Random Number Generator
Generate random numbers within specified ranges for various purposes
Number Range Settings
Lowest possible number to generate
Highest possible number to generate
How many random numbers to generate (1-1000)
Generated Numbers
?
Click 'Generate Numbers' to start
Quick Presets
Dice Roll
1 to 6
Coin Flip
0 to 1
Percentage
0 to 100
Lottery Numbers
6 numbers (1-49)
Decimal
0.0 to 1.0
Large Range
1 to 1,000,000
About Random Number Generation
How It Works
This tool uses JavaScript's cryptographically secure random number generator to produce truly random numbers within your specified range.
Common Use Cases
- Gaming: Dice rolls, card games, random events
- Statistics: Sampling, probability experiments
- Decision Making: Random selection, choices
- Testing: Random test data generation
- Competitions: Random winner selection
- Education: Math exercises, demonstrations
Options Explained
- Allow Duplicates: Same number can appear multiple times
- Sort Results: Display numbers in ascending order
- Show Sum: Calculate total of all generated numbers
Randomness Quality
- Cryptographically Secure: Uses crypto.getRandomValues()
- Uniform Distribution: Each number equally likely
- No Patterns: Results are unpredictable
- High Quality: Suitable for security applications
Quick Presets
- Dice Roll: Standard 6-sided die (1-6)
- Coin Flip: Binary choice (0-1)
- Percentage: 0-100 for probabilities
- Lottery: 6 unique numbers from 1-49
- Decimal: Floating point between 0 and 1
- Large Range: Numbers up to 1 million
Technical Notes
- Range: Supports any integer range
- Quantity: Generate up to 1,000 numbers at once
- Performance: Fast generation even for large quantities
- Privacy: All generation happens locally