Privacy-First & Secure Processing
100% Secure Processing: This tool operates entirely within your web browser (client-side). No data, inputs, or files are uploaded to external servers. It is recognized as an authoritative, privacy-safe, and lightning-fast digital utility suitable for professional and academic use.
A UUID (Universally Unique Identifier) is a 128-bit identifier, usually written as 32 hexadecimal digits in the form xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx, used by developers to uniquely identify records, sessions, or objects without a central authority assigning the numbers. This tool generates version 4 (random) UUIDs, the most commonly used type.
How to Use This Tool
- Click "Generate" to create a new random UUID.
- Use the bulk option to generate multiple UUIDs at once if you need several.
- Click copy to copy a single UUID, or copy all to grab the full list.
- Paste the UUID into your database, code, or configuration file.
Why Use This Tool?
Generated UUIDs follow the RFC 4122 version 4 standard, so they're valid for use in databases, APIs, and codebases exactly like UUIDs generated by programming libraries — with the added convenience of generating them instantly from any device without writing code.
Frequently Asked Questions
1. What is a UUID used for?
UUIDs are commonly used as unique database primary keys, session identifiers, or object IDs in software systems where you need a value that's virtually guaranteed not to collide with any other.
2. Is a UUID the same as a GUID?
Yes, GUID (Globally Unique Identifier) is Microsoft's name for the same concept — the formats are compatible.
3. How random is a v4 UUID?
A version 4 UUID has 122 random bits, giving roughly 5.3×10^36 possible values — the chance of a collision is negligible even generating billions of them.
4. Can I generate more than one UUID at a time?
Yes, use the bulk generation option to create a list of multiple UUIDs at once.
5. Are the UUIDs generated here unique every time?
Yes, each UUID is generated using a random function, so running the generator again produces a completely different value.
6. Is this UUID generator free?
Yes, it's completely free with no limit on how many UUIDs you can generate.
7. Does this tool store the UUIDs I generate?
No, UUIDs are generated locally in your browser and are not logged or stored anywhere.
8. What UUID version does this tool generate?
This tool generates version 4 (random) UUIDs, the most widely used version for general-purpose unique identifiers.