Free Random Number Generator Online
Generate random numbers within any range with customizable options
Flexible Random Generation
Customizable random numbers for any purpose
Set any minimum and maximum value to define your number range.
Generate multiple random numbers at once with optional unique-only filtering to prevent duplicates.
View a history of previously generated numbers for reference and comparison.
About Our Random Number Generator
Our free random number generator produces cryptographically generated random numbers within any range you specify. Generate single or multiple numbers with options for unique values and sorted output. Perfect for games, lotteries, sampling, and decision making.
Frequently Asked Questions
Are the numbers truly random?
The generator uses the Web Crypto API built into your browser, which provides cryptographically strong random numbers.
These numbers are suitable for games, lotteries, random sampling, and any application requiring high-quality randomness.
The randomness is generated locally in your browser with no server involvement.
Can I generate unique numbers only?
Yes. Enable the Unique Only option and the generator will ensure no duplicate values appear in the results.
Note that the number of unique values you can generate is limited by the size of your range. You cannot generate 10 unique numbers from a range of 1 to 5.
This feature is ideal for lottery draws, random team assignments, and sampling without replacement.
What is the maximum range?
The generator supports any integer range within the safe integer limits of JavaScript, which is plus or minus 9 quadrillion.
For practical purposes, any range you need for games, lotteries, or random selection is fully supported.
Both positive and negative numbers are supported in the range.
What is the history feature?
The history section keeps a record of all numbers generated during your current session so you can review previous results.
History is stored only in your browser and is cleared when you refresh the page.
This is useful for tracking multiple rounds of random selection.