Generate random numbers in any range. Dice roller, coin flipper, and list picker built right in. Custom ranges, no-repeat mode, and instant results. Free forever.
Custom Range
Set any minimum and maximum value. 1 to 10, 1 to 1000, or -500 to 500. Any range you need, the tool handles it.
No-Repeat Mode
Generate unique numbers with no duplicates. Perfect for raffle drawings, bingo, and lottery-style picks.
Dice Roller
Roll 1 to 10 dice at once. Each shows 1 to 6 with automatic total calculation. No physical dice needed.
Coin Flipper
Heads or tails decided by true randomness. Quick decisions, tie-breakers, or just settling an argument.
List Picker
Enter any list of items and the tool picks one at random. Restaurants, names, tasks, whatever you need to choose from.
Instant with Animation
Single numbers get a satisfying quick-flip animation before landing on the result. Multiple numbers display immediately.
What Is a Number Generator?
A number generator is a tool that picks random numbers for you. You set the range, like 1 to 100, and the tool picks a number at random from within that range. It works just like drawing a number out of a hat, except it is faster, more fair, and you never run out of numbers to draw.
People use number generators for all kinds of things. Teachers use them to call on random students. Game hosts use them for raffle drawings. Friends use them to settle who goes first. Developers use them for testing. The applications are endless.
Our tool goes beyond just picking a number. It includes a dice roller for board games, a coin flipper for quick decisions, and a list picker that lets you enter anything and have the tool choose at random. All of it runs in your browser with zero loading time.
How the Random Number Generator Works
Using the tool is straightforward:
1Set your range using the minimum and maximum fields, or click a quick preset like 1-10, 1-100, or 1-6 for dice.
2Choose how many numbers you want. One for a single pick, or up to 100 for a batch.
3Toggle No Repeats if you need unique numbers. This is essential for raffles and bingo.
4Click Generate. For single numbers, a quick animation cycles through possibilities before landing on your result. For batches, the numbers appear instantly.
5Copy your numbers, download them, or just generate again for a new result. The history panel tracks your recent picks.
The randomness comes from JavaScript's built-in Math.random() function, which produces uniformly distributed pseudo-random numbers. For the no-repeat mode, the tool uses a Fisher-Yates shuffle on the full range and picks from the shuffled array, guaranteeing every number appears at most once.
Common Number Generator Ranges
Different situations call for different ranges. Here are the most commonly used ones:
Range
Common Uses
1-6
Dice rolls, board games
1-10
Quick picks, rating scales, small groups
1-20
Classroom activities, game challenges
1-50
Raffle drawings, moderate-size pools
1-100
General purpose, percentage picks, large drawings
1-1000
PIN generation, large raffles, data testing
0-9
Single digit picks, combination locks
1-12
Clock hours, months, small group picks
All of these are available as quick presets, so you can switch between ranges with a single click. You can also type in any custom range if none of the presets match what you need.
Uses for a Random Number Generator
Random number generators are surprisingly versatile. Here are some of the most popular ways people use them:
Raffle and lottery drawings where every participant needs an equal chance
Classroom activities like random student selection or quiz question order
Board game substitutes when you forgot the dice at home
Settling decisions like who goes first, who picks the restaurant, or who does the dishes
Bingo number calling without a physical cage and balls
Creating PINs and verification codes for temporary accounts
Statistical sampling for research and data analysis
Game development and testing with random inputs
Fantasy sports draft orders and random matchup generation
Educational exercises for probability and statistics lessons
The dice roller and coin flipper cover even more ground. Any time you need to make a random choice or simulate chance, this tool has you covered.
How Random Number Generators Actually Work
There are two main types of random number generators. True random number generators use physical phenomena like atmospheric noise or radioactive decay to produce genuinely unpredictable values. Pseudo-random number generators (PRNGs) use mathematical algorithms that produce sequences of numbers that appear random but are actually determined by an initial seed value.
Our tool uses the PRNG built into your web browser, which is Math.random(). This produces uniformly distributed values between 0 and 1, which we then scale to your chosen range. The result is that every number in your range has an equal probability of being selected.
For everyday uses like games, raffles, classroom activities, and decision-making, a PRNG is more than adequate. The numbers are statistically indistinguishable from true random numbers for all practical purposes. If you needed cryptographic randomness (for passwords or encryption keys), you would want to use a tool specifically designed for that, like our password generator.
Frequently Asked Questions
Need a Random Number?
Pick a range, click generate, and get your number in under a second. Dice roller, coin flipper, and list picker are all included. Free, instant, no sign-up.