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Random Number Generator — Cryptographically Secure Integers

Generate cryptographically random integers — range, count, unique-only and decimal / binary / octal / hex output.

Free No signup Client-side Privacy friendly Updated

How to use

  1. 1 Set Min, Max and Count.
  2. 2 Optionally toggle Unique values to draw without replacement.
  3. 3 Pick a base (decimal / binary / octal / hex) and separator.

Why use this tool

  • Cryptographically secure — uses Web Crypto, not Math.random().
  • Unique mode is rejection-sampled — uniform across the range.
  • Output in 4 bases — drop straight into your code.
  • Pure client-side — your numbers never leave the browser.

Frequently asked questions

How are these random?

They come from <code class="font-mono text-xs">crypto.getRandomValues()</code> with unbiased uniform sampling — modulo-bias is rejected on the fly.

What is the maximum count?

Up to 10,000 numbers per click. Unique requires count ≤ range size.

Why are negative numbers allowed?

Min and Max are signed integers — you can use any whole-number range.

What is Random Number Generator?

A Random Number Generator is a tool that produces random integers in the browser using a cryptographically strong random source. It lets the user set a range and count, restrict results to unique values, and display output in decimal, binary, octal, or hexadecimal. All generation happens client-side with no signup or server involvement.

Summary

Random Number Generator is a free 创作者 utility by Zerethon Tools. Generate cryptographically random integers — range, count, unique-only and decimal / binary / octal / hex output. Runs entirely in the browser — no signup, no upload.

Category
创作者
Pricing
Free
Privacy
Browser-based
Signup
Not required

Privacy

Your data never leaves your browser unless explicitly stated. Random Number Generator runs entirely client-side — no server upload, no logging, no tracking of your input.

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