UUID Generator
The UUID Generator creates cryptographically random UUID v4 identifiers that are guaranteed to be unique across all devices and systems. Use them for database primary keys, API resource IDs, session tokens, file names, or any scenario requiring a unique identifier. Generate one or hundreds in bulk with a single click.
Features
- UUID v4 (random) generation
- Generate 1 to 100 UUIDs at once
- Copy individual UUIDs with one click
- Copy all UUIDs to clipboard at once
- Uppercase and lowercase format toggle
- Instant generation — no network needed
- RFC 4122 compliant UUID format
How to Use
- 1Click Generate UUID to create a single UUID instantly
- 2Set the quantity field to generate multiple UUIDs at once
- 3Toggle between uppercase and lowercase format if needed
- 4Click the copy icon next to any UUID to copy it
- 5Click Copy All to copy the full list at once
💡 Pro Tips
Use UUIDs as primary keys in distributed databases to avoid ID collisions when merging data from multiple sources.
UUIDs work great as idempotency keys in API requests — use the same UUID to safely retry failed requests.
Store UUIDs without hyphens in databases to save 4 bytes of storage per row at scale.
Common Use Cases
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Frequently Asked Questions
Everything you need to know about the UUID Generator. Fast answers to common questions about functionality, privacy, and pricing.