Limits: Bulk generate: 1–100 at a time
UUID Generator
Generate random UUIDs (v4). Bulk generate up to 100 at once.
Settings
About UUID Generator
UUID Generator creates version 4 (random) UUIDs using the browser's cryptographic random API. Generate a single UUID or up to 100 at once in bulk. Copy individual UUIDs or the entire list with one click.
UUIDs (Universally Unique Identifiers) are 128-bit identifiers used as primary keys, correlation IDs, session tokens, and unique identifiers across distributed systems. Version 4 UUIDs are random and have an astronomically low probability of collision.
Includes options to format UUIDs in uppercase, without hyphens, or as a JSON array.
Features
- ✓UUID v4 (random) generation
- ✓Bulk generate 1–100 UUIDs at once
- ✓Format options: lowercase, uppercase, no hyphens
- ✓Copy all as JSON array
- ✓Uses crypto.randomUUID for cryptographic randomness
Common Use Cases
- →Generating primary keys for database records
- →Creating request correlation IDs for logging
- →Making unique identifiers for distributed system events
- →Seeding test fixtures with known IDs