Are negative numbers supported?

Yes. Any integer range is accepted as long as the maximum is greater than or equal to the minimum.

Why can't I generate unique numbers?

If you ask for more unique numbers than the range contains, the tool warns you. Widen the range or allow duplicates.

Is the distribution uniform?

Yes. Rejection sampling on crypto.getRandomValues() removes the modulo bias that naive implementations have.

Random Number Generator

Set a minimum, a maximum, and how many numbers you need. Choose whether repeats are allowed and whether results should be sorted. Numbers are drawn with the Web Crypto API using rejection sampling, so the distribution stays uniform.

Minimum

Maximum

How many numbers

Allow duplicates

Sort results

History

No results yet. Run the tool to see history here.

Runs in your browser

Everything happens locally on your device. Your names and lists are never uploaded, and results use your browser's secure randomness.

RandoKit is intended for casual and everyday decisions. It is not certified for regulated gambling, official lotteries, or legally binding drawings.

How to use it

1Set the minimum and maximum value.
2Choose how many numbers to generate.
3Decide whether duplicates are allowed and whether to sort the output.
4Press Generate numbers, then copy the results.

Example use cases

Picking lottery-style numbers for a friendly office pool.
Generating a random PIN-like code for a classroom game.
Choosing a random page or question number from a book.
Sampling random row numbers from a spreadsheet.