How the random number generator works
Set a minimum and maximum, choose how many numbers you want, and decide whether duplicates are allowed, then generate. The tool draws numbers in your range using your browser secure randomness and shows them along with their count, sum, lowest, and highest values. Everything happens locally in your browser.
With or without duplicates
Allowing duplicates means each number is drawn independently, so the same value can appear more than once, like rolling a die repeatedly. Choosing unique gives a draw with no repeats, like pulling raffle tickets, which is what you want for lotteries, random sampling, or picking distinct winners. Unique draws need a range at least as large as the count.
Common uses
Use it to pick lottery style numbers, choose random samples for a study, assign random order or groups, run giveaways, or settle decisions impartially. The summary stats are handy when you are generating numbers for a simulation or demonstration and want a quick feel for the spread.
How random is it
When your browser supports it, the generator uses a cryptographically secure source, which has no practical pattern and is far better than typical pseudo random functions for fairness. It is excellent for everyday randomness and games, though formal lotteries and security systems use their own certified hardware sources.
Frequently asked questions
Can I generate numbers without repeats? Yes, choose the unique option; the range must be at least as large as the count.
Is it truly random? It uses your browser secure random source, which is fair and unpredictable for everyday use.
Can I pick lottery numbers? Yes, set your range and count and choose unique for a no repeats draw.
Related tools: Dice Roller, Coin Flip, Random Picker.