Random Number Generator
Generate random numbers with customizable ranges and options
💡 Share this generator setup with others
📚 Examples, Rules & Help
⚡Quick Examples - Try These Calculations
🔍How It Works
Pseudorandom Generation
Method: JavaScript Math.random() function
Generates pseudorandom numbers using a deterministic algorithm initialized with a seed.
For integers:
Math.floor(Math.random() × (max - min + 1)) + min
For decimals:
Math.random() × (max - min) + min
Uniform Distribution
Property: Each value has equal probability
The random number generator provides uniform distribution across the specified range.
Example: Range 1-100
Each number has exactly 1% probability of being selected
🌍Real-World Applications
❓Frequently Asked Questions
How random are these numbers?
These are pseudorandom numbers generated by a deterministic algorithm.
They're suitable for most applications including games, simulations, and statistical sampling.
For cryptographic purposes, use a cryptographically secure random number generator.
Can I generate truly random numbers?
True randomness requires physical processes (like atmospheric noise or radioactive decay).
For most practical purposes, pseudorandom numbers are sufficient and preferred.
Services like random.org provide true random numbers from atmospheric noise.
What's the difference between uniform and normal distribution?
Uniform: Every value has equal probability (this calculator)
Normal: Values cluster around the mean in a bell curve
Most random number generators default to uniform distribution.
How do I ensure reproducible results?
Use a seed value to initialize the random number generator.
The same seed will always produce the same sequence of numbers.
This calculator uses the browser's built-in generator without seed control.
🎯Common Use Cases
🎯 Gaming Applications
- • Dice rolling and card shuffling
- • Random enemy spawning
- • Loot generation in RPGs
- • Procedural content generation
📈 Data Analysis
- • Random sampling from populations
- • Monte Carlo simulations
- • A/B testing assignments
- • Bootstrap resampling
🎓 Educational Use
- • Probability experiments
- • Statistics demonstrations
- • Random assignment to groups
- • Simulation exercises
💼 Business Applications
- • Random quality control sampling
- • Employee assignment systems
- • Market research surveys
- • Contest and giveaway selection