UUID生成

一意の識別子を生成 (UUID v4)

ジェネレーター設定

150100
大文字
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UUID検証

💡 About UUIDs

UUID (Universally Unique Identifier) is a 128-bit label used for information in computer systems. The probability of generating duplicate UUIDs is extremely low.

UUID Format (v4):
xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
• x: any hexadecimal digit
• 4: version number (v4)
• y: one of 8, 9, A, or B
• Total: 36 characters with hyphens
Common Use Cases:
  • Database primary keys
  • Session identifiers
  • File naming
  • API request tracking
  • Distributed systems
  • Transaction IDs
Features:
✓RFC 4122 compliant
✓Cryptographically secure
✓No external dependencies
✓Bulk generation
Example:
With hyphens:550e8400-e29b-41d4-a716-446655440000
Without hyphens:550e8400e29b41d4a716446655440000
Uppercase:550E8400-E29B-41D4-A716-446655440000