UUID Generator

Generate random UUIDs in v4 and v7 formats with bulk generation and one-click copy support.

1. Select the UUID version you need - v4 (random) or v7 (time-ordered) using the version toggle. 2. Set the quantity of UUIDs to generate, from a single ID up to 1000 at once. 3. Choose the output format - plain list, JSON array, SQL values, or comma-separated. 4. Toggle the hyphen format option if you need UUIDs without dashes. 5. Click Generate to create your UUIDs and use the copy button to copy all of them at once.

About This Tool

The UUID Generator creates universally unique identifiers in both v4 (random) and v7 (time-ordered) formats, with support for generating multiple UUIDs at once. Whether you need a single identifier for a database record or a batch of UUIDs for seeding test data, this tool delivers them instantly.

UUID v4 generates fully random identifiers with 122 bits of randomness, making collisions virtually impossible. UUID v7, the newer standard, embeds a Unix timestamp in the first 48 bits, making the IDs naturally sortable by creation time while maintaining uniqueness - ideal for database primary keys where insertion order matters for performance.

Bulk generation lets you create up to 1000 UUIDs at once with options to format them as a plain list, JSON array, SQL values, or comma-separated. Each generated UUID can be copied individually or as a complete set with a single click.

Frequently Asked Questions

UUID v4 uses 122 bits of cryptographically random data, making each ID unpredictable. UUID v7 embeds a 48-bit Unix millisecond timestamp followed by random bits, making IDs time-sortable while still unique - better for database primary keys.

Extremely unlikely. With UUID v4, you would need to generate about 2.71 quintillion UUIDs to have a 50% chance of a single collision. In practical terms, the probability is negligible for any real application.

UUID v7 is generally preferred for database primary keys because its time-ordered nature improves B-tree index performance and reduces page splits. UUID v4 is better when you need unpredictable identifiers, such as for security tokens.

Yes. This tool uses the Web Crypto API (crypto.getRandomValues) to generate random bytes, which provides cryptographically secure random number generation suitable for security-sensitive applications.

Yes. The tool offers a format toggle to output UUIDs with standard hyphens (550e8400-e29b-41d4-a716-446655440000) or without them (550e8400e29b41d4a716446655440000) for systems that prefer the compact form.

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