Random Number Generator

Pick one or many random numbers in any range, with an option for no repeats — cryptographically strong and generated in your browser.

Truly random, in your control

Pick a raffle winner, roll up stats, choose a lottery line, or sample rows for a test — set the range and how many numbers you need. Turn on no repeats to draw unique numbers (like a lottery), and the values come from your browser's cryptographically secure generator, not a predictable pseudo-random sequence.

Private by design. Numbers are generated on your device; nothing is uploaded.

Frequently asked questions

Are the numbers truly random?

They come from the browser's cryptographically secure random generator, which is far less predictable than a typical pseudo-random function.

What does no repeats do?

It draws unique numbers with no duplicates, like a lottery draw. The count cannot exceed the size of the range.

Is anything uploaded?

No. Generation happens entirely in your browser.

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