Generate Multiple UUIDs
Generate a selectable number of UUID v4 values at once, letting you create multiple unique identifiers in parallel without duplicates. GDPR-compliant.
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How to use this tool (video)
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Generate Multiple UUIDs
The UUID batch generator creates a selectable number of UUID v4 values at once. UUID stands for Universally Unique Identifier and is a 128-bit value used in computing to uniquely identify information. The generator creates multiple UUIDs in parallel without duplicates. Everything happens locally in your browser.
How it works
A UUID v4 has 122 random bits, giving 2 to the power of 122 possible combinations. This is an extremely large number of approximately 5.3 times 10 to the power of 36 possible UUIDs. The structure of a UUID v4 consists of 32 hexadecimal characters in 5 groups with hyphens, for example 550e8400-e29b-41d4-a716-446655440000. Version 4 is recognized by the digit 4 at the third position and the letter 8, a, b, or 9 at the fourth position.
What the tool can and cannot do
The generator can create a selectable number of UUID v4 values at once. It uses a cryptographically secure random generator in the browser. It cannot generate UUIDs v1, v3, or v5, only UUIDs v4. This tool is a pure generation utility without further UUID management functions.
Why local processing in the browser
All UUID generation happens locally in your browser. Your inputs are never sent to a server. There is no upload and no server log files. You need neither an account nor a registration. After the page loads, the generator works offline too. There is no server that could be attacked and nothing is transmitted over the network. You can generate as many UUIDs as you like.
Frequently asked questions
What is a UUID v4?
A UUID v4 is a 128-bit value with 122 random bits. It offers 2 to the power of 122 possible combinations, which is approximately 5.3 times 10 to the power of 36.
Do I need to be online?
No, after the page has loaded, the generator works offline. The required assets are cached.
Are my data uploaded?
No, your inputs are never sent to a server. Everything is processed locally in your browser.
Can the generator produce UUIDs v1 or v3?
No, the generator produces only UUIDs v4. Other UUID versions are not supported.
Can generated UUIDs be duplicated?
Theoretically, with 2 to the power of 122 possibilities, the probability of a duplicate is practically zero. The generator uses a cryptographically secure random generator.
Is the tool free to use?
Yes, the UUID batch generator is a free tool that runs directly in your browser. There are no hidden costs.