Calculators
One engine, every angle on the release date.
The same statute-accurate engine, focused on the question you're actually asking — good time, First Step Act credits, RDAP, or the halfway-house window. Free, instant, nothing stored.
Federal prison release date calculator
Free federal release date calculator: enter the sentence, custody date, and jail credit to see the full date ladder — Good Conduct Time, First Step Act credits, halfway house, and RDAP — with every assumption cited.
Open calculator →Good conduct time calculator (54 days a year)
Free 54-days-a-year good time calculator for federal sentences: exact GCT under 18 U.S.C. § 3624(b) as amended by the First Step Act, including partial-year proration — plus the projected release date.
Open calculator →First Step Act time credits calculator
Free FSA earned time credits calculator: models the 10- and 15-day earning rates, the two-assessment enhancement, the 365-day supervised-release cap, and prerelease custody — month by month, with citations.
Open calculator →RDAP time off calculator
Free RDAP calculator: up to 6, 9, or 12 months off under 18 U.S.C. § 3621(e) depending on sentence length, stacked with Good Conduct Time and First Step Act credits the way BOP applies them.
Open calculator →Halfway house date calculator
Free halfway house (RRC) date calculator: the Second Chance Act 12-month window under 18 U.S.C. § 3624(c), FSA-credit placement under § 3624(g), and a realistic bed-space adjustment by region.
Open calculator →