Single ID
Input: 1
Output: A UUID v4 value such as 7c9e6679-7425-40de-944b-e07fc1f90ae7
Developer
UUID Generator
Generate 1 to 100 UUID v4 values using the browser crypto API.
Runs locallyNo uploadNo external API
Options
UUIDs are useful identifiers, not passwords, API keys, or security tokens.
Output
Choose how many UUIDs to generate, then run the generator.
Choose how many UUIDs to generate, then run the generator.
Runs in your browser. Input is not uploaded or sent to an external API.
Related tools
How to use UUID
Generate random UUID v4 identifiers for test records, database seeds, fixtures, and local development notes.
- Paste or type your input.
- Load the sample if you want a quick check.
- Run the action, review the result, then copy only what you need.
Examples
Bulk IDs
Input: 5
Output: Five newline-separated UUID v4 values
Common use cases
Create sample records
Generate IDs before converting JSON fixture rows to CSV.
Choose sortable IDs
Use ULID when lexicographic time order matters.
Limitations
Not a password
UUIDs identify records. They are not passwords, secrets, or access tokens.
FAQ
What API generates these UUIDs?
The page uses crypto.randomUUID when the browser provides it.
What is UUID vs GUID?
For most web work GUID and UUID refer to the same identifier format.