Generate UUIDs
UUID generation happens in your browser session.
Why this tool works well
- Generates up to 50 UUIDs per run.
- Copy-ready output for rapid integration.
- Uses browser capabilities without server dependency.
- When seeding test data for a database, generate a batch of UUIDs here and paste them directly into your INSERT statements or fixture files. Each one is guaranteed unique across the batch.
- Use UUIDs as idempotency keys when retrying API requests. A unique key per request prevents duplicate processing even if the request is sent multiple times.
Use cases
Database seeds
Create IDs for local fixtures and migrations.
API tests
Generate realistic identifiers for request testing.
Manual references
Produce unique values for ad-hoc workflows.
Practical examples
Single UUID
Input: Count 1
Output: One v4 UUID line
Batch UUIDs
Input: Count 10
Output: Ten UUID lines
Suggested workflow
FAQ
Are UUIDs version 4?
Yes, generated values follow v4 format.
Can I generate multiple at once?
Yes, set count between 1 and 50.
Are the UUIDs generated here safe to use as primary keys?
Yes. The generator uses crypto.randomUUID() or a cryptographically secure fallback, producing standard RFC 4122 version 4 UUIDs suitable for database primary keys, session IDs, and resource identifiers.
What is the difference between UUID and GUID?
They are the same concept. GUID (Globally Unique Identifier) is Microsoft's term for what the RFC standard calls UUID. The format and uniqueness properties are identical.
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