Random Number Calculator
Generate one or more random whole numbers within a specified range.
About the Random Number Calculator
Random number generation is useful for games, drawings, sampling, and picking a winner fairly — this calculator generates one or more random whole numbers within any range you specify.
How It Works
The calculator uses a uniform random number generator to pick a value between your minimum and maximum (inclusive), rounding to a whole number, and repeats this for as many numbers as you request.
Random Number = floor(random() × (Max − Min + 1)) + Min, repeated for the requested count.
Example
Scenario: Generating 1 random number between 1 and 100.
Result: A single random whole number somewhere between 1 and 100, inclusive.
Assumptions & Limitations
- Each generated number is independent of the others — repeats are possible when generating multiple numbers unless you specifically need unique values.
- Uses a uniform distribution, meaning every number in the range has an equal chance of being selected.
- This is a standard pseudo-random generator suitable for games and informal drawings, not a cryptographically secure random number generator for security purposes.
- Does not currently support excluding duplicate values when generating multiple numbers.
Frequently Asked Questions
Can the same number appear twice when generating multiple numbers?
Yes — each number is generated independently, so duplicates are possible unless you manually discard repeats, similar to rolling a die multiple times.
Is this suitable for a real lottery or giveaway?
For informal drawings and giveaways this works well, but official lotteries and high-stakes drawings typically use certified random number generation processes with additional auditing.
Can the minimum and maximum be negative?
Yes — the calculator works with negative ranges as well, as long as the minimum is less than or equal to the maximum.