UUID Generator
Generate random UUIDs (v4) instantly. Copy to clipboard with one click.
Generated UUIDs
About UUID Generator
Generate universally unique identifiers (UUID v4) for your applications, databases, APIs, and more. UUIDs are 128-bit numbers used to identify information in computer systems. Our tool generates cryptographically random UUIDs directly in your browser. Generate single or bulk UUIDs and copy them instantly.
Common Use Cases
Database Primary Keys
Generate unique identifiers for database records without centralized coordination.
API Development
Create unique request IDs, session tokens, and transaction identifiers for APIs.
File Naming
Generate unique filenames for uploaded files to prevent collisions on servers.
Testing
Developers can generate bulk UUIDs for populating test databases and mock data.
How to Use UUID Generator
- 1
Choose how many UUIDs you want to generate (1, 5, 10, or custom amount).
- 2
Select uppercase or lowercase output format.
- 3
Click "Generate UUIDs" to create cryptographically random identifiers.
- 4
Review the generated UUIDs in the output list.
- 5
Click the copy icon next to any UUID or copy all at once.
Frequently asked questions
Tips for Best Results
- !
UUID v4 has approximately 2^122 possible combinations — collisions are practically impossible.
- !
Use lowercase UUIDs for most applications; uppercase is rarely needed.
- !
Always validate UUID format in your backend before accepting it as input.
- !
Do not use UUIDs for sequential ordering — they are random and unsorted by design.
Why Use Our UUID Generator؟
Generate UUID v4 instantly
Bulk UUID generation
Copy to clipboard with one click
Uppercase and lowercase options
100% client-side generation
Free and unlimited