UUID Generator
Generate universally unique identifiers (UUIDs)
Single UUID
Generate one UUID at a time
eee0656a-ddf0-4798-81ad-b21f79c7f216UUID Info
Version: 4 (Random)
Length: 36 characters
Format: standard
Bulk Generation
Generate multiple UUIDs at once
About UUIDs
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information. UUIDs are standardized by RFC 4122 and are designed to be unique across space and time.
Features
- Generate UUID v1 (timestamp-based) and v4 (random)
- Multiple output formats (standard, uppercase, no hyphens, braces, URN)
- Bulk generation up to 1000 UUIDs
- Copy individual or all UUIDs
- Download as text file
Generate cryptographically random UUID v4 identifiers instantly. UUIDs (Universally Unique Identifiers) are 128-bit values used as unique IDs in databases, APIs, distributed systems, and software development. Generate single or bulk UUIDs with one click.
Key Features
- ✓Generate UUID v4 (random)
- ✓Bulk generation (multiple UUIDs at once)
- ✓Uppercase and lowercase formatting
- ✓With or without hyphens
- ✓Cryptographically secure random generation
How to UUID Generator Online
- 1
Click generate
A new random UUID is generated instantly.
- 2
Configure options
Set quantity, format, and case preferences.
- 3
Copy UUIDs
Click copy to use the generated identifiers.
Common Use Cases
- •Generating primary keys for database records
- •Creating unique identifiers for API resources
- •Generating correlation IDs for distributed tracing
- •Creating unique file names or session tokens
Frequently Asked Questions
Are these UUIDs truly unique?▼
UUID v4 uses 122 random bits, giving over 5.3×10³⁶ possible values. The probability of collision is astronomically small.
What format is used?▼
Standard UUID format: 8-4-4-4-12 hexadecimal characters (e.g., 550e8400-e29b-41d4-a716-446655440000).