Generator settings
Choose the UUID version, quantity, representation, and letter case.
Generated identifiers
One identifier per line. Changing display options reformats the current batch.
Batch summary
UUID / GUID Batch Generator
Generate standards-compliant UUID v1, v4 and v7 identifiers in bulk without sending the generated values to a server.
All UUIDs are generated in this browser and are not uploaded, stored or sent to an external API.
Features
- UUID v1, v4 and v7 generation
- Batches from 1 to 5,000 identifiers
- Standard, GUID and compact representations
- Copy all or export as TXT, CSV and JSON
How to use
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Choose a version
Use v4 for general random IDs, v7 for time-sortable IDs, or v1 when a time-based UUID is required.
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Set the batch
Choose the quantity, display representation and letter case.
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Generate locally
Create the batch with the browser cryptographic random source and verify uniqueness.
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Copy or export
Copy the visible list or download a TXT, CSV or JSON file.
FAQ
What is the difference between UUID and GUID?
GUID is Microsoft terminology for the same 128-bit identifier family. The brace display option changes representation, not the underlying value.
Which UUID version should I choose?
Use v4 for broadly compatible random identifiers. Use v7 when database index locality or chronological sorting matters. Use v1 only when a time-based format is required.
Does UUID v1 expose my MAC address here?
No. This generator creates a random session node ID and never reads the hardware MAC address. A v1 value still contains a creation timestamp.
Can generated UUIDs collide?
Collision is extremely unlikely with cryptographically secure v4 or v7 random bits, but no finite identifier space can promise mathematical impossibility. This tool also checks each generated batch for duplicates.