✓ Runs locally in your browser

Secure Random Number Generator

Create one or many cryptographically random integers with optional uniqueness.

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About this tool

What is Secure Random Number Generator?

Secure Random Number Generator creates unbiased integers with browser-provided cryptographic randomness.

Three simple steps

How to use Secure Random Number Generator

  1. 01

    Set the inclusive minimum, maximum and number of results.

  2. 02

    Enable uniqueness when repeated values are not allowed.

  3. 03

    Generate and copy the resulting integer list.

Common questions

Secure Random Number Generator FAQ

Is this the same as Math.random?

No. It uses cryptographic browser randomness and rejection sampling to avoid modulo bias.

Is Secure Random Number Generator private to use?

Yes. Number parsing, statistics, conversions and random generation all run locally in your browser.