Generate secure, truly random numbers in any range — pick lottery numbers, dice rolls, PINs, or sample data instantly.
The ToolBrainy Random Number Generator produces genuinely unpredictable random numbers within any range you choose. Whether you need one number or a thousand, unique picks or repeats allowed, integers or decimals, it delivers instantly with a single click.
Unlike simple scripts that rely on the basic Math.random method, this tool uses your browser's built-in cryptographic random generator — the crypto.getRandomValues API — for high-quality, secure randomness. Everything runs locally, and nothing is sent to a server.
Enter the minimum and maximum values, and how many numbers you want to generate.
Pick integers or decimals, and optionally turn on unique numbers or sorting.
Hit Generate to get your numbers instantly, then copy them to the clipboard with one click.
Powered by the browser's crypto random source, not a predictable pseudo-random shortcut.
Generate numbers between any two values — positive, negative, tiny, or huge.
Produce up to 1,000 numbers at once for sampling, testing, or draws.
Turn on no-repeats to draw distinct numbers — perfect for raffles and lotteries.
Choose whole numbers or decimals with up to 8 places of precision.
Copy every result to your clipboard instantly, ready to paste anywhere.
Draw unique winning numbers fairly for giveaways, raffles, and lottery picks.
Simulate dice rolls, card draws, or any tabletop game randomiser.
Pick random rows, participants, or samples for surveys and experiments.
Generate random values to fill databases, test forms, or seed applications.
Let chance decide — assign teams, pick a winner, or settle a tie.
Create random numeric PINs or codes when you need a quick throwaway.
They are cryptographically secure random numbers generated by your browser's crypto.getRandomValues API. This is far higher quality than the basic Math.random method, and suitable for draws, sampling, and general security-adjacent uses.
Yes. Turn on the "No repeats" option and every number in the result will be unique. Note that unique mode needs a range at least as large as the count you request.
You can generate up to 1,000 numbers in a single click. For unique numbers, the range between your minimum and maximum must contain at least that many whole numbers.
Yes. Switch the number type to Decimals and choose how many decimal places you want, from 1 up to 8.
No. Everything happens locally in your browser using JavaScript. No numbers, ranges, or results are ever transmitted or stored on a server.
Absolutely. Set your range, enable no-repeats for distinct picks, and generate. The secure random source makes each draw fair and unpredictable.