QuizOxa Tools
Developer Client-Side

Free Online UUID/GUID Generator

Generate cryptographically secure UUID v4 (Universally Unique Identifier) values using your browser's native crypto API. Generate single or batch UUIDs (up to 100 at once), copy individual values or all at once, and choose between standard hyphenated format or compact format. UUIDs are essential for database primary keys, distributed systems, session tokens, and any scenario requiring globally unique identifiers.

100% In-Browser Privacy Instant Zero-Lag Execution Zero Data Uploaded
26ba6af2-f169-4607-aa2f-ca62345565a0
5d39738c-8aa8-443b-bc89-4600aa9287a7
f2943d16-a391-49bf-9240-61d065f645a5
9f954101-bb6c-4529-875f-223c2ab62460
c873628e-e3a7-4790-aa8f-6605f69a0247

Frequently Asked Questions

UUID v4 uses 122 bits of randomness, giving 5.3 × 10^36 possible values. The probability of generating a duplicate is astronomically low — you'd need to generate 1 billion UUIDs per second for 85 years to have a 50% chance of one collision.