01
Choose a quantity
Generate between 1 and 100 identifiers in one batch.
UUID Generator
Generate one or many cryptographically secure UUID v4 identifiers directly in your browser.
Generator settings
Generated with your browser’s cryptographically secure UUID function. Nothing is sent to a server.
Generated UUIDs
0 UUIDs ready
Choose your settings, then generate UUIDs.
Your data is processed locally in your browser whenever supported and is not uploaded to our servers.
How it works
Generate UUIDs in three steps
02
Choose the format
Keep the standard hyphenated lowercase format or select uppercase and compact output.
03
Copy your UUIDs
Copy one identifier or the complete newline-separated batch.
Fast and private
Unique identifiers generated on your device.
UUIDs are created with the browser’s cryptographically secure UUID v4 function. No input, identifier, or history is sent to Got A Tool.
Standards-based UUID v4
Generated values include the correct version and variant bits for UUID version 4.
Bulk generation
Create up to 100 independent identifiers in a single click.
Flexible formatting
Choose canonical hyphens, compact output, lowercase, or uppercase letters.
No tracking or storage
Generated identifiers remain in the current browser session until you leave or regenerate them.
FAQ
Common questions
What is a UUID?
A UUID is a 128-bit identifier commonly used for database records, API objects, files, sessions, and distributed systems where independently generated IDs should be extremely unlikely to collide.
Are these UUIDs cryptographically secure?
They are generated with the browser's crypto.randomUUID function, which uses a cryptographically secure random number generator to produce UUID version 4 values.
Is a UUID guaranteed to be unique?
No finite random identifier can offer an absolute mathematical guarantee, but UUID v4 has such a large random space that accidental collisions are extraordinarily unlikely when used correctly.
Are generated UUIDs uploaded or saved?
No. Generation and formatting happen locally in your browser. Got A Tool does not receive or store the generated values.
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