Random Number Generator
random
Generate random numbers with customizable range, quantity, and formatting. Perfect for lotteries, games, and statistical sampling. Ctrl+Enter to generate.
All number generation runs in your browser. Data is never sent to any server.
Settings
Generated Numbers
1. How to Use
- Set the minimum and maximum values to define your number range (e.g., 1 to 100).
- Choose the quantity of numbers to generate (1–1000). Enable or disable duplicates and sorting.
- Click Generate Numbers. Use Copy or Download to save results.
2. How It Works
The tool uses cryptographically secure random number generation (crypto.getRandomValues) for true randomness.
When duplicates are disabled, numbers are generated using Fisher-Yates shuffle for uniform distribution.
All processing runs in your browser. No data is sent to any server.
3. About Random Number Generator
Free online random number generator for lotteries, games, statistical sampling, and simulations. Customizable range, quantity, separator, and duplicate/sort options.
4. Advantages
- Cryptographic security: Uses crypto.getRandomValues for true randomness.
- Flexible options: Range, quantity, separator, duplicates, and sorting.
- No signup: Use immediately in any browser.
- Privacy: All processing happens locally.
5. Real-World Use Cases
- Lottery simulations: Generate lottery numbers (e.g., 1–49, 6 numbers, no duplicates, sorted).
- Statistical sampling: Random sample selection for research.
- Games: Dice rolls, random picks, contests.
- Development: Test data, simulations, algorithm testing.