves System Efficiency
Automates manual calculations, reducing administrative workload for courts and corrections personnel.
04 Restores Sentencing Integrity
Provides transparent, audit-ready computations that build trust across the justice system.
Key Features
Statutory Accuracy
Applies every relevant section of Penal Law, Correction Law, and Executive Law.
Multiple Jurisdictions
Handles local, state, and federal sentencing categories.
Interactive Calculators
Navigate through determinate, indeterminate, and concurrent/consecutive sentence modules.
Secure Recordkeeping
Option to save, print, and audit calculations with statutory references.
Built-In Error Detection
Flags data inconsistencies or missing statutory fields.
User-Friendly Interface:
Designed for attorneys, judges, corrections staff, and policy professionals.
Technical Overview
System Design and Methodology
01
Jail Time Credits
Accurately applies time served and pre-sentence detention credits in accordance with Penal Law §70.30.
02
Good Time & Merit Credits
Calculates eligibility and reductions per Correction Law §803 and related statutes.
03
Predicate & Persistent Felony Calculations
Integrates statutory logic for prior felony status to ensure lawful sentence enhancement or mitigation.
04
Rockefeller Drug Law Resentencing
Determines eligibility and adjusted sentencing terms under reform provisions.
05
Post-Release Supervision Violator Computations
Automates DOCCS-based revocation and re-entry calculations for consistent results statewide.
Testimonials
Real voices from across New York’s justice community reflecting the measurable impact of Sentence Calculator.
"Terry Davidson has long been known to our office as the ‘Sentencing Guru.’ His depth of knowledge and precision in calculating sentences have made Sentence Calculator an indispensable tool for our attorneys. It brings order, accuracy, and clarity to one of the most complicated areas of criminal law."
– Vanessa Burdick, Esq.
Administrator Assigned Counsel Plan
City of New York
"Terry Davidson knows more about New York sentencing laws than anyone I’ve ever met. Beyond being the expert on sentencing, he’s kind, patient, and always willing to help. Terry has assisted me and my clients many times over the years, and his guidance has made an enormous difference in achieving fair outcomes."
– Lauren Katzman
Staff Attorney
DVSJA
"As both a law professor and a practicing attorney, I can say from firsthand experience that Sentence Calculator is a fantastic tool. Its precision and reliability are a direct reflection of Terence Davidson’s depth of knowledge and mastery of sentencing law. I would trust his calculations any day."
– Anna G. Cominsky
Professor of Law and Director, Criminal Defense Clinic
New York Law School
"New York’s sentencing laws are among the most complex in the country. Sentence Calculator is the only tool I know of that handles this work with complete accuracy. I’ve used it countless times, and it has never failed to deliver precise, reliable results. Terence Davidson is a master of sentencing—knowledgeable, patient, and deeply committed to justice."
– V. Marika Meis
Supervisor, Trial Court Litigation
Center for Appellate Litigation
Working in a field that requires constant adjustment and verification of jail time credit for clients, Terry has consistently demonstrated deep expertise and reliability. For years, Terry has been a knowledgeable and trusted source of information, providing accurate guidance and support in this complex area. His dedication and insight have made a meaningful impact on our work and the clients we serve.
– Diego Gerardi
Director
The Legal Aid Society
"Terry Davidson is the person to call when you need help navigating New York’s complex sentencing laws. He has prevented countless miscarriages of justice by helping attorneys determine what sentences are actually lawful. His Sentence Calculator tool is an essential part of my practice and an invaluable resource for anyone working in criminal defense. Highly recommended."
– Michelle Fox
Legal Resource Attorney
Criminal Defense Practice
Our Partners & Clients
