Set a range and click generate
Numbers are generated using cryptographically secure randomness
Ad Placement Slot — 728×90 Banner
Tool Information
Shortcuts
Ctrl + KEscQuick Actions
Ad Slot — 300×250
How to Use
Follow these simple steps to generate random numbers.
Set Range
Enter the minimum and maximum values for your random number range.
Configure
Choose integer or decimal, set count, and enable unique values if needed.
Generate
Click the generate button to create cryptographically secure random numbers.
Copy & Use
Copy or download the generated numbers for your project or use case.
Why Use This Generator?
The most secure and versatile random number generator online.
Cryptographically Secure
Uses crypto.getRandomValues() for true randomness, not pseudo-random.
Instant Generation
Generate up to 1000 numbers at once with lightning speed.
Integer & Decimal
Support both integer and decimal random numbers with custom precision.
Unique Values
Option to generate only unique numbers with no duplicates.
Client-Side Only
All processing happens in your browser. No data is sent to any server.
Copy & Download
Easy copy to clipboard and download as text file for later use.
Frequently Asked Questions
What is a random number generator?
A random number generator (RNG) produces numbers that cannot be predicted or reproduced. This tool uses the Web Crypto API for cryptographically secure randomness, suitable for security-sensitive applications.
Is this generator truly random?
Yes. It uses crypto.getRandomValues(), which is a cryptographically secure pseudo-random number generator (CSPRNG) built into modern browsers. This is far more secure than Math.random().
What is the difference between integer and decimal mode?
Integer mode generates whole numbers (e.g., 42), while decimal mode generates floating-point numbers with configurable precision (e.g., 42.78).
What does "Unique Only" do?
When enabled, the generator ensures no duplicate numbers appear in the output. Each generated number is guaranteed to be different from the others.
Is this tool secure for passwords or tokens?
While this tool uses secure randomness, dedicated password generators are better suited for creating passwords. This tool is ideal for lotteries, simulations, sampling, and general randomness needs.
Is my data sent to any server?
No. All number generation happens entirely in your browser using the Web Crypto API. No data is ever sent to any server. Your privacy is fully protected.