UUID Generator

Create universally unique identifiers for databases, sessions and records. Generate one UUID or hundreds at once.

UUIDs are generated locally in your browser using a secure random source.

How to use UUID Generator

  1. Choose how many UUIDs you need.
  2. Optionally switch to uppercase or remove hyphens.
  3. Press “Generate”.
  4. Copy the IDs or download them as a file.

About this tool

UUID v4 is the standard way to create unique identifiers without a central authority. The generator uses your browser’s cryptographically secure random number generator, so every ID is effectively unique.

When to use it: IDs for records, sessions, test data and distributed systems.

Frequently asked questions

Can two generated UUIDs collide?
In practice, no. UUID v4 has 122 random bits, so the chance of a collision is astronomically small — even across billions of IDs.
Why would I remove the hyphens?
Some systems store UUIDs without hyphens or in uppercase. The options let you match whatever format your database expects.
What is the difference between UUID v4 and v1?
v4 is purely random; v1 mixes in the time and a hardware address. v4 reveals nothing about your machine, which is why it is the common default.
Are generated UUIDs sortable by time?
No — v4 IDs are random, not sequential. If you need time-ordered IDs, look at ULIDs or timestamp-based schemes instead.
Can I use UUIDs as database keys?
Yes — they are the standard choice when many machines must create keys without coordinating, because collisions are practically impossible.
Can I generate a whole batch at once?
Yes — choose the count and copy or download the full list in one step.

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How to use Uuid Generator

Open the Uuid Generator tool from the workspace. Depending on the tool, provide the required input — for example, upload a file, paste text, enter values, or select options. Once input is ready, click the action button to process. The result appears instantly and can be downloaded or copied.

Practical benefits

Frequently asked questions

Is this tool free to use?
Yes. Uuid Generator is fully free with no account or subscription required.
Does it upload my files?
No. All processing occurs locally within your browser session.
Can I use this for professional projects?
Yes, the tool is designed for both casual and professional use. Always verify critical outputs.