Prison Professors

Free Tool

Federal Sentence Calculator

We've created a free tool for members of our community to project release dates. This tool prompts our users to enter the sentence length, surrender date, and respond to a few other questions. If your sentence qualifies for credits, our calculator will apply those credits and then offer a projection on your release date.

How It Works

Understanding the Calculation

1

Statutory Good Time (SGT)

For sentences over 12 months, the BOP applies a 15% Good Conduct Time credit. This automatically reduces the time you must serve, assuming satisfactory behavior.

2

RDAP Reduction

The Residential Drug Abuse Program can reduce your sentence by 6 to 12 months depending on your total sentence length. Eligibility is determined by the BOP based on substance abuse history.

3

First Step Act (FSA) Credits

Eligible individuals earn time credits through programming and good behavior. Up to 365 days can be applied toward early release, with additional days potentially qualifying for home confinement.

Need More Help?

Free Resources You Can Use to Prepare for the Best Possible Outcomes

Our free resources can help you understand your sentence, prepare for prison, and plan for a successful future. No consultant fees — ever.