UUID Version 4 Generator

Generate independent UUIDs with PHP cryptographic randomness.

Random record identifiers help separate new entries without relying on a sequential label.

Generate the required UUIDs and check how they will be stored in the receiving system.

Inputs and controls

Identifier batch · identifiers

Allowed range: 1 to 100

Identifier batch

Lowercase, Uppercase

Choose output case. Enter number of UUIDs.
Select Process input. Read the returned values alongside the assumptions below before copying, exporting or acting on the result.

Version and variant bits follow the UUID v4 format with cryptographic randomness.

UUIDs use random_bytes, version 4 and RFC variant bits. They are identifiers, not authentication secrets.

UUIDs use random_bytes, version 4 and RFC variant bits. They are identifiers, not authentication secrets.

Can a UUID replace an authentication secret?

No. These are identifiers. Authorization and database uniqueness still need their own controls.

What should I check before using UUID Version 4 Generator?

Check Number of UUIDs and Output case. Use the exact units shown beside the controls and replace any example values with your own inputs.

Source page last modified: 2026-10-04T16:58:29+00:00. This profile describes the tool; use its page to run it.

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