Generate random numbers in any range — unique or repeating, whole or decimal — using the browser’s cryptographic RNG for unbiased results. All in your browser.
Each number is drawn from crypto.getRandomValues — the browser’s cryptographically secure random source — and mapped into your range with rejection sampling, so every value is equally likely (no modulo bias). Whole numbers use the range directly; decimals pick within it to the number of places you set. Unique guarantees no repeats (the count can’t exceed the range). Everything runs on your device.
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