What Is This Tool?
A random number generator picks numbers from a range where every value has an equal chance. People use it to draw raffle and giveaway winners, assign teams randomly, pick lottery numbers, create random samples for surveys, roll oversized dice for games, and make unbiased decisions.
Quality matters more than it looks: naive generators have subtle bias toward parts of the range. This tool uses the browser's cryptographic randomness with rejection sampling, the textbook method for perfectly uniform results — every number is exactly as likely as every other.
Why Use It?
- Any range, including negative numbers, up to 10,000 numbers at once.
- "No duplicates" mode for fair draws — like pulling numbered balls from a bag.
- Optional sorting for readable lists.
- Provably fair: cryptographically secure and bias-free, suitable for real giveaways.
- Private and instant — generated on your device, nothing logged.
How to Use
- Set the minimum and maximum (both included).
- Choose how many numbers you need.
- Check "no duplicates" for a draw without repeats, and "sort" if you want an ordered list.
- Click "Generate Numbers" — a single number shows large, lists show one per line.
- Click "Copy All" for lists.
Example
Input
Min: 1, Max: 50, Count: 6, no duplicates, sortedOutput
3
11
24
30
42
49A classic lottery-style draw: six unique numbers from 1–50, sorted.
Frequently Asked Questions
Are the numbers truly random?
They come from crypto.getRandomValues(), your operating system's cryptographic randomness source, applied with rejection sampling to remove range bias. For draws, games and sampling this is as fair as it gets.
Are min and max included in the results?
Yes, both ends are inclusive. A range of 1–10 can produce both 1 and 10.
What does "no duplicates" do exactly?
Each number in the range can appear at most once, like drawing numbered balls from a bag without putting them back. The count therefore can't exceed the range size — the tool tells you if it does.
Can I use this to pick a giveaway winner fairly?
Yes. Number your entrants 1 to N, generate one number in that range, and the result is an unbiased pick. For multiple winners, use "no duplicates" so nobody wins twice.
Why did the same number appear twice in my list?
Without "no duplicates", each draw is independent — repeats are normal and actually proof of real randomness (dice can roll the same value twice). Enable "no duplicates" if you need each number once.