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UUID Generator

Generate unique identifiers for databases, APIs, and applications

Recommended
UUID v4
Generate random UUIDs using cryptographically secure algorithms

Features

Cryptographically secureRandom generationMost commonRFC 4122 compliant
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Recommended
UUID v7
Generate time-ordered UUID v7 identifiers with Unix timestamp for lexicographic sorting

Features

Time-orderedLexicographic sortingUnix timestampModern standard
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UUID v6
Generate time-based UUID v6 identifiers with reordered timestamp fields for better sorting

Features

Time-basedBetter sorting than v1v1 compatibleChronological
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Recommended
UUID v5
Generate deterministic UUID v5 identifiers using SHA-1 hash of namespace and name

Features

Name-basedSHA-1 hashDeterministicSecure
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UUID v3
Generate deterministic UUID v3 identifiers using MD5 hash of namespace and name

Features

Name-basedMD5 hashDeterministicLegacy support
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UUID v1
Generate timestamp-based UUIDs with MAC address components

Features

Timestamp-basedSortableMAC addressSequential
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NIL UUID
Generate NIL UUID (Null UUID) - a special identifier consisting of all zeros

Features

All zerosNull referenceRFC compliantSpecial value
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GUID
Generate Microsoft-style GUIDs (same format as UUID v4)

Features

Microsoft format.NET compatibleWindows standardSame as UUID
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Learn More

Understand UUID types and best practices

What is UUID
Learn about UUID structure, types, and standards
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How to Use UUIDs
Best practices for implementing UUIDs in your applications
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Ready to Generate UUIDs?

Choose from different UUID versions based on your specific requirements

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