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Random Number Generator

Generate random numbers in any range. Integer or decimal, unique-only, any count up to 10,000.

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How to use Random Number Generator

  1. Set min, max, count, and decimal places.
  2. Optionally require unique values.
  3. Click Generate.

What is Random Number Generator?

Random numbers are everywhere — game design, sampling, simulations, raffles, test data. This tool uses the browser's Web Crypto API for cryptographically strong randomness, supports decimal precision, and can enforce uniqueness within a single batch.

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FAQ

Is unique mode possible for any range?
For integer mode, unique works as long as the range is at least as large as the count. For decimals, uniqueness is practical for reasonable counts but not guaranteed for tiny ranges.
How random is this?
Cryptographically secure — uses crypto.getRandomValues, the same source as session tokens and password generators.

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Author

1S
1Stop Tools"The Toolsmith"

Editorial Team at 1Stop Tools

The 1Stop Tools editorial team tests, reviews, and curates every utility on this platform. We believe tools should be free, fast, and private, with no accounts, no uploads, and no tracking. Every tool on this site runs entirely in the browser, and we test on multiple devices and browsers to ensure reliability for everyone, everywhere, on any connection.

📖 Random Number Generator on Wikipedia·Generators on Wikipedia·Random Number Generator on Britannica

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