UUID Generator
FastGenerate v4 UUIDs individually or in bulk, with copy and export
About UUID Generator
UUID / GUID Generator generates RFC 4122 compliant version 4 Universally Unique Identifiers. Generate single or bulk UUIDs with customized uppercase/lowercase formatting and hyphen options.
Ideal for database primary keys, distributed system trace IDs, API session tokens, and mock test data creation.
Common Use Cases
- Generating unique primary keys for new database records
- Creating trace IDs for distributed systems and microservice logging
- Producing mock test data with realistic unique identifiers
How to Use UUID Generator
- Select the number of UUIDs you want to generate (up to 500).
- Choose formatting options like uppercase or hyphen removal.
- Copy or download the generated list as text or CSV.
Real-World Examples
Generate: 13f9a1b2c-8d4e-4a6f-9c1d-2e5f7a8b9c0dImportant Notes & Limitations
- Version 4 UUIDs are randomly generated, not sequential, so they can't be sorted by creation time
- Bulk generation is capped at 500 per click to keep the browser responsive
Privacy & Data Security
UUID Generator processes all operations 100% locally in your web browser memory. Your files, text snippets, and generated outputs are never stored, logged, or uploaded to any remote server.
Frequently Asked Questions
A Version 4 UUID is a 128-bit randomly generated identifier with a virtually zero chance of collision across systems.
Yes, you can generate up to 500 UUIDs in a single click and download them as text or CSV.
Yes, toggle custom formatting settings to output uppercase letters or remove hyphens.
Yes, RFC 4122 v4 UUIDs are universally standard for PostgreSQL, MongoDB, MySQL, and API token identifiers.