Online UUID/GUID Generator

About Online UUID/GUID Generator

How to use Online UUID/GUID Generator

1. Select a UUID version (v1, v4, or v7). We recommend v4 as the default; v1 is legacy and not recommended, while v7 is the new standard for sortable high-performance use cases.
2. Enter the quantity to generate, between 1 and 10,000.
3. Check the format options you need: uppercase conversion, remove hyphens, or Microsoft GUID format (wrapped in braces).
4. Click the 'Generate' button to display the list. Click individual UUIDs to copy them, or use 'Copy All' for the entire batch.
5. Download as CSV or JSON to feed directly into spreadsheets or database initialization scripts.

Benefits of Online UUID/GUID Generator

• [High-Speed Bulk Generation of Up to 10,000 IDs] When seeding a database with large amounts of test data, creating UUIDs one at a time by hand is impractical. With this tool, you simply enter the desired quantity, and with a single click you can instantly generate a list of 10, 100, or up to 10,000 unique IDs, then copy them all to your clipboard at once, or download as CSV/JSON.
• [Flexible Format Options: Uppercase/Lowercase, Hyphens, and Microsoft GUID Format] Different systems and databases often have strict formatting rules, such as requiring all UUID letters in uppercase, storing them as a continuous 32-character string without hyphens, or using Microsoft's brace-wrapped GUID format {UUID}. A simple toggle of the checkboxes in this tool lets you instantly output UUIDs in exactly the format your project requires.
• [UUID v1, v4, and v7 Version Support for RFC 4122 Compliance] Choose the UUID version that best fits your use case: v4 for random IDs (most common), v1 for timestamp-based compatibility (legacy, not recommended), or v7 for sortable, high-performance modern systems. All versions are strictly RFC 4122 compliant.
• [Secure Offline Generation via Web Crypto API] Generating UUIDs on a remote server is risky when those IDs will be used as database primary keys or user authentication tokens, since they could be intercepted in transit. This tool uses your browser's built-in cryptographically secure pseudo-random number generator (CSPRNG) to compute everything locally on your device, with no external network requests whatsoever, meeting even the strictest security requirements.