UUID Generator: The Simplest Tool Online

If you need quick identifiers, this uuid generator helps. It creates RFC 4122 version 4 values in your browser. Set a count and choose a format. Then click once.

What Is a UUID Generator?

UUID stands for Universally Unique Identifier. Each UUID is a 128 bit value written as hexadecimal digits. Version 4 uses random numbers set into a fixed layout. RFC 4122 defines the format and rules for these values. This uuid generator builds those values on demand. The chance of a clash is about 1 in 5.3 x 10^36.

• Default shows five groups split by dashes in the 8 4 4 4 12 pattern.
• Uppercase changes letters to A through F.
• With Braces wraps the value in curly braces.
• No Dashes removes separators and shows 32 hexadecimal digits.

Why Use Our UUID Generator?

You need quick identifiers for many tasks. This tool gives simple controls and clear results.

• Create database keys for sample records.
• Tag log lines with request identifiers.
• Generate test data for staging and quality assurance.
• Name files or cache entries with small clash risk.
• Seed distributed systems with identifiers.

Tips for best results

• Match the format to your code or database style.
• Generate in batches for faster copy and paste.
• Use counts that fit your task.

Notes and limits

• The tool returns up to 100 values per run.
• It uses your browser cryptography when available.
• If the browser lacks that feature, it falls back to a simple source.
• That fallback suits tests and demos.
• Use a dedicated secret generator for tokens and passwords.
• Use this only for software identifiers and test data.
• Skip Social Security numbers or any legal identifiers.
• The copy action may ask for permission in some browsers.

How to Use It

1. In Number of UUIDs to generate, enter a value from 1 to 100.
2. Open Format and pick one option.
3. Click Generate UUID(s).
4. Read the list that appears below.
5. Click Copy to Clipboard to copy all values.
6. Click Clear to reset and start again.

Inputs explained

• Number of UUIDs to generate sets how many values to create.
• Format changes the style of the output.

What the output means

• Each line is one UUID v4 value.
• Hexadecimal means digits 0 through 9 and letters a through f.
• Uppercase shows A through F for letters.
• With Braces adds curly braces around the value.
• No Dashes gives a compact 32 character string.

Use this uuid generator to speed up clean, standards based ID work.