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UUIDジェネレーター
セキュリティ一意のIDを生成。
ttb run uuid-generator
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UUIDジェネレーター の使い方
Click "Generate" to create a new UUID (Universally Unique Identifier) in the standard 8-4-4-4-12 format. Generate v4 (random) or v1 (timestamp-based) UUIDs. Bulk generate up to 100 UUIDs at once. Copy individual IDs or the entire list. Essential for database primary keys, API resource identifiers, and session tokens.
1
Enter your parameters
Configure the inputs for the Uuid Generator according to your specific needs.
2
View real-time results
The utility instantly processes your request and displays the calculated outputs directly in your browser.
3
Copy or Download
Click the copy icon next to the final output to instantly grab the result, or export it if applicable.
よくある質問
Will UUIDs ever collide?+
UUID v4 generates 122 bits of randomness, yielding 5.3 × 10^36 possible values. You would need to generate 2.71 × 10^18 UUIDs to have a 50% chance of a single collision. For practical purposes, collisions are impossible.
When should I use UUID vs auto-increment?+
Use UUIDs when you need: globally unique IDs across distributed systems, IDs that don't reveal record count or creation order, or IDs generated client-side before database insertion. Use auto-increment for simpler, more compact, sortable IDs in single-database systems.