Loading tool…
Loading tool…
Generate unique or repeatable random integers in any range.
Was this tool useful?
Does this number generator upload anything to the internet?
No. All randomness is generated locally using crypto.getRandomValues when available.
Why must the minimum be less than or equal to the maximum?
A valid numeric range is required to ensure meaningful random number generation.
How many numbers can I generate at once?
You can generate between 1 and 500 numbers per batch. Higher values may slow down the browser.
What does 'No duplicates' do?
It prevents the tool from generating repeat values. If the requested count exceeds the available range, the tool will show an error.
Why do decimal numbers appear when I choose floating-point mode?
Floating mode generates numbers with 2–6 random decimal places, using full-precision randomness.
Why does the tool warn about large ranges?
Extremely large numeric ranges (billions) may slow down uniqueness checks when duplicates are disabled.