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Generate cryptographically secure random numbers with customizable ranges and options. Choose between integers or decimals, set min/max values, and generate multiple numbers at once. Perfect for games, simulations, statistical sampling, and testing.

Random Number Generator

Generate 1-1000 numbers at once
Privacy: All random numbers are generated locally in your browser using the Web Crypto API. No data is sent to any server or stored.

How to Use

  1. Set the minimum and maximum values for your random number range
  2. Choose between integer or decimal number type
  3. For decimals, specify the number of decimal places (1-10)
  4. Click "Generate Number" to create a single random number
  5. For multiple numbers, enter the count and click "Generate Multiple"
  6. Uncheck "Allow Duplicates" to ensure all generated numbers are unique
  7. Use the copy button to copy numbers to your clipboard
  8. Export bulk numbers as CSV for use in spreadsheets

Common Uses:

  • Gaming: Generate random rolls for dice, loot drops, or game mechanics
  • Simulations: Create random data for Monte Carlo simulations and modeling
  • Statistical Sampling: Generate random samples for research and analysis
  • Lottery & Raffles: Pick random numbers for contests and drawings
  • Testing: Create test data with random values for software development
  • Decision Making: Use random numbers to make unbiased choices

Frequently Asked Questions

How random are the generated numbers?

The numbers are generated using the Web Crypto API's cryptographically secure random number generator (crypto.getRandomValues()), which provides high-quality randomness suitable for security-sensitive applications.

What's the difference between integer and decimal?

Integers are whole numbers without decimal points (e.g., 1, 42, 100), while decimals include fractional parts (e.g., 1.5, 42.37, 99.99). Choose based on whether you need precision or whole numbers only.

Can I generate negative numbers?

Yes! Simply set your minimum value to a negative number. For example, set min to -100 and max to 100 to generate numbers in that range.

What happens if I disable "Allow Duplicates"?

When disabled, each generated number in the bulk generation will be unique. Note that this limits the maximum count to the range size (max - min + 1 for integers). If you request more numbers than possible unique values, you'll receive only the maximum possible unique numbers.

Can I use this for lottery numbers?

Yes! Set your range (e.g., 1-49 for many lotteries), disable duplicates, and generate the number of picks you need. The cryptographic randomness ensures fair and unbiased number selection.

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