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UUID Generator

Generate random UUID v4 or time-based UUID v1 identifiers instantly, one at a time or in bulk. Everything runs locally in your browser for complete privacy.

Choose between 1 and 50 UUIDs per batch.

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About the UUID Generator

This UUID generator online tool creates universally unique identifiers using your browser's built-in random UUID v4 support, with a UUID v1 time-based option available as well. A UUID, sometimes called a GUID, is a 128-bit value written as 32 hexadecimal digits in five hyphen-separated groups, and it is used across databases, APIs, and distributed systems to identify records without central coordination.

Because generation happens entirely on your device, this bulk UUID generator can produce up to 50 identifiers per batch instantly, with no rate limits, accounts, or server round trips. Copy an individual value, copy the whole list, or download it as a text file for use in scripts, seed data, or configuration files.

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How to Use

  1. Choose UUID v4 for random identifiers or UUID v1 for time-based ones.
  2. Set how many UUIDs you need, from 1 up to 50, in the quantity field.
  3. Click Generate to create a fresh batch of identifiers.
  4. Use Copy All or Download to save the full list.

Why Use This Tool

Cryptographically Strong Randomness

Uses the browser's native crypto.randomUUID API when available, matching the output of standard server-side UUID libraries.

Instant Bulk Generation

Generate up to 50 identifiers in one click, then copy or export them all as a single text file for seed data or fixtures.

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Who Should Use This

  • Backend developers generating primary keys that avoid enumeration and merge cleanly across databases.
  • API developers creating unique tokens, request IDs, or idempotency keys for service calls.
  • QA engineers producing bulk test fixtures with guaranteed unique identifiers.
  • DevOps engineers naming cloud resources, containers, and log correlation IDs.

Privacy First

Every UUID is generated locally using your browser's random number source. No identifier, quantity, or version choice is ever transmitted to a server, so this generator is safe to use for production keys and confidential system identifiers alike.

Open this UUID generator online, keep the version set to v4, and a random identifier is created instantly with no signup required. Each UUID v4 uses 122 bits of randomness, so it is suitable for database keys, session tokens, and public-facing identifiers.
Yes, this tool is a completely free bulk UUID generator that can create up to 50 identifiers in a single click. Set the quantity field to however many you need, then copy or download the full list as a newline-separated text file.
A UUID and a GUID are the same 128-bit identifier format, just named differently by different vendors and standards bodies. Microsoft platforms typically call it a GUID while most other systems and RFC 4122 documentation refer to it as a UUID.
UUID v4 values are not mathematically guaranteed unique, but a collision is astronomically unlikely in practice. With 122 random bits, you would need to generate roughly a billion UUIDs per second for about a hundred years before a 50 percent chance of one collision.
Yes, this generator uses your browser's cryptographically secure random number source wherever available, matching the output produced by standard UUID libraries. Because everything runs client-side, it is safe to generate identifiers for real database records, API keys, or test fixtures.