Set inclusive lower and upper bounds, how many numbers you want, and optionally require unique picks. Unique mode shuffles the full range and takes the first N values, so it is safe when N is less than or equal to the number of integers in the range. Large batches are capped for browser performance.
No. It uses Math.random() for casual use. Do not use for passwords, keys, or security tokens.
When enabled, the tool shuffles the inclusive integer range and takes the first N values, so N cannot exceed the count of integers in the range.
Both low and high are included in the pool of possible values.
Very large ranges or counts may be slow; the UI caps count for responsiveness.
Sequences are not seeded for reproducible science runs; refresh gives new draws.
Runs locally in your browser.