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Free UUID v4 Generator Online
Free UUID v4 Generator Online is a free online tool by US AI. RFC4122 random UUIDs. It runs completely in your browser — no signup, no download, works on mobile and desktop.
📖 How to use
- Choose how many UUIDs you need and press Generate — RFC4122 v4 IDs appear instantly.
- Open the tool with the button above — it loads instantly.
- Your work stays on your device; nothing is uploaded anywhere.
✨ Why use this tool?
US AI's free uuid v4 generator online is fast, private and 100% free forever. Bookmark this page and share it with anyone who needs it.
❓ Frequently asked questions
What is a UUID used for?
A UUID (Universally Unique Identifier) is a 128-bit random string like 550e8400-e29b-41d4-a716-446655440000, used as unique IDs for database records, API keys, files, and sessions.
Are generated UUIDs really unique?
UUID v4 uses cryptographically strong randomness, making collisions practically impossible — safe to use as primary keys and identifiers.
Is my UUID stored anywhere?
No. Generation happens entirely in your browser; nothing is uploaded, logged, or saved.