Generate random, unique UUID v4 identifiers — one at a time or in bulk.
Each value is a standard UUID version 4 (e.g. f47ac10b-58cc-4372-a567-0e02b2c3d479), generated using your browser's built-in crypto.randomUUID() function, which is cryptographically random rather than a simple counter or timestamp-based ID.
A UUID (Universally Unique Identifier) is a 128-bit random value formatted as 32 hexadecimal characters, commonly used as a unique ID for database records, API keys, or session tokens. The version generated here is UUID v4, which is fully random rather than based on timestamps or hardware addresses.
In practice, no. UUID v4 has so many possible combinations that the odds of a collision are astronomically small, even across billions of generated values, which is why UUIDs are trusted as unique identifiers in databases and software systems worldwide.
Yes. Use the quantity field to generate up to 100 UUIDs in one click, then copy the full list at once.
Need something else? See the full tools homepage.