Generate random numbers with custom range, control duplicates, and choose sorting options. Perfect for games, lottery, passwords, and random selection.
Set your parameters and click Calculate to generate random numbers
Perfect for games, lottery, passwords, and random selection
A random number generator (RNG) is a tool that produces unpredictable sequences of numbers within a specified range. Random numbers are fundamental in computing, mathematics, statistics, gaming, cryptography, and various real-world applications where unpredictability and fairness are essential.
Our comprehensive random number generator allows you to customize every aspect of number generation. You can set the minimum and maximum values, control how many numbers to generate, decide whether to allow duplicate numbers, choose sorting options, and select your preferred copy format—all with instant results.
Whether you need random numbers for lottery picks, game mechanics, statistical sampling, password generation, raffle drawings, or educational purposes, this tool provides a flexible and user-friendly solution. The generator uses JavaScript's built-in random number functionality to create pseudo-random numbers that are suitable for most practical applications.
Enter the minimum and maximum values for your random numbers. For example, 1 to 100 for a percentage-style range, or 1 to 6 for a dice roll.
Specify how many random numbers you want to generate. This could be 1 for a single random number, 6 for lottery picks, or any quantity you need.
Decide whether to allow repeated numbers, choose if you want the results sorted (ascending, descending, or random), and select your preferred copy format.
Click Calculate to generate your random numbers. Use the Copy button to instantly copy the results to your clipboard in your chosen format.
The range defines the minimum and maximum values for your random numbers. The minimum value must be less than the maximum value. Common ranges include 1-6 (dice), 1-10 (simple selection), 1-100 (percentages), or any custom range you need.
Example: Range 1-10 will only generate numbers between 1 and 10 inclusive.
This option controls whether the same number can appear multiple times in your results:
Note: With "No Repeats," you cannot generate more numbers than available in your range. For example, range 1-10 can only generate up to 10 unique numbers.
Choose how you want your generated numbers displayed:
Select how numbers should be formatted when copied to clipboard:
Generate random numbers for dice rolls, card games, board games, video game mechanics, random event triggers, loot drops, and character stats. Create fair and unpredictable gameplay experiences.
Pick lottery numbers, raffle ticket winners, door prize selections, giveaway winners, and random drawings. Ensure fair selection in contests and promotional events.
Generate random samples for surveys, create random assignments for experiments, select participants for studies, and perform Monte Carlo simulations for statistical analysis.
Create random PIN codes, generate password components, produce verification codes, create one-time passwords (OTP), and generate random seeds for cryptographic applications.
Generate random numbers for math problems, create quiz question orders, randomly select students, assign random groups, and demonstrate probability concepts in statistics classes.
Make unbiased selections, choose random quality control samples, conduct A/B testing assignments, select random audit dates, and implement fair rotation schedules.
Wrong: Trying to generate 20 unique numbers in range 1-10 ❌
Correct: With "No Repeats," you can only generate up to 10 numbers in a 1-10 range. Either increase your range or allow repeats ✓
Wrong: Setting minimum = 100 and maximum = 10 ❌
Correct: Always ensure minimum is less than maximum. Use 10 to 100, not 100 to 10 ✓
Wrong: Using online random generators for high-security passwords or encryption keys ❌
Correct: For cryptographic purposes, use dedicated cryptographic random number generators (CSPRNG). This tool is perfect for games, sampling, and general use ✓
Wrong: Expecting equal distribution in small sample sizes or thinking previous results affect future generations ❌
Correct: Each generation is independent. With enough generations, you'll see roughly equal distribution across your range ✓
If you need high-quality randomness, generate multiple sets and compare. True randomness should show different patterns each time with no obvious bias toward specific numbers.
Use the Copy button to save your random numbers immediately. Once you generate new numbers, the previous ones are gone. Keep records for lottery picks or important selections.
Choose ranges that match your needs: 1-6 for dice, 0-100 for percentages, 1-52 for card deck positions, 1-1000 for large selections. Appropriate ranges make results more useful.
Sorted results are easier to check for duplicates and patterns. Use ascending sort for lottery numbers or when you need to quickly scan your results for specific values.
For reproducibility in research or games, document your range, quantity, and whether repeats were allowed. This helps validate results and recreate conditions if needed.
Computer random number generators are "pseudo-random"—they use mathematical algorithms. They're perfect for games, sampling, and general use but not for high-security cryptography.
Our generator uses JavaScript's Math.random() function, which produces pseudo-random numbers suitable for most purposes including games, sampling, and education. While not cryptographically secure, the numbers are sufficiently random for everyday applications and pass basic randomness tests.
No, each generation creates new random numbers. The generator doesn't use seeds or save previous results. If you need to preserve numbers, use the Copy button immediately after generation. For reproducible random sequences, you'd need a seeded random generator.
"No Repeats" ensures each number appears at most once (like drawing lottery balls without replacement). "Allow Repeats" lets the same number appear multiple times (like rolling dice where you can get the same number repeatedly). Use "No Repeats" for unique selections and "Allow Repeats" for independent random events.
You can use any positive integer range and generate up to thousands of numbers. However, with "No Repeats" enabled, the maximum quantity equals your range size (e.g., range 1-100 allows up to 100 unique numbers). Very large quantities may take slightly longer to generate.
Yes! Set your range to match the lottery (e.g., 1-49 for many lotteries), choose your quantity (usually 6 numbers), select "No Repeats" to ensure unique numbers, and optionally sort them ascending. The generator provides fair random selection suitable for lottery picks.
No. This generator uses pseudo-random numbers suitable for games, education, and general purposes. For security-critical applications like encryption keys or authentication tokens, use a cryptographically secure random number generator (CSPRNG) specifically designed for that purpose.
Humans are pattern-seeking and often see patterns in true randomness. Consecutive numbers, repeated digits, or clusters can occur in genuine random sequences. If you generate enough numbers over time, you'll see roughly equal distribution. Small samples may show apparent patterns that aren't statistically significant.
This generator currently produces whole numbers (integers) only. You can use negative ranges by setting a negative minimum (e.g., -10 to 10). For decimal random numbers, you'd need a specialized decimal random generator, though you could divide the results by a power of 10 manually.
The statistics show: Count (how many numbers generated), Sum (total of all numbers), Average (mean of the numbers), and Range (highest to lowest value). These help you quickly understand your generated number set and verify it meets your expectations.
For random sampling, set your range to match your population size (e.g., 1-500 for 500 participants), choose how many samples you need, and select "No Repeats" to ensure each participant can only be selected once. Use ascending sort to make it easier to identify selected participants.
Random number generation is a powerful tool with applications across gaming, research, security, education, and decision-making. Our comprehensive random number generator provides all the features you need to create random numbers quickly and easily, with full control over range, quantity, duplicates, sorting, and output format.
Whether you're selecting lottery numbers, conducting statistical research, creating game mechanics, choosing raffle winners, or teaching probability concepts, this tool offers a reliable and user-friendly solution. The intuitive interface makes it easy for anyone to generate quality random numbers in seconds.
Understanding the options available—particularly the difference between allowing and disallowing repeats, and when to use different sort orders—helps you generate exactly the random numbers you need for your specific application. The built-in statistics and detailed generation information help you verify that results meet your requirements.
Start using our Random Number Generator today for all your random selection needs. With instant generation, multiple copy formats, and comprehensive options, you'll have the perfect tool for any situation requiring unpredictable, fair random numbers. Try it now and experience how easy random number generation can be!