Random Number Generator
Generate random numbers in any range
How to Use Random Number Generator
- 1
Set the minimum and maximum values for your range.
- 2
Choose how many random numbers to generate.
- 3
Click Generate and copy the results.
About Random Number Generator
Generate random numbers online free. Set a min and max range, generate multiple numbers at once, and optionally ensure all numbers are unique. Instant results.
Best Use Cases
- •Picking a random winner from a numbered list of competition entries
- •Generating random numbers for a math lesson or statistics exercise
- •Simulating dice rolls or random draws for a game
- •Selecting a random sample from a dataset
- •Generating test data with random numeric values
Examples
Raffle draw
Set min to 1 and max to 500 (total entries). Click generate. The result is your winner's number.
Dice roll
Set min to 1 and max to 6 for a standard die. Set min to 1 and max to 20 for a D20.
Random percentage
Set min to 0 and max to 100 to generate a random percentage value for testing.
Common Mistakes to Avoid
- !Using a simple online random number tool for cryptographic or security purposes - use a cryptographically secure generator for those cases
- !Generating a single number and assuming it is representative - for statistical purposes, generate a large sample
Limitations
- –The generator uses the browser's Math.random(), which is pseudo-random and suitable for games, sampling, and general use, but not for cryptographic security
- –There is no built-in guarantee against duplicate numbers when generating multiple values - if you need a unique set, generate more than you need and remove duplicates
Privacy
Number generation happens entirely in your browser. Nothing is sent to any server.
Frequently Asked Questions
Are the numbers truly random?
The numbers use JavaScript's Math.random(), which is a pseudo-random number generator (PRNG). It's random enough for games, decisions, and sampling but not suitable for cryptographic use.
Can I generate unique numbers?
Yes - enable the 'Unique' toggle to ensure no number appears twice in the results. The count must be within the size of your range.