Random ID Generator

Create unique ID strings by choosing a prefix, length, and character type.

Category: Random & Generation

When to use?

Use it when you need unique IDs for database seed data, API tests, UI mockups, or sample records.

How to use

  • Set an optional prefix, character type, length, and count.
  • Generate IDs.
  • Copy the IDs you want to use.

Input Explanation

Choose alphanumeric, hexadecimal, or numeric characters; set a length from 1 to 64 and generate up to 20 IDs at once.

Calculation Basis

It uses browser crypto.getRandomValues to pick characters from the selected character set.

Usage Examples

  • Create dummy records - Generate IDs for test database rows or API payloads.
  • Fill mockups - Make realistic-looking IDs for prototype screens.
  • Short custom IDs - Create shorter IDs with a prefix when UUID format is too long.

Examples

  • Alphanumeric 12 chars → mK7xQpRn2Wv9
  • Prefix user_ + numeric 6 chars → user_482019

Cautions

  • Results are based on browser-side mathematical randomness and can differ from physical real-world odds.
  • Do not use this tool for commercial prize draws, financial decisions, or security-critical randomness.

Guides

Character type selection

Use alphanumeric IDs for general cases, hexadecimal for hash-like strings, and numeric-only IDs for order-number-like formats.

Prefix strategy

Prefixes such as user_ or order_ make IDs easier to recognize when looking at logs, test data, or database rows.

FAQ

Are the IDs guaranteed unique?

A long enough random ID is practically unique, but production databases should still enforce uniqueness.

Can I add a prefix?

Yes. Add prefixes like user_ or order_ to all generated IDs.

How is it different from UUID?

UUID is a standard 128-bit format; this tool is better when you need a custom length or prefix.

Related Tools

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