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Random Number Generator
Generate random numbers within a range with duplicates or unique values.
How to Use the Random Number Generator
- Set the minimum and maximum values.
- Choose how many numbers to generate.
- Enable Unique to prevent duplicates.
- Click Generate to get your random numbers.
Formula & Method
Uses Math.random() to generate integers in the specified range. Unique mode prevents duplicates by rejection sampling.
Examples
Try different values to see how this calculator handles various real-world scenarios.
Frequently Asked Questions
Is this truly random?
It uses Math.random() which is pseudorandom; sufficient for most purposes.
Can I generate negative numbers?
Yes, set the minimum value to a negative number.
What is the maximum range?
JavaScript numbers can handle values up to about 9 quadrillion safely.
People Also Ask
How accurate is this calculator?
Our calculators use standard mathematical formulas and provide accurate results.
Can I use this on my phone?
Yes, all tools are fully responsive and work on any device.