Random Number Generator
Generate true random integers within custom bounds with duplicate prevention, sorting, and statistical metrics.
What is the Random Number Generator?
The Membuat Random Number Generator produces statistically uniform, unbiased random integers within any custom interval [Min, Max]. It offers comprehensive options for generating single numbers or batches of up to 100 numbers, with controls for unique numbers (no duplicate values), sorting (ascending/descending), and summary statistics including sum, arithmetic mean, minimum, and maximum.
How to Use This Tool
- Enter your Minimum (Min) and Maximum (Max) integer bounds.
- Specify how many numbers you wish to generate (from 1 to 100).
- Check "Unique numbers only" if you need distinct values without duplicates (e.g. for lottery numbers or raffle drawings).
- Select your preferred sort order (Ascending, Descending, or Generation Order).
- Click "Generate Numbers" to view the results in visual bubbles and summary stats.
Examples & Use Cases
Standard 6/49 Lottery Pick
Min: 1 | Max: 49 | Quantity: 6 | Unique: Yes | Sort: Ascending
Tabletop Gaming Dice Roll (3d20)
Min: 1 | Max: 20 | Quantity: 3 | Unique: No
Formula & Technical Specifications
Random values are drawn using window.crypto.getRandomValues() to eliminate pseudo-random cycle patterns. Rejection sampling is employed to eliminate modulo bias, ensuring every integer in the selected range has an identical, mathematically equal probability of selection.
Limitations, Edge Cases & Best Practices
If "Unique numbers only" is checked, the requested quantity cannot exceed the total number of integers in the interval (Max - Min + 1).
Privacy & Client-Side Execution
Frequently Asked Questions
What is modulo bias and how does this tool prevent it?
Modulo bias occurs when mapping a large integer range onto a smaller interval, causing lower numbers to appear more frequently. We use cryptographic rejection sampling to guarantee a perfectly uniform distribution across your entire interval.