UUID Generator

This online UUID generator creates universally unique identifiers on demand - classic random version 4 UUIDs or modern, time-ordered version 7 UUIDs that sort naturally by creation time. Generate a single random UUID or thousands at once, then copy them individually or as a newline-delimited list. Everything is generated locally using the browser's cryptographic random source.

• Generate UUID version 4 (random) and version 7 (time-ordered, sortable)
• Bulk mode: create up to thousands of unique IDs in a single click
• Cryptographically secure randomness via crypto.getRandomValues
• Toggle uppercase, hyphenless, and braced { } output formats
• Copy a single UUID or the entire list as newline-separated text
• Instant regeneration with no rate limits, accounts, or network calls

1. 1

   Pick a UUID version

   Choose v4 for general-purpose random identifiers, or v7 when you want IDs that sort by creation time - ideal for database primary keys.

2. 2

   Set how many you need

   Generate one ID or enter a count for bulk output. IDs appear instantly as you change the amount.

3. 3

   Adjust the format (optional)

   Switch to uppercase, remove hyphens, or wrap each value in braces to match your platform's conventions.

4. 4

   Copy and use

   Copy a single value or the whole list, then paste it into your code, database, or config.

• Primary keys and foreign keys for database records
• Idempotency keys and request IDs for APIs and message queues
• Correlation IDs for distributed tracing and structured logging
• Unique filenames, session tokens, and cache keys
• Seeding test fixtures and mock data with realistic identifiers
• Stable React keys and DOM element IDs during prototyping