Random Number Generator
Generate random numbers in any range — with optional unique values.
Set a minimum, a maximum, and how many numbers you want, then generate. Turn on “unique” for draws without repeats — handy for raffles, picking winners, or sampling.
Numbers are generated locally in your browser using the device's built-in randomness; nothing is sent anywhere.
100% freeNo sign-up No data leaves your browserPrivacy
Formula
Inclusive range
min ≤ result ≤ max
Every whole number from the minimum to the maximum (both included) is equally likely.
Unique draw
count ≤ (max − min + 1)
Without repeats, you can draw at most as many numbers as there are values in the range.
How to use the random number generator
- 1Set the minimum and maximum of the range.
- 2Choose how many numbers to generate, and whether they must be unique.
- 3Press Generate — copy the results when you like them.
Examples
| Example | Input | Result |
|---|---|---|
| Dice roll | 1 to 6, one number | e.g. 4 |
| Lottery picks | 1 to 49, 6 unique | 6 distinct numbers |
| Coin flip | 0 to 1 | 0 or 1 |
How the numbers are generated
The generator draws whole numbers uniformly from the range you set, so each value between the minimum and maximum (inclusive) is equally likely. With “unique” enabled, it shuffles the available numbers and takes the first few, guaranteeing no repeats — like drawing tickets from a hat.
This uses the browser's standard pseudo-random generator. It is great for games, picking winners, sampling, and everyday randomness, but it is not a cryptographically secure source and should not be used to generate passwords or security keys.
Common uses
Roll dice (1–6), flip between options, pick a raffle winner from a list of ticket numbers, choose a random sample of rows, or settle a decision fairly. Use the unique option whenever the same number shouldn't come up twice.
Frequently asked questions
Are the numbers truly random?
They use the browser's built-in pseudo-random generator, which is statistically random and ideal for games and everyday use, but not cryptographically secure.
Can I generate numbers without repeats?
Yes. Enable the “unique” option to draw distinct numbers. You can draw at most as many as there are values in the range.
Is the range inclusive?
Yes. Both the minimum and the maximum can appear in the results.
Does anything leave my device?
No. Numbers are generated locally in your browser.
Embed this calculator
Add the Random Number Generator to your own website — free. Copy and paste this snippet:
<iframe src="https://numvella.com/embed/random-number-generator" width="100%" height="460" style="border:1px solid #e2e8f0;border-radius:12px" title="Random Number Generator — Numvella" loading="lazy"></iframe>