Decode UUID v7 Timestamp Online
UUID v7 (RFC 9562) stores a 48-bit Unix timestamp in milliseconds in its most-significant bits, making it both unique and time-sortable. Bit positions 0–47 form the unix_ts_ms field — a standard millisecond-precision Unix epoch value you can convert directly to a date and time.
This tool decodes that timestamp without any server round-trip. Paste a UUID v7 and you instantly see the ISO 8601 date, the raw Unix millisecond value, and the remaining random fields (rand_a and rand_b) that guarantee uniqueness within the same millisecond.
Common use cases: debugging when a record was created from its primary key, verifying generation timestamps on distributed systems, auditing ID sequencing in database migrations.
How to use
- Paste one or more UUID strings into the main tool — version is auto-detected.
- Hover any cell in the 128-bit bitfield diagram to see the field name, bit index, and full field value.
- For batch UUIDs, check the monotonic-order badge and timestamp timeline to verify generation order.