Random Number Generator
Generate truly random numbers with customizable ranges and options. Perfect for lottery picks, dice rolls, and decision making.
0 = integers only
When generating multiple numbers
Common Use Cases
- •Lottery Numbers: Generate unique lottery picks with no duplicates.
- •Dice Simulation: Roll virtual dice for games and probability experiments.
- •Random Selection: Pick winners, assign tasks, or make fair decisions.
- •Statistical Sampling: Generate random data for testing and analysis.
- •Gaming: Create random events, loot drops, or character stats.
Features
- •Custom Ranges: Set any minimum and maximum values
- •Multiple Numbers: Generate up to 1000 numbers at once
- •Unique Mode: Prevent duplicates for lottery-style picks
- •Decimal Control: Choose integer or decimal precision
- •Quick Presets: Dice, coins, lottery, and percentage
- •History Tracking: View your recent generations
True Randomness
This generator uses the Web Crypto API (crypto.getRandomValues()) for cryptographically secure random number generation. Unlike basic JavaScript randomness (Math.random()), this provides true unpredictability suitable for security applications.
The numbers are generated using your browser's cryptographic functions, which leverage hardware-based randomness sources for maximum entropy and unpredictability.
100% Private
All random number generation happens entirely in your browser. Your generated numbers, history, and settings never leave your device.
We never see, store, or transmit any of your data. Perfect for generating lottery numbers, passwords, or any sensitive random values.
Tips for Best Results
Generating Unique Numbers
When generating unique numbers (duplicates not allowed), ensure your range is large enough. For example, you cannot generate 10 unique numbers in the range 1-5.
Decimal Precision
Set decimal places to 0 for whole numbers only. Use 1-2 decimal places for percentages, or higher precision for scientific applications.
Quick Presets
Use the preset buttons for common scenarios. They automatically configure the settings and generate numbers immediately.
History Feature
The history keeps track of your last 100 generated numbers with timestamps, perfect for record keeping or verification.