What is a valid SAM.gov Unique Entity ID (UEI)?

The Unique Entity ID (UEI) is a 12-character alphanumeric identifier assigned by SAM.gov (the U.S. General Services Administration) to identify entities doing business with the federal government. It uses Crockford's Base32 character set, excluding the letters I and O to prevent visual confusion.

How do I verify a Unique Entity ID format?

A valid GSA UEI must be exactly 12 characters, and it consists of letters and numbers. It uses a checksum scheme where the final character serves as a check digit to validate the preceding 11 characters under GSA's specification.

UEI Checker & SAM.gov ID Format Validator

Verify entity identifier formats, structure, and check digits. Run offline checksum algorithms and query active registration details.

Unique Entity ID (UEI) Validator

A 12-character alphanumeric identifier generated by SAM.gov for federal contractors. It uses Crockford's Base32 character set, excluding the letters 'I' and 'O'.

Enter 12-character SAM.gov UEI:

UEI Checker & SAM.gov ID Format Validator

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