Random Number Generator
Generate secure random numbers instantly with our Random Number Generator. Set custom ranges, allow/prevent repeats, and get integers or decimals - perfect for developers and testing.
Try Other Random Generators
Guide
The Random Number Generator is a tool that creates random numbers within your specified range. It’s built for developers, data scientists, and anyone needing quick access to random numbers for testing, simulations, or general use.
Key Features
- Generate multiple random numbers at once
- Set custom minimum and maximum values
- Choose between integer and decimal numbers
- Option to allow or prevent repeated numbers
- Real-time results display with timestamp
- History of previous generations
Technical Specifications
| Feature | Description |
|---|---|
| Number Range | Supports values from -2,147,483,648 to 2,147,483,648 |
| Generation Speed | Under 100ms for up to 1000 numbers |
| Number Types | Integers and decimals |
| Browser Support | Chrome, Firefox, Safari, Edge |
How to Use
- Enter the quantity of numbers you want to generate
- Set your minimum and maximum values
- Toggle “Allow Repeated Numbers” based on your needs
- Select number type (Integer/Decimal)
- Click “Generate” or press Enter
- Use “Reset” to clear all fields
Use Cases
The tool is particularly useful for:
| Industry | Application |
|---|---|
| Software Testing | Creating test data sets |
| Education | Math exercises and probability demonstrations |
| Gaming | Generating random game elements |
| Statistics | Random sampling and data analysis |
| Security | Creating random seeds for encryption |
FAQ
-
Can I generate decimal numbers instead of whole numbers?
Yes, you can switch between Integer and Decimal number types using the dropdown menu in the settings.
-
Why would I need to prevent repeated numbers?
Preventing repeats is useful for applications like lottery number simulation, unique ID generation, or random sampling where duplicates would skew results.
-
Can I use negative numbers in the range?
Yes, you can set both minimum and maximum values to negative numbers, as long as the minimum is less than the maximum.
-
Does the tool store or track the numbers I generate?
No, all generation happens locally in your browser. No data is sent to or stored on any servers.
Install Our Extensions
Add IO tools to your favorite browser for instant access and faster searching
Must-Try Tools
View All New Arrivals in Random Generator
Update: Our latest tool was added on Sep 16, 2025
Get Involved
Help us continue providing valuable free tools
