Random Number Generator

About Random Number Generator

The Random Number Generator produces one or many random integers or decimal numbers within a custom range. Set the minimum and maximum values, choose the count, and optionally enable unique mode to ensure no repeats in the output.

Useful for generating test data, creating random samples, lottery numbers, statistical simulations, and any scenario requiring unbiased random values.

Everything runs in your browser using Math.random(). Nothing is stored or transmitted.

How to Use Random Number Generator

1. 1

   Set the minimum and maximum values for your range.

2. 2

   Choose how many numbers to generate.

3. 3

   Enable Unique mode to prevent duplicate values.

4. 4

   Click Generate and copy the results.

Examples

Min: 1, Max: 49, Count: 6, Unique: on

7, 14, 23, 31, 38, 45

Min: 1, Max: 100, Count: 10

34, 7, 91, 22, 56, 3, 78, 44, 67, 19

Frequently Asked Questions

Are the numbers truly random?

They use Math.random() which is a pseudo-random number generator (PRNG). It is suitable for all non-cryptographic use cases like simulations and sampling.

Can I generate unique random numbers (no repeats)?

Yes — enable Unique mode and the generator ensures no duplicate values appear in the output.

Can I generate decimal (float) numbers?

Yes — toggle Decimal mode and set the number of decimal places you want in each result.

Can I use this to pick lottery numbers?

Yes — set your range (e.g. 1–49), enable Unique mode, set count to 6, and click Generate.

What is the maximum range supported?

JavaScript's safe integer range: up to 2^53 - 1 (about 9 quadrillion). For practical use, any reasonable range works.

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