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.

Cryptographically secure — uses crypto.getRandomValues, the same source as session tokens and password generators.

Random Number Generator

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

Min Max Count Decimals Unique only

Numbers

How to use Random Number Generator

Set min, max, count, and decimal places.
Optionally require unique values.
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.

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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