Nano ID Generator

Generate secure, URL-friendly unique IDs

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21

Collision Probability

At 21 characters with 64 character alphabet:

~1 collision in millions of years at 1000 IDs/second

About Nano ID

Nano ID is a tiny, secure, URL-friendly, unique string ID generator.

  • Cryptographically strong random generation
  • URL-safe by default
  • Smaller than UUID (21 chars vs 36)
  • Customizable alphabet and length

About Nano ID Generator

Generate secure, URL-friendly unique IDs

Use this free online programming tools tool to work faster without installing extra software. The interface is built for quick input, clear output, and straightforward results on desktop and mobile devices.

Processing

This tool runs in your browser whenever possible, which keeps your inputs private and reduces unnecessary round-trips to the server.

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