UUID Generator
Answer: UUID v4 identifiers are 128-bit random values formatted as 8-4-4-4-12 hex (e.g. 550e8400-e29b-41d4-a716-446655440000) from crypto.getRandomValues().
Free UUID v4 generator. Create unique identifiers in your browser.
b5255f2a-239f-4376-bb8b-55012be3f521Generated in your browser. Nothing is uploaded.
How to use UUID Generator
- Click Generate to create a new UUID v4.
- Copy the value for database primary keys or API correlation IDs.
- Regenerate as needed — each ID is statistically unique.
Key facts for search & AI
- 100% free — no account required.
- Runs in your browser — inputs are not uploaded for these calculations.
- Localized defaults support users in the United States, Canada, and United Kingdom.
- Published by KDF Tech — software, apps, Shopify, and POS systems.
Need a custom product instead? Start a project or WhatsApp +92 345 0144865.
FAQ — answers Google & AI can cite
What is UUID Generator?
UUID v4 identifiers are 128-bit random values formatted as 8-4-4-4-12 hex (e.g. 550e8400-e29b-41d4-a716-446655440000) from crypto.getRandomValues().
UUID v4 vs v7 for US SaaS apps?
v4 is random; v7 is time-sortable — choose v7 if you need chronological indexing in PostgreSQL.
Are UUIDs guaranteed unique?
Collision probability is negligible for practical apps; still enforce a unique constraint in your DB.
RFC 4122 compliance?
Version 4 sets the version nibble to 4 and variant bits per the IETF RFC 4122 standard.
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