UUID / GUID Generator

Generate random UUID v4 identifiers instantly — in bulk or one at a time. Runs entirely in your browser.

Number of UUIDs

For testing and development — each UUID is generated with true cryptographic randomness (crypto.randomUUID)

How to Use

1

Set the count

Choose how many UUIDs to generate (1–50).

2

Click Generate

Click "Generate" and UUID v4 identifiers appear instantly.

3

Copy what you need

Copy a single UUID with its button, or copy all at once.

4

Regenerate

Click "Generate" again for a completely new set.

What is UUID and why do you need it?

UUID (Universally Unique Identifier) is a 128-bit identifier used virtually everywhere in modern software — as primary keys in databases, session identifiers, transaction tracking, and resource disambiguation in distributed systems. The v4 type generated here uses true cryptographic randomness via crypto.randomUUID(), making collisions practically impossible.

Every generation happens locally in your browser — no UUIDs are sent to any server or logged anywhere. Also suitable as GUIDs in .NET and SQL Server environments. For broader dev needs, try the Hash Generator or Password Generator.

لمن يريد فهم صيغة UUID v4 وحالات الاستخدام بالتفصيل — قواعد البيانات والـ API والاختبار — راجع دليل UUID v4 مع أمثلة على الصيغة الصحيحة ومقارنة بين الإصدارات.

FAQ

UUID is a 128-bit universally unique identifier in the format xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx. It is used to identify resources uniquely across computer systems without a central authority.

GUID is Microsoft's term for the same UUID standard. The structure and format are identical — this tool generates both.

Yes, UUID v4 is excellent as a primary key. The collision probability is negligible: 1 in 5.3 × 10^36.

No. The tool runs entirely in your browser via the built-in crypto.randomUUID(). Nothing is sent to our servers.