How do I use the UUID Generator?

Enter the required values and the UUID Generator will instantly calculate and display the result. No registration required.

Is the UUID Generator free?

Yes, all tools on CalcBOX are completely free with no registration required.

All calculations are performed in your browser. No data is sent to any server.

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UUID Generator

Generate and parse UUID v4/v7 with batch generation and format options.

UUID Version

Format

Batch Generate

About UUID Generator

UUID (Universally Unique Identifier) is a 128-bit identifier standard defined in RFC 9562. UUIDs are widely used in databases, APIs, and distributed systems to uniquely identify resources without a central authority.

UUID v4 uses cryptographically secure random numbers. UUID v7 embeds a Unix timestamp in the first 48 bits, making them time-sortable while retaining uniqueness — ideal for database primary keys.

📖How to Use

1Select the version (v4: random, v7: time-based)
2Click generate to create a UUID
3Use bulk mode to generate multiple UUIDs at once

💡Tips & Knowledge

•UUID v4 is fully random; the probability of collision is astronomically small and practically zero
•UUID v7 embeds a timestamp making it sortable chronologically — ideal as a database primary key
•Widely used for database primary keys and session ID generation

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All calculations run in your browser. No data is sent to any server.