Unique mode
Each generated number appears at most once. Therefore, the requested quantity cannot exceed the total integers in the range.
Random Number Generator
Use our free random number generator to generate one or more random integers between your chosen inclusive minimum and maximum values. Additionally, you can choose optional unique results and ascending sorting with complete browser privacy.
Generate random integers
Both range boundaries are included. For example, a range from 1 to 10 can produce either 1 or 10.
Generator options
Use whole numbers from −1,000,000,000 to 1,000,000,000. The minimum cannot exceed the maximum.
Generate between 1 and 100 integers at a time.
Generated result
Result
No numbers generated yet
Choose your range and generate numbers.
- Minimum
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- Maximum
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- Quantity
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- Mode
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Web Crypto: random values come from the browser’s security-grade random source.
Unbiased mapping: rejection sampling prevents modulo bias across the selected range.
Local processing: this widget does not send or store your settings or results.
Understanding Your Random Number Generator Results
Every integer from the minimum through the maximum is eligible. Furthermore, duplicate values can appear when unique mode is off, whereas unique mode prevents repeats within the current generated set.
Ascending sort
In contrast, sorting changes only the display order after generation; it does not alter which values were selected.
How to Use the Random Number Generator
Create a bounded random-number set in three simple steps.
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Set the range
First, enter the lowest and highest allowed integers. Negative numbers are supported.
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Choose the quantity
Next, request up to 100 values and decide whether results must be unique or sorted.
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Generate and copy
Finally, select Generate numbers, review the result, and copy the list if needed.
How Random Integer Generation Works
Specifically, the tool requests unsigned 32-bit values from the Web Crypto API to implement rejection sampling. It rejects values beyond the largest evenly divisible limit and then maps the accepted value into the requested inclusive integer range.
Random integer = minimum + unbiased random index from 0 through (maximum − minimum)
This rejection step avoids the small distribution imbalance that can occur when a random source is mapped using remainder arithmetic alone. Consequently, every eligible integer receives an equal probability of selection.
Worked Random Number Generator Example
The minimum and maximum are both possible outcomes.
Worked example
For example, for a range from 10 to 15, there are six possible integers: 10, 11, 12, 13, 14, and 15. Requesting three unique values might produce 10, 13, and 15.
Important rules
In addition, inputs must be whole numbers. Minimum cannot exceed maximum, quantity must be 1–100, and unique quantity cannot exceed range size.
Common Random Number Generator Use Cases
Use bounded random integers for ordinary selection, practice, and testing tasks.
Games and activities
For instance, select turn order, a starting player, or a challenge number with a random integer generator.
Samples and test data
Similarly, create small integer sets for demonstrations, worksheets, and testing using a random number picker.
Everyday selection
In fact, choose numbered items or tasks easily when you generate random numbers with a number generator online.
Random Number Generator FAQs
Are the minimum and maximum included?
Yes. Specifically, both boundaries are inclusive and can appear in the generated results.
Can the generator create negative numbers?
Yes. In fact, enter a negative minimum alongside any valid maximum that is equal to or greater than it.
Why can duplicate numbers appear?
Duplicates are allowed by default because each draw is independent. However, enable Require unique numbers when every value must be different.
Is this suitable for official lotteries or regulated drawings?
No. This browser utility is not independently audited or certified for regulated gambling, legal drawings, or security tokens.
Are my settings or results uploaded?
Without exception, this widget generates and displays results inside the current browser page without sending or saving them.
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