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Random Number Generator

Generate random numbers with custom ranges and settings

Last Generated: -
Total Numbers Generated: 0

Random Number Generator Tool

Our free random number generator creates truly random numbers within any range you specify. Whether you need numbers for games, statistical sampling, cryptography, or any other purpose, our tool provides unbiased and unpredictable results.

How to Generate Random Numbers

  1. Set your minimum and maximum values to define the range
  2. Choose how many numbers you want to generate (up to 1000 at once)
  3. Select whether you want decimal numbers or only integers
  4. Choose whether numbers should be unique (no duplicates)
  5. Click "Generate Numbers" to create your random numbers
  6. Copy individual numbers or the entire set with one click

Common Uses for Random Numbers

Games & Lotteries

Generate random picks for games or lottery numbers

Statistical Sampling

Select random samples for research or surveys

Cryptography

Create random keys or passwords

Simulations

Run Monte Carlo simulations or modeling

Random Selection

Choose random winners or assign random groups

Game Development

Create random events or procedural content

About Randomness

Our generator uses JavaScript's Math.random() function which provides pseudo-random numbers that are sufficient for most purposes. While not cryptographically secure (for which you'd need Web Crypto API), the numbers are:

  • Uniformly distributed: Each number in the range has equal probability
  • Unpredictable: No discernible pattern in generated numbers
  • Statistically random: Passes basic tests for randomness

Frequently Asked Questions

Our generator uses JavaScript's Math.random() which produces pseudo-random numbers that are statistically random for most purposes. For cryptographic security, you would need a different approach using the Web Crypto API.

The generator can handle any range from -9,007,199,254,740,991 to 9,007,199,254,740,991 (the limits of JavaScript numbers). However, for practical purposes, ranges up to 1,000,000 work best.

When "Unique Numbers" is checked, the generator ensures no duplicates appear in your results. Note that with small ranges and large quantities, it may be impossible to generate unique numbers (like getting 101 unique numbers between 1-100).