Random Number Generator
Generate random numbers instantly with custom ranges. Perfect for games, raffles, passwords, simulations, and statistical sampling. Fast, free, and completely private.
Create single or multiple random numbers with options for duplicates, custom ranges, and instant results. No registration required.
Why Use Our Random Number Generator?
Instant Results
Generate random numbers in milliseconds. No waiting, no loading times. All calculations happen instantly in your browser.
100% Private
Your numbers are generated locally in your browser. We don't store, track, or transmit any data. Complete privacy guaranteed.
Flexible Options
Customize your range, generate multiple numbers, allow or prevent duplicates. Perfect for any use case from dice rolls to lottery numbers.
How to Generate Random Numbers
Set Your Range
Enter the minimum and maximum values for your random numbers. For example, 1 to 100 for numbers between 1 and 100.
Choose Quantity
Specify how many random numbers you want to generate. You can generate anywhere from 1 to thousands of numbers.
Configure Duplicates
Check "Allow Duplicates" if the same number can appear multiple times, or uncheck it to ensure all numbers are unique.
Generate & Copy
Click the "Generate" button to create your random numbers. Use the "Copy" button to easily copy all results to your clipboard.
Curious about how RNG works?
Read our Ultimate Guide to Random Number Generation →Popular Use Cases for Random Numbers
🎲 Games & Entertainment
Simulate dice rolls, card shuffles, or create random game events. Perfect for board games, RPGs, and online gaming.
🎟️ Raffles & Lotteries
Select random winners for contests, giveaways, or raffles. Generate lottery numbers or pick random participants fairly.
📊 Statistical Sampling
Create random samples for surveys, research, or data analysis. Essential for unbiased statistical studies and experiments.
🔐 Password Generation
Generate random numbers as part of secure passwords or PINs. Combine with letters for strong, unpredictable credentials.
🧪 Simulations & Testing
Run Monte Carlo simulations, A/B tests, or random scenario testing. Useful for software development and scientific modeling.
👥 Random Selection
Randomly assign teams, select presentation orders, or choose volunteers. Fair and unbiased selection for any group activity.
💡 Pro Tips
For dice rolls: Set min to 1 and max to 6 (or 20 for D20, etc.)
For lottery numbers: Disable duplicates to ensure unique numbers
For coin flips: Set min to 0 and max to 1 (0 = tails, 1 = heads)
For percentage: Set min to 0 and max to 100 for random percentages
For negative numbers: Use negative values for min (e.g., -100 to 100)
Frequently Asked Questions
How does the random number generator work?
Our random number generator uses JavaScript's Math.random() function, which generates pseudo-random numbers. You set a minimum and maximum value, choose how many numbers you want, and optionally allow or prevent duplicates. The generator then produces random integers within your specified range.
What is the difference between allowing and not allowing duplicates?
When duplicates are allowed, the same number can appear multiple times in your results. When duplicates are not allowed, each number in the range can only appear once. For example, generating 5 numbers between 1-10 with no duplicates ensures all 5 numbers will be different.
Is this a true random number generator?
This is a pseudo-random number generator (PRNG), which means it uses an algorithm to generate numbers that appear random. For most everyday uses like games, raffles, or simulations, this is perfectly adequate. For cryptographic purposes requiring true randomness, specialized hardware random number generators are recommended.
What can I use random numbers for?
Random numbers have countless applications: running raffles and lotteries, selecting winners, creating game mechanics (dice rolls, card shuffles), statistical sampling, password generation, simulations, A/B testing, random team assignments, and much more.
Can I generate negative random numbers?
Yes! You can set the minimum value to any negative number. For example, setting min to -100 and max to 100 will generate random numbers in that range, including negative values, zero, and positive values.
What is the maximum quantity of numbers I can generate?
While there's no hard limit, generating very large quantities (thousands) may slow down your browser. If you have duplicates disabled, the maximum quantity is limited by your range size (max - min + 1).
How do I generate a random number between 1 and 10?
Simply set the minimum value to 1, the maximum value to 10, set quantity to 1, and click Generate. You'll get a random number between 1 and 10 (inclusive).
Can I use this for lottery number generation?
Yes! Set your range to match your lottery (e.g., 1-49 for many lotteries), set the quantity to how many numbers you need, disable duplicates, and generate. This gives you a random selection of unique lottery numbers.
Is my data saved or tracked?
No. All random number generation happens entirely in your browser. We don't store, track, or transmit any of the numbers you generate. Your data is completely private.
How do I simulate a dice roll?
For a standard 6-sided die, set min to 1, max to 6, and quantity to 1. For multiple dice, increase the quantity. For other dice types, adjust the max value (e.g., max 20 for a 20-sided die).