UUID Generator
Generate cryptographically random UUID v4 identifiers.
Instant Generation
Generate cryptographically random UUID v4 identifiers.
BulkTools's free UUID generator creates cryptographically random UUID v4 (Universally Unique Identifier) strings that are statistically guaranteed to be globally unique. UUIDs are 128-bit values formatted as 32 hexadecimal characters grouped in the pattern xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx.
When to use UUIDs: Database primary keys for distributed systems (no central counter needed), unique session tokens, API request tracking, file naming to prevent conflicts, product or entity identifiers in microservices architectures, and anywhere you need a value guaranteed to be unique across time and space without coordination.
Generate a single UUID or a batch of multiple UUIDs at once. Output is instantly copyable. Works entirely in your browser — no data is transmitted. Free and unlimited.