Wizard's workshop illustration with glowing hexadecimal UUID runes

Wizard UUID Generator: Conjure Unique IDs in One Click 🪄

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Need a fresh unique ID for a database row, an API key, or a test fixture? The Wizard UUID Generator conjures cryptographically random UUID v4 identifiers right here on the blog — one at a time, or in batches of up to 100. Hit Generate, tap Copy, done. No signup, nothing leaves your browser.

Developers, testers, students, and the incurably curious: this one's for you. Every UUID is unique every time, and the built-in history keeps your last five single-generated IDs handy.

UUID v4 Generator

One click. Fresh, unique IDs — ready to paste anywhere.

Single Generator

Generate one UUID v4 at a time. Every click produces a brand-new, cryptographically random identifier.

Press Generate to create your first UUID

Bulk Generator

Need a batch? Generate up to 100 UUIDs at once, then copy them one by one or all together.

1–100, capped automatically

    What is a UUID v4?

    A UUID v4 is a 128-bit label that looks like 550e8400-e29b-41d4-a716-446655440000. It is generated randomly, so the chance of two being identical is practically zero.

    Developers use them as unique IDs for database records, files, sessions, and devices — anywhere a one-of-a-kind tag is needed.

    The "v4" just means "randomly generated" — every ID on this page is created in your browser, nothing is sent anywhere.

    Recent History

    Your last 5 single-generated UUIDs. Hit the copy button on any of them to reuse it.

      Nothing here yet — generate your first UUID above.

      Copied!

      How to use it

      1. Generate one: hit the big Generate button and tap Copy next to your new UUID.
      2. Generate in bulk: type a count (1–100), hit Generate Batch, and copy any row — or use Copy All to grab the whole list.
      3. Check history: your last five single-generated UUIDs stay listed below for quick reuse.

      3 pro tips

      • UUID v4 = random. Unlike v1 (timestamp-based) or v3/v5 (name-based), v4 identifiers carry no information about you or your machine.
      • Use bulk mode when seeding databases or generating test fixtures — one click beats a loop script for a quick batch.
      • Store IDs as strings, not numbers — UUIDs are 36 characters with hyphens, and databases love them as CHAR(36).

      Free to use, forever. Bookmark it, share it with your study group, and check back — the Wizard's workshop adds a new app every single day.

      Disclaimer: All content provided is for informational and educational purposes only.

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