ConverterHub

UUID Generator (v4)

Generate secure, random UUIDs (Universally Unique Identifiers) version 4 locally in your browser. Bulk generation supported.

Generated client-side using Crypto.randomUUID()

Capabilities

✓ Local Processing
Data never matches server
✓ Large Files
Optimized for 5MB+ text
✓ Privacy First
No logs, no tracking
✓ Standard Compliant
Strict RFC adherence

How It Works

A UUID (Universally Unique Identifier) is a 128-bit number used to identify information in computer systems. This tool generates Version 4 UUIDs, which are constructed using random numbers.

Format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx

  • x is any hexadecimal digit.
  • 4 indicates version 4 (random).
  • y is one of 8, 9, A, or B.

Because it uses the browser's cryptographic crypto.randomUUID() API, it is suitable for production use cases.

Frequently Asked Questions

Are these UUIDs unique?
Yes. Version 4 UUIDs use 122 bits of randomness. The probability of collision is astronomically low.
How many can I generate at once?
You can generate up to 50 UUIDs at a time with this tool.

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