UUID Generator
Generate UUID / GUID Online
About UUID Generator
The UUID Generator is a free online tool that instantly generates Universally Unique Identifiers (UUIDs), also known as GUIDs (Globally Unique Identifiers). Generate one or up to 100 UUIDs at a time with a single click — no server required. All generation happens locally in your browser using the cryptographically secure
UUIDs (version 4) are 128-bit numbers represented as 32 hexadecimal digits displayed in five groups separated by hyphens:
Common uses for UUIDs: database primary keys, session tokens, API keys, distributed system node identifiers, file names to prevent collisions, feature flags, and tracking user sessions. Our tool generates RFC 4122 compliant version 4 UUIDs using cryptographically strong random values.
crypto.randomUUID() API, ensuring each UUID is truly unique and unpredictable.UUIDs (version 4) are 128-bit numbers represented as 32 hexadecimal digits displayed in five groups separated by hyphens:
xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx. They are designed to be globally unique without requiring a central registration authority.Common uses for UUIDs: database primary keys, session tokens, API keys, distributed system node identifiers, file names to prevent collisions, feature flags, and tracking user sessions. Our tool generates RFC 4122 compliant version 4 UUIDs using cryptographically strong random values.
starKey Features
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Cryptographically Secure
Uses the browser Web Crypto API for truly random, unpredictable UUIDs.
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Generate Up to 100 at Once
Set a count from 1 to 100 and generate all UUIDs in a single click.
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100% Client-Side
All UUID generation happens locally. No data sent to any server.
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Copy & Download
Copy all UUIDs to clipboard or download as a plain text file.
help_outlineHow to Use
1
Set Count
Enter the number of UUIDs you want to generate (1 to 100) in the Count field.
2
Click Generate
Click the Generate button to instantly create the specified number of UUIDs.
3
Copy or Download
Copy all UUIDs to your clipboard with one click, or download them as a .txt file.
lightbulbUse Cases
storage
Database Primary Keys
Use UUIDs as primary keys in distributed databases to avoid ID collisions.
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API Keys & Tokens
Generate unique API keys, session tokens, or secret keys for your applications.
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Unique Filenames
Create collision-proof filenames for uploads, logs, and temporary files.
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Distributed Systems
Assign unique IDs to nodes, messages, and events in distributed architectures.