Random Number Generator
Generate random whole numbers from a custom range, with optional uniqueness and ascending order. The calculation happens in your browser.
Last reviewed: July 15, 2026
Generate random integers
Choose an inclusive minimum and maximum, then decide how many numbers to draw.
Generated numbers
Enter a range and select Generate numbers.
Ready.
What this generator does
The generator selects whole numbers from the minimum through the maximum, including both endpoints. It supports negative integers, a single result or multiple results, optional duplicate prevention, and optional ascending order. If the minimum is greater than the maximum, the tool swaps them before drawing.
The current safety limits are 100 results and a range containing no more than 1,000,000 integers. Those limits keep accidental requests responsive on phones and prevent an impossible unique-number request from looping.
How the random draw works
- The page checks that the minimum, maximum, and quantity are safe whole numbers.
- When available, the browser's
crypto.getRandomValues()interface supplies unsigned 32-bit values. - Rejection sampling discards values outside the largest evenly divisible bucket for the requested range. This avoids the bias created by applying a remainder operation to every possible 32-bit value.
- Each accepted value is mapped to the inclusive range. When uniqueness is selected, a repeated draw is ignored until the requested count is reached.
- Sorting changes only the displayed order; it does not redraw the numbers.
If Web Crypto is unavailable or throws an error, the page falls back to Math.random() and identifies that fallback beside the form. The fallback is pseudorandom and is not suitable for security, regulated drawings, or anything of material value. See the broader MyLuckyNumber methodology for source links and limitations.
Worked example
Suppose the minimum is 1, the maximum is 10, the quantity is 3, and both uniqueness and sorting are selected. One possible result is 2, 5, 9. A second click will usually produce a different valid combination. Every displayed value must be between 1 and 10, no value may appear twice, and the final list must be in ascending order.
The example demonstrates the settings; it is not a result that the generator tries to reproduce.
Privacy and storage
The minimum, maximum, quantity, options, and generated numbers are processed in the browser. This page does not store the result in MyLuckyNumber history or intentionally send the form values to a MyLuckyNumber server. The shared site theme preference can still be read from local browser storage. See the Privacy Policy for hosting and third-party-service details.
Limits and appropriate use
- A random result is not inherently lucky and does not predict a future event.
- The output is not proof that a drawing was fair, audited, or independently witnessed.
- Do not use the page to create passwords, cryptographic keys, authentication tokens, or regulated contest results.
- Lottery-style use does not improve the mathematical probability of winning. Review Responsible Play before using generated values for a real-money game.