ToolsHubFree Online UUID Generator – Create UUID v4, v1, v3, v5
Generate unique UUIDs (Universally Unique Identifiers) online in just one click. Our tool supports UUID v4, UUID v3, UUID v5 UUID v1— perfect for developers, databases, APIs, and distributed systems. All UUIDs are created locally in your browser for maximum speed and privacy.
Generated UUID
UUID Version:
Why Use an Online UUID Generator?
Instant UUID Creation
Generate unique UUIDs (Universally Unique Identifiers) in just one click — no installation required.
Globally Unique
Every UUID is generated according to standards (RFC 4122), ensuring it’s universally unique.
Secure & Private
All UUIDs are generated locally in your browser. Nothing is stored or sent to a server.
Copy & Export
Easily copy UUIDs to clipboard or export them in bulk for development and testing.
Supports UUID v1, v4, v5, v3
Choose between different UUID versions, including UUID v4 (random) and UUID v5 (namespace-based).
Developer-Friendly Tool
Perfect for APIs, databases, distributed systems, or anywhere unique identifiers are needed.
UUID Generator – Frequently Asked Questions
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit string used to uniquely identify objects in software applications, databases, and systems.
Why should I use a UUID instead of an auto-increment ID?
Unlike sequential IDs, UUIDs are globally unique. They prevent collisions across different systems and make merging databases safer.
Which UUID versions can I generate?
Our UUID generator supports UUID v1, v4, and v5 — the most commonly used formats in software development.
Is UUID generation secure?
Yes. UUID v4 is generated using high-quality randomness in your browser, ensuring uniqueness and security.
Where are UUIDs commonly used?
UUIDs are widely used in APIs, session identifiers, database keys, distributed systems, and anywhere unique tracking is needed.
Can I generate multiple UUIDs at once?
Yes. Our tool allows bulk UUID generation, making it easy to create large sets of unique IDs instantly.