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How to Find Someone in Federal Prison

Complete guide to searching the Bureau of Prisons (BOP) inmate locator, understanding federal release dates, First Step Act credits, RDAP eligibility, and getting a written projection of when your loved one comes home. Updated July 2026.

Quick answer: To find a federal inmate, go to the Bureau of Prisons inmate locator at bop.gov/inmateloc and search by name or BOP register number. The free search shows current facility and projected release date — but that date does not include First Step Act credits or RDAP reduction. The real release date is often months or years earlier.

Step-by-Step: Free Federal Inmate Search

  1. Go to the official BOP inmate locator at bop.gov/inmateloc. This is the only accurate source — third-party sites pull from here but are often outdated.
  2. Search by name or register number. The BOP register number is formatted XXXXX-XXX and appears on any court or sentencing document. Name-only searches work fine.
  3. Confirm the record. Match by age, race, sex, or facility to rule out name collisions. Note the facility name, unit, and the projected release date shown.
  4. Understand what that date means. The BOP release date shown is the statutory release date — it does NOT account for First Step Act Earned Time Credits, RDAP completion, or halfway house / home confinement time. The real "home" date can be significantly earlier.
  5. Want the real number? Order a $27 Sentence Report and we calculate the actual projected release date with all credits applied — delivered to your email within 24 hours.

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We pull the BOP record and calculate the real release date including First Step Act credits, RDAP reduction, good conduct time, and the halfway house placement window. Clean PDF. Delivered within 24 hours.

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Why Federal Release Dates Are Complicated

The BOP lists one date. The real "home" date depends on up to five separate calculations stacked on top of each other. Most families never know the difference — and as a result, they miss months or years of time their loved one could have been home.

Good Conduct Time (GCT) Federal inmates can earn up to 54 days per year off their sentence for good behavior. The BOP calculates this automatically — but errors happen.
First Step Act (FSA) Credits Eligible inmates earn Earned Time Credits (ETCs) through approved programs and work. Credits can move up release or transfer to home confinement early.
RDAP — Up to 12 Months Off Completing the Residential Drug Abuse Program can reduce a federal sentence by up to 12 months. Eligibility depends on offense type and diagnosis.
Halfway House / Home Confinement Most federal inmates transfer to a Residential Reentry Center (RRC) before full release. This window can be 6–12 months — effectively time at home.
Compassionate Release 18 U.S.C. § 3582(c)(1)(A) allows early release for extraordinary circumstances — terminal illness, age, family hardship. Applications must be filed properly.
Amendment 821 / Retroactive Guidelines Recent USSC amendments reduced sentences for zero-point offenders and status points. Many federal inmates qualify for a retroactive reduction.
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Frequently Asked Questions

How do I look up a federal inmate?

Use the official Bureau of Prisons (BOP) inmate locator at bop.gov/inmateloc. Search by first and last name or BOP register number. Results show facility, release date, and sentence information.

What is a BOP register number?

A BOP register number is an 8-digit identifier assigned to every federal inmate, formatted as XXXXX-XXX. It appears on court documents and sentencing orders. You can also search by name alone if you don't have the number.

How does the First Step Act affect federal release dates?

The First Step Act lets eligible federal inmates earn time credits through programming and work assignments. These credits can move up the release date or transfer the person to home confinement earlier than the statutory date. Calculating credits correctly requires knowing the offense, sentence length, and program participation — our $27 report does this.

What is RDAP and how does it reduce a federal sentence?

RDAP is a 9-month residential program for inmates with a substance use disorder diagnosis. Eligible inmates who complete it can earn up to 12 months off their sentence. Eligibility depends on the offense type — our $27 Sentence Report identifies whether your loved one qualifies.

Can I get a projected federal release date with all credits applied?

Yes. Our $27 Sentence Report pulls the publicly available BOP record and calculates the real projected release date including FSA Earned Time Credits, RDAP eligibility, good conduct time, and the halfway house / home confinement window — delivered to your email within 24 hours.

Is the BOP inmate locator free?

Yes, the official BOP search is free and public. Our service adds value by compiling the record into a clean, shareable PDF with the actual release-date math applied — not just the statutory date the BOP shows.

Disclaimer: InmateResearch by 1SitePRo LLC provides Data Research & Analytics services only. We are not a law firm and do not provide legal advice. All information is compiled from publicly available records. Official federal inmate lookup is free through the Bureau of Prisons at bop.gov.