About the UUID/GUID Generator
UUID/GUID Generator is a free browser-based developer tool from Convertify. Generate unique UUID v4 identifiers instantly — one at a time or in bulk, with optional uppercase or no-hyphen formatting. Everything runs instantly with no file upload, no account, and no usage limit.
Frequently Asked Questions
What version of UUID does this generate?
Version 4 — fully random UUIDs generated using your browser's built-in crypto.randomUUID(), which is cryptographically secure and the most commonly used UUID version for database keys and unique IDs.
How many UUIDs can I generate at once?
Up to 100 per click — generate again for more.
Is there any realistic chance of a duplicate?
No — a v4 UUID has 122 random bits, giving roughly a 1-in-2.7×10^18 chance of collision. You'd need to generate billions of UUIDs before a collision became remotely plausible.
Why would I remove the hyphens?
Some systems and database column formats expect a UUID as a plain 32-character hex string without separators — the "Remove Hyphens" option formats it that way instantly.
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