Learn How UUIDs Are Structured

See the version, variant, and time fields that make up a UUID.

Tiada log masuk diperlukan

UUID or ULID

💡 Versions 1, 6, and 7 (and ULIDs) embed a creation time, which is decoded above. Versions 4 are fully random and carry no timestamp. Everything is parsed in your browser.

learning tips

🎓

Try the built-in examples to see how each UUID version differs in structure.

🧩

The breakdown shows which bits carry the version, variant, timestamp, and node.

📚

A practical way to understand RFC 4122 / RFC 9562 without reading the spec.

🔒

No data is uploaded — experiment freely.

Cara ia berfungsi

Masukkan

Enter your data into the tool above. Everything stays local to your browser.

Proses

The tool processes your data instantly in your browser using JavaScript. No server, no waiting.

Muat turun

Get your result instantly. Nothing is stored after you leave the page — complete privacy.

Mengapa alat kami?

✓Percuma sepenuhnya — tiada kos tersembunyi, selama-lamanya

✓Tiada akaun, e-mel atau log masuk diperlukan

✓Fail tidak pernah meninggalkan peranti anda

✓Tiada had saiz fail langsung

✓Tiada tera air pada sebarang output

Also check out…

🏷️

Check a UUID Version

Find out whether a UUID is v1, v4, v7, or another

🕒

Extract the Timestamp from a UUIDv7

Decode the creation time embedded in a sortable UU

🆔

Decode a ULID

Read the timestamp and randomness from a ULID.

🐞

Debug IDs in Logs and Databases

Quickly understand an unfamiliar identifier you fo

Soalan lazim

Back to UUID Inspector