UUID Validator

Validate UUIDs instantly. Detect version, variant, and see the full structure breakdown. Supports batch validation.

Validate UUIDs

Enter one UUID per line for batch validation

How It Works

  1. Enter one or more UUIDs
  2. Click Validate to check them
  3. See valid/invalid status per UUID
  4. View version and variant info
  5. See the structure breakdown

UUID Versions

  • V1 - Time-based
  • V3 - Name-based (MD5)
  • V4 - Random (most common)
  • V5 - Name-based (SHA-1)
  • V7 - Time-based (new)

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Frequently Asked Questions

What is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit identifier used to uniquely identify information in computer systems. The standard format is 8-4-4-4-12 hexadecimal characters, e.g. 550e8400-e29b-41d4-a716-446655440000.

What UUID versions exist?

UUID v1 is time-based, v2 is DCE security, v3 is name-based (MD5), v4 is random, v5 is name-based (SHA-1), and v6/v7 are improved time-based versions. V4 is the most commonly used.

How do I validate a UUID?

Paste one or more UUIDs into the textarea (one per line) and click Validate. The tool checks format, detects version and variant, and shows a structure breakdown for each UUID.

Is my data uploaded to a server?

No. All validation happens entirely in your browser using regular expressions and bit analysis. Your UUID data never leaves your device.

Read Guide: UUID Validator Guide