Random Number Generator

How to generate random numbers

1. Set the minimum and maximum. Both endpoints are included, and negative integers and zero are allowed. Choose how many numbers to generate, from one to 10,000.
2. Select Unique within this result if a number should appear at most once in the batch. The count cannot exceed the number of integers in the range. More options lets you choose draw order, smallest first or largest first.
3. Select Generate and read the result. Copy numbers places one number per line on the clipboard, without group separators. If clipboard access is unavailable, select and copy the current result directly. Reset restores the initial settings and removes the batch.

Ranges, repeats and result order

An inclusive range from 1 to 6 contains six possible integers, including 1 and 6. The number of possible values is maximum minus minimum plus one. Equal endpoints contain just one possible value.

With repeats allowed, every draw uses the full range and a value may appear more than once. With Unique selected, each selected value is removed from the current batch's remaining possibilities. A later Generate starts a new batch and may include values seen before.

Sorting changes only the order of the stored batch. Returning to Draw order restores its original selection order. Editing the range, count or uniqueness removes the old batch until you generate again; changing order does not draw new numbers.

The tool uses the browser's native Web Crypto randomness source and rejection sampling to convert unsigned words into a bounded integer without remainder bias. Unique selection uses a partial shuffle. This is browser-side generation, not a request to an atmospheric-noise service.

Random integer examples

For minimum 1, maximum 6 and count 1, any integer from 1 through 6 is a valid result. For example, 4 is possible, but no particular result is promised for a click.

For minimum 1, maximum 3, count 3 and Unique on, a possible draw is 1, 3, 2. Smallest first displays 1, 2, 3 using that same batch. Count 4 is impossible when uniqueness is required for this range.

For minimum 1, maximum 10 and repeats allowed, a possible three-number batch is 7, 2, 7. Smallest first displays 2, 7, 7; sorting does not remove the repeated 7. The copied data has one number per line.

Integer selection scope

Minimum and maximum must be integers between minus one billion and plus one billion. Up to 10,000 numbers can be generated per batch. Decimal distributions, weights, excluded values, names and reproducible seeds are not supported.

The tool does not provide independent draw certification, a public draw record, passwords or cryptographic keys. Browser randomness and correct range mapping do not certify the surrounding page, device or a regulated drawing procedure. Successive batches can contain the same values.

Browser-side generation

The tool generates numbers in your browser and does not intentionally upload or save these settings or results. Copy writes only the displayed numeric list when requested. Normal site services and consent settings remain separate.