UUID v4 generator
Generate one or several random UUID v4 identifiers, ready to use in databases or code.
Processed on your device. Nothing is sent to any server.
Generate version 4 UUIDs, random and with a practically negligible collision probability, ready to use as primary keys or unique identifiers.
Uses crypto.randomUUID() when available, or a fallback based on crypto.getRandomValues() that follows the UUID v4 format (correct version and variant bits).
Use cases
- Generating unique identifiers for development testing.
- Creating primary keys for a database.
- Uniquely naming temporary resources.
How it works
- 1
Choose how many you need
Set the number of UUIDs to generate (up to 100).
- 2
Copy the list
Copy all the generated UUIDs at once.
Frequently asked questions
- How likely is a UUID v4 collision?
- Practically negligible: with 122 random bits, it would take billions of UUIDs generated per second for years to have a meaningful collision probability.