Free online random number generator to generate single or multiple random numbers within any range. Set min, max, and quantity. Browser-based, no login, instant results.
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Choosing a random winner, making a decision, running a raffle, or testing an application all call for numbers that aren't hand-picked or predictable to the user. This generates them using Math.random(), the standard randomness function built into every browser - well-suited to games, raffles, and everyday decisions, though it isn't a cryptographically secure generator and shouldn't be relied on for passwords, PINs, or other security-sensitive purposes.
Generate one or more random numbers within any range - from a simple 1–10 pick to generating 100 numbers between 1 and 1,000,000 - using JavaScript's built-in Math.random() function. Optionally prevent duplicate numbers in a single draw.
Enter the minimum and maximum values for your random numbers.
Choose how many random numbers you want to generate.
Click generate to produce random numbers within your range.
Copy individual numbers or click Copy All to grab the full list.
Set Minimum and Maximum, choose a Quantity from 1 to 100, and click Generate to produce that many random integers within the range.
Set Quantity to 1 to get one large, prominently displayed number - useful for picking a single winner or making a one-off decision.
Uncheck Allow duplicate numbers before generating to draw unique numbers only, as you would for a raffle - if you request more numbers than the range contains, the tool returns as many unique numbers as the range allows.
Click any individual number to copy it, or use Copy All to copy the entire list as a comma-separated string.
Enter a negative Minimum value to generate numbers that span into negative territory, such as a range from -50 to 50.
Best For
Input
Minimum 1, Maximum 49, Quantity 5, Allow duplicates uncheckedOne Possible Result
5 unique numbers, e.g. 7, 14, 22, 35, 41 (each generation produces a different result)With duplicates disallowed, the tool builds a pool of all 49 possible numbers and draws 5 from it without replacement, so no number repeats within that result.
Input
Minimum -10, Maximum 10, Quantity 1One Possible Result
A single integer from -10 to 10, e.g. -3 (displayed as one large number)With Quantity set to 1, the result displays as a single large number instead of a grid, and negative ranges work exactly the same as positive ones.
Number your entries, then generate one random number in that range to pick the winner.
Uncheck Allow duplicate numbers and set the quantity you need to draw a unique set of numbers.
Generate a batch of random integers within a defined range to use as sample or test data.
Problem
Solution
This tool uses JavaScript's Math.random(), a standard pseudo-random generator - it is not suitable for passwords, PINs, or other security-sensitive purposes.
Problem
Solution
With duplicates disallowed, a range of 1-10 can only produce 10 unique numbers - requesting a higher Quantity returns as many unique numbers as the range actually contains, not the full amount requested.
Problem
Solution
The tool shows an error message and will not generate numbers if Minimum is greater than Maximum - correct the range before generating.
Problem
Solution
Results are always whole numbers - non-integer Minimum or Maximum values are rounded toward the inside of the range before generating.
Leave Allow duplicate numbers checked for general random picks, but uncheck it whenever every result needs to be a distinct number.
Setting Quantity to 1 displays one large, clearly readable number - useful when you just need a single random choice.
Copy All grabs every generated number as a single comma-separated list instead of copying numbers one at a time.
For anything security-sensitive, use a generator built on a cryptographically secure random source instead of this tool.
This tool uses JavaScript's Math.random(), a standard pseudo-random generator - it is not appropriate for passwords, PINs, security tokens, or any use case where unpredictability must be guaranteed.
Results are always whole numbers - there is no option to generate decimal or fractional random values.
You can generate at most 100 numbers in a single click, regardless of how large the range is.
With duplicates disallowed, the tool can never return more unique numbers than the range actually contains - it silently returns fewer numbers than requested in that case rather than showing an error.
Each generation is a one-time result on the page - previous results aren't saved or logged anywhere.
Both use the same Math.random()-based generation - only the selection method changes.
| Duplicates Allowed (Default) | No Duplicates | |
|---|---|---|
| How numbers are chosen | Each number picked independently - repeats are possible | Numbers drawn from a shrinking pool - no repeats within one result |
| Best for | General random picks, decisions, test data | Raffles, lotteries, anywhere every result must be distinct |
| Max results possible | Up to 100, regardless of range size | Up to 100, but never more than the range contains |
Which should you use?
Use duplicates-allowed mode for everyday random picks, and switch to no-duplicates whenever the numbers you generate need to represent distinct items or people.
The most common question is whether these numbers are truly random. This tool uses JavaScript's built-in Math.random() function, a standard pseudo-random number generator (PRNG) - it produces numbers that are unpredictable and well-distributed enough for games, raffles, and everyday decisions, but it is not a cryptographically secure generator. For passwords, PINs, or other security-sensitive purposes, this isn't the right tool - use a generator designed specifically for cryptographic security instead.
The tool uses JavaScript's built-in Math.random() function to produce random integers in your chosen range. This is a standard pseudo-random generator well-suited to games, raffles, and everyday decisions - it isn't a cryptographically secure source, so it shouldn't be used for passwords, PINs, or other security-sensitive purposes.
Yes. Set the minimum value to a negative number and the generator will produce random integers within that range.
You can generate up to 100 random numbers in a single click and copy them all to your clipboard.
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