UUID Generator
Generate cryptographically random UUID v4 values — up to 100 at once, copy individually or all.
How to use this tool
- 1Set the Count field (1-100) to how many UUIDs you need.
- 2Click Generate — the list of UUIDs appears below.
- 3Click Copy next to any UUID to copy it individually, or 'Copy all' to copy all as newline-separated text.
About UUID Generator
UUID v4 (Universally Unique Identifier version 4) is the standard format for generating unique identifiers in databases, APIs, and distributed systems. Each UUID is a 128-bit random value formatted as 8-4-4-4-12 hexadecimal characters (e.g. 550e8400-e29b-41d4-a716-446655440000). This generator uses crypto.randomUUID() when available (all modern browsers), falling back to a Math.random()-based implementation. Set the Count field (1-100) and click Generate to produce a list. Each UUID has its own Copy button; a 'Copy all' button copies all UUIDs as newline-separated text. Developers seeding database tables, generating test fixture IDs, creating idempotency keys for API requests, and anyone who needs a batch of unique identifiers are the primary users. Runs entirely in your browser.