Random Number Generator
Generate one or many random numbers within any range you choose. Uses your browser's cryptographically secure random number generator for genuinely unbiased results — no server involved.
How to Use the Random Number Generator
- Enter the minimum and maximum values that define your range (e.g., 1 to 100).
- Enter how many random numbers you'd like generated, from 1 up to 20 at once.
- Check "No duplicate numbers" if every generated number must be unique — the tool will warn you if your range is too small for that many unique values.
- Click "Generate" to instantly produce your numbers.
- Click "Copy All" to copy the full result list to your clipboard.
Why Use This Tool?
How random are these numbers really?
This tool uses crypto.getRandomValues, the Web Crypto API's cryptographically secure random number source, rather than the simpler and more predictable Math.random(). That means the output is suitable for anything from casual games and giveaways to raffle draws and lottery-style picks where fairness matters.
What happens if I ask for more unique numbers than my range allows?
If "No duplicate numbers" is checked and your requested quantity is larger than the number of possible values in your range (for example, asking for 20 unique numbers between 1 and 10), the tool will show a friendly warning and won't generate an impossible result. Simply widen your range or reduce the quantity.
Is my data or usage tracked?
No. All numbers are generated locally in your browser using JavaScript. Nothing you enter is transmitted to a server, logged, or stored anywhere — refreshing the page clears everything.
What is this tool typically used for?
Common uses include picking lottery-style numbers, generating test data for spreadsheets or code, running fair random draws for prizes, choosing random sample sizes for research, or simply settling a decision when you need an unbiased number. The min/max range and quantity controls make it flexible enough for nearly any everyday randomization task.