Random Number Generator
Why Use Our Random Number Generator?
Custom Range
Set any minimum and maximum values. Generate numbers from 1-10, 1-100, or any custom range you need.
Bulk Generation
Generate up to 100 random numbers at once. Perfect for creating test data or multiple picks.
No Duplicates Option
Toggle off duplicates to ensure every number is unique. Essential for raffles and lotteries.
Quick Presets
One-click presets for common uses: dice rolls, lottery numbers, coin flips, and more.
How to Generate Random Numbers
- 1
Set Your Range
Enter the minimum and maximum values for your random numbers. Common ranges include 1-10, 1-100, or custom ranges for specific purposes.
- 2
Choose Quantity
Use the slider to select how many random numbers you want (1-100). Need 6 lottery numbers? Slide to 6.
- 3
Configure Options
Toggle "Allow duplicates" off for unique numbers. Enable "Sort results" if you want them in ascending order.
- 4
Generate and Copy
Click "Generate Numbers" to create your random numbers. Use the copy button to copy them to your clipboard.
Quick Presets Explained
Dice Roll (1-6)
Simulates rolling a standard 6-sided die. Each number from 1 to 6 has equal probability.
Two Dice (2-12)
Represents the sum of two dice. Note: this is simplified - real two-dice probability is different.
Lottery Numbers (1-50)
Generates 6 unique numbers from 1-50. Adjust range to match your local lottery.
Coin Flip (0-1)
Binary choice: 0 for tails, 1 for heads. Perfect for yes/no decisions.
Percentage (1-100)
Pick a random percentage. Useful for probability demonstrations or random selection.
Deck of Cards (1-52)
Generates 5 card positions from a 52-card deck. Great for card game simulations.
Common Use Cases
Raffles & Giveaways
Generate winning numbers for contests. Use no-duplicates mode for fair drawings.
Lottery Numbers
Pick your lottery numbers randomly instead of using birthdays or patterns.
Game Decisions
Roll virtual dice, pick starting players, or randomize game elements.
Educational Use
Teach probability, statistics, and random sampling with real demonstrations.
Software Testing
Generate random test data, IDs, or values for QA and development.
Research & Surveys
Random sampling for surveys, experiments, or participant selection.
Understanding Random Numbers
Random number generators (RNGs) produce sequences of numbers that lack any pattern. Our generator uses pseudo-random number generation (PRNG), which is suitable for most everyday applications like games, raffles, and simulations.
Uniform Distribution
Every number in your range has an equal probability of being selected. Rolling 1-6 gives each number a 16.67% chance.
Independence
Each generation is independent - previous results don't affect future ones. Getting 7 three times doesn't make 7 less likely next time.
No Duplicates Mode
When disabled, each number can only appear once. Uses Fisher-Yates shuffle algorithm for fair selection.
Sorting
Optional sorting arranges numbers from smallest to largest, making it easier to read and compare results.
Frequently Asked Questions
Is this random number generator truly random?▼
Yes, the generator uses JavaScript's Math.random() function which provides pseudo-random numbers with uniform distribution. Each number in the range has an equal probability of being selected. For cryptographic purposes, you'd need a different type of RNG.
Can I generate numbers without duplicates?▼
Yes! Toggle off the 'Allow duplicates' switch to generate unique numbers only. This is perfect for lottery numbers, raffles, or any situation where you need non-repeating numbers. Note: your range must be large enough to accommodate the quantity requested.
What is the maximum range I can use?▼
You can set any minimum and maximum values as long as the minimum is less than or equal to the maximum. The generator works with both positive and negative numbers, so you could generate from -1000 to 1000 if needed.
How many numbers can I generate at once?▼
You can generate between 1 and 100 numbers at a time using the quantity slider. If you need unique numbers (no duplicates), make sure your range is large enough to accommodate the quantity you want.
Can I use this for lottery numbers?▼
Yes! Use the 'Lottery Numbers' preset which generates 6 numbers from 1-50, or customize the range to match your specific lottery (e.g., Powerball uses 1-69). Make sure to turn off duplicates for authentic lottery picks.
What does the 'Sort results' option do?▼
When enabled, your generated numbers will be displayed in ascending order (smallest to largest). This is helpful for lottery numbers or when you need to see the range of generated values clearly.