Single identifier
Generate 1 UUID
A random UUID v4
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Generate secure random UUID version 4 identifiers locally.
Quick answer
A UUID version 4 contains 122 random bits plus fixed version and variant bits.
Result
Illustrative view
Secure random bytes are formatted with standard version and variant bits.
A UUID version 4 contains 122 random bits plus fixed version and variant bits. This tool gets random bytes from the browser cryptography API and formats them in the standard 8-4-4-4-12 layout.
UUIDs are useful as decentralized identifiers, but generating one does not create a database record or guarantee that an application accepts it.
Generate 1 UUID
A random UUID v4
Generate 10 UUIDs
Ten copyable identifiers
They use the browser's cryptographically secure random-number generator and set the UUID version 4 and variant bits.
A collision is theoretically possible but extraordinarily unlikely with properly generated UUID v4 values.
No. This tool runs locally in your browser, so the values or files you provide are not sent to a ToolStack server.
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