UID / ULID Decoder — ULID, UUID, ObjectId

Decode identifiers into human-readable fields (timestamp, version, randomness). Supports ULID, UUID v1/v4/v7, and MongoDB ObjectId.

Input
Mode
Identifier
Time zone
Type
Canonical
Canonical
Time
Unix ms
ISO (UTC)
Bytes & Encodings
Hex (16 bytes)
Base64
ULID Details
Randomness (80-bit, hex)

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What you can do

  • Detect ID type automatically and decode fields
  • Extract timestamps (ULID, UUID v1/v7, ObjectId)
  • View/export bytes as Hex or Base64
  • Parse many IDs at once in Bulk mode

Notes

  • UUID v1 timestamps are in 100-ns ticks since 1582-10-15.
  • UUID v7 timestamps are Unix milliseconds.
  • ULID timestamps are 48-bit Unix milliseconds.

Frequently Asked Questions (FAQs)

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