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UUID v4 Generator — Random UUIDs Online

Bulk generate cryptographically secure API keys, salts, tokens, and decode precise millisecond timestamps from UUIDv7.

Processing... 0%
Reading system entropy
Generating unique UUID blocks
Formatting exports
Done

Result

This page opens the secrets generator with UUID v4 already selected — set how many identifiers you need, pick an output format and copy the result.

UUID v4 is a fully random 128-bit identifier: 122 of its bits come straight from the browser's cryptographic random generator, making collisions practically impossible. It is the default choice for database keys, request IDs and anywhere you need a unique value that carries no embedded information.

The full tool also generates UUID v7, hex salts and Base64 tokens, exports to .env, JSON and YAML, and decodes UUID v7 timestamps — everything runs locally in your browser, nothing touches a server.

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🛡️
Executed in Browser

Your files and inputs never leave this device. Processing runs completely offline. 100% Secure.

Accepted Formats & Rules

  • Bulk generation of UUIDv4, UUIDv7, Hex salts, and Base64 tokens.
  • Timestamp decoder for UUIDv7 identifiers.
  • Environment and configuration syntax builders.

Key Benefits

✓ UUIDv7 Date-Time Decoder: Extract precise millisecond creation timestamps from UUIDv7.
✓ Format Exporter: Exports generated keys formatted as .env files, JSON configs, or YAML lists.
✓ Uniform Entropy: Utilizes browser CSPRNG for high-entropy secure values.

Use Cases

  • • Do you want to generate cryptographically secure salts, API keys, and secret tokens in bulk?
  • • Need to decode a UUIDv7 string and extract the embedded millisecond generation timestamp?
  • • Want to generated secret keys formatted as .env files, JSON configurations, or YAML lists?