Development

Batch UUID Generator

Generate several random v4 UUIDs at once with a single click.

How to use

  1. 1Enter the number of UUIDs.
  2. 2Click Generate.
  3. 3Copy the generated list.

About

Generates several UUID v4s at once, ideal for populating databases and creating test data quickly.

How to generate many UUIDs in batch

Batch UUID generation creates dozens or hundreds of unique identifiers at once, ready to populate tables, database seeds, and tests. The UtilNexo tool returns as many as you request, one per line.

Instead of clicking the single generator multiple times, you set how many UUIDs you need (for example, 50 or 500) and the tool generates them all instantly. Each identifier is a random v4 UUID, independent of the others.

The output is formatted one UUID per line, which makes it easy to paste directly into CSV files, SQL scripts, or data lists. You can also choose between the hyphenated and the hyphen-free format.

It is especially useful for developers who need many identifiers for load testing, mock data creation, or migrations. All processing happens locally, without sending anything to servers.

Examples

  • Generate 5 UUIDs → a list of five lines, each with a distinct v4 UUID.
  • Generate 100 UUIDs without hyphens → one hundred 32-character identifiers, ready to import.

Limitations

  • Generating a very large quantity (thousands) can take a few seconds and consume memory, since all identifiers are built at once.
  • Because each UUID is random, the list has no time ordering; if you need creation order, consider v7 UUIDs.

How to use the batch UUID generator

  1. 1Set the desired quantity.
  2. 2Choose the format (with or without hyphens).
  3. 3Click Generate and copy the list.

Frequently asked questions

How many UUIDs can I generate at once?

It depends on the tool, but typically dozens or hundreds are generated instantly. Very large quantities may take a few seconds.

Is there a risk of repetition in the batch?

Practically not. Each v4 UUID is generated independently and the collision chance is negligible.

What is batch generation for?

For populating tables, creating seeds, testing APIs and systems with large data volumes without generating one by one.

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