UUID / GUID Generator (v4)
Generate cryptographically random UUID v4 strings individually or in bulk.
Overview
Generate RFC 4122 compliant version-4 UUIDs. Create up to 100 random UUIDs at once, toggle uppercase or lowercase, and copy to clipboard instantly.
UUID / GUID Generator: Cryptographically Secure v4 Identifiers
The UUID Generator produces RFC 4122 compliant version-4 Universally Unique Identifiers with 122 bits of cryptographic entropy.
How to Generate Bulk UUIDs
Fast & IntuitiveConfigure Batch Size
Pick quantity (1 to 100) and uppercase/lowercase format.
Generate with CSPRNG
Identifiers are populated via Web Crypto entropy.
Export to Clipboard
Copy generated UUID list in one click.
Key Highlights & Advantages
Zero server uploads. Everything processes securely within your local browser memory.
Immediate results with no file upload or download queues.
No registration, no paywalls, and no hidden quotas.
Seamlessly optimized for mobile smartphones, tablets, and desktop workstations.
All data processing runs natively via W3C compliant browser hardware acceleration.
- Use UUID v4 for database primary keys to decouple distributed microservice ID allocations.
Related Guides
Frequently Asked Questions
1 Q&AsWhat are the odds of a duplicate UUID v4 collision?
Virtually zero (~1 in 2.71 × 10¹⁸ for massive datasets).
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