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UUID Generator

Generate UUID v1, v4, v7, GUID, nil, and max IDs in the browser. Format with hyphens, braces, or URN, export lists as text or JSON, and decode any UUID — nothing is uploaded.

PrivateIn your browserInstantUnlimited

v4 is random. v7 is time-ordered for databases. v1 uses a random node (not your MAC). Nil is all zeros; Max is all Fs.

Accepts hyphens, braces, and URN prefixes.

0 IDs

How it works

1

Pick a version

Choose v4 (random), v7 (time-ordered), v1, GUID formatting, nil, or max. Set count and output format.

2

Generate and export

Create IDs in this tab. Copy the list or download as text or JSON. Formatting includes hyphens, braces, and URN.

3

Decode when needed

Paste any UUID to validate it and inspect version, variant, and embedded timestamps for v1 and v7.

What is UUID Generator?

Create and format UUIDs and GUIDs entirely in your browser, export bulk lists, and decode version and timestamp details without uploading data.

Why use this tool

  • UUID v1, v4, v7, GUID, nil, and max generation
  • Bulk lists with newline, comma, or JSON export
  • Built-in decoder for version, variant, and timestamps
  • Runs locally — unlimited on the free plan

Questions

v4 or v7?

v4 is fully random and the usual default. v7 embeds a Unix millisecond timestamp so IDs sort by time — useful for database primary keys.

Does v1 leak my MAC address?

No. This tool uses a random node with the multicast bit set, not your hardware address.

What are nil and max?

Nil is the all-zero UUID. Max is all F characters. Both are defined in RFC 9562 for special cases and tests.

Can I decode a UUID?

Yes. Paste it into Decode. For v1 and v7 the embedded timestamp is shown when present.

Is there a daily limit?

No. Generation is unlimited and stays in your browser.

Do I need an account?

No. Open the tool and use it. An account is only for Pro later.

If Easy24 helped, buy a coffee

Tools stay free in your browser. One-time thanks via Kreosus. Turkish cards work.

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