UUID Generator & Validator
Generate cryptographically random UUID v4 values in bulk and validate existing UUIDs.
UUID generation uses your browser's secure random generator.
Validate a UUID
UUID structure
A UUID contains 128 bits displayed as five hexadecimal groups in an 8-4-4-4-12 pattern. Version 4 UUIDs use random data with fixed version and variant bits.
FAQ
Are duplicate UUIDs possible?
Theoretically yes, but the probability is negligible for ordinary applications when generated securely.
Is a GUID different?
GUID is Microsoft's name for the same general identifier format.