Generate bulk RFC 4122 Version-4 UUIDs for database primary keys, API tokens, and seed scripts.
Bulk generate random unique identifiers for databases, APIs, and test mocks
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Generate random version-4 UUIDs in your browser. Choose a count, letter case, hyphen display, and optional prefix, then copy or download the list as plain text, JSON, or a SQL example.
Fast and easy from start to finish
Choose how many IDs you want.
Set case, hyphens, optional prefix, and output format.
Generate the list and copy or download the result.
What you can do with this tool
Random v4 IDs: Create identifiers using the browser's random UUID function.
List controls: Choose the count, letter case, and hyphen display.
Optional prefix: Add your own text before each generated identifier.
Output formats: Copy or download text, JSON, or SQL-formatted results.
Everyday walkthroughs and starter ideas for UUID / GUID Generator
Generate five standard lowercase IDs and download them as JSON.
File requirements, capabilities, and system limits
Random IDs have an extremely low collision probability, not a mathematical guarantee of uniqueness. Keep appropriate database uniqueness checks.
How creators, students, and professionals use UUID / GUID Generator
Create sample record identifiers.
Prepare test data for an application.
Answers to common questions about UUID / GUID Generator
The generated core is a version-4 UUID, but adding a prefix changes the full string. Use the standard format when your database requires a UUID value.
No. It is a text example for copying or downloading. The tool does not connect to a database.
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