Set your minimum and maximum values and click generate. You’ll get a random whole number in that range.
What is this random number generator used for?
A random number generator is useful anytime you want an unbiased, quick choice. Some common uses include:
- Picking a winner from a list of people or entries.
- Choosing a random task, workout, or decision.
- Simple classroom or office activities.
- Basic testing, sampling, or practicing probability concepts.
How this tool works
When you enter a minimum and maximum value, this tool:
- Checks that both values are valid and that the maximum is not less than the minimum.
- Uses JavaScript’s
Math.random()to generate a random decimal between 0 and 1. - Stretches that into your chosen range and rounds it to a whole number.
The formula looks like this (in plain language):
random integer = floor( random() × (max − min + 1) ) + min
Is this randomness “perfect”?
This is a basic pseudo-random generator that runs in your browser. It’s more than enough for everyday use, games, or casual decisions, but it’s not meant for cryptography or serious security-sensitive applications.