Random Number Generator

Generate cryptographically secure random numbers within any range. Supports multiple numbers, unique values, and negative ranges.

Generate cryptographically secure random numbers within any range

Results (1)
Numbers are generated using the Web Crypto API (crypto.getRandomValues) for cryptographic security. No data is sent to any server.

How to Use This Tool

  1. 1

    Set the range

    Enter the minimum and maximum values for your random number range. Both positive and negative integers are supported.

  2. 2

    Choose how many numbers

    Specify how many random numbers to generate (1 to 1000). Enable 'Unique Numbers Only' to prevent duplicates.

  3. 3

    Generate the numbers

    Click the Generate button to create your random numbers. The results appear instantly below.

  4. 4

    Copy the results

    Click any individual number to copy it, or use 'Copy All' to copy the entire list (one number per line).

Frequently Asked Questions

Are the numbers truly random?
Yes. This tool uses the Web Crypto API (crypto.getRandomValues), which provides cryptographically secure random numbers suitable for security-sensitive applications.
What is 'Unique Numbers Only'?
When enabled, each generated number will be different — no duplicates. If you request more unique numbers than the range allows (e.g., 10 unique numbers from 1-5), you'll get as many as possible.
Can I generate negative numbers?
Yes. Enter negative values for minimum and/or maximum. For example, -100 to 100 will generate numbers anywhere in that range.
Is there a limit to how many numbers I can generate?
You can generate up to 1,000 numbers at once, and the range can span up to 1 billion values. This covers virtually all practical use cases.