Online Random Number Generator

Updated Sep 20267 min read

Need a random number for a giveaway, a raffle, a quick decision, or just want to roll a die without carrying one around? This free online random number generator draws a number from any range, rolls a random PIN of 3 to 8 digits, or spins an on-screen number wheel — up to 20 numbers at once, with an option to avoid repeats. Nothing to install, and every draw happens right in your browser.

What is a random number generator?

A random number generator is a tool that produces an unpredictable number on demand — the digital equivalent of rolling a die, drawing from a raffle drum or spinning a numbered wheel, but instant and without any physical equipment. Type in a range, hit Generate, and a number appears that you couldn't have picked yourself in advance.

This one goes further than a single-number picker: it has three modes — Range, for any Min/Max span; Digits / PIN, for a random multi-digit code; and Wheel, for a spinning, projector-friendly draw — so one tool covers picking a number, generating a PIN and running a raffle-style spin.

How to use this random number generator

1. Choose a mode. Tap Range, Digits / PIN or Wheel at the top depending on what you need.
2. Set your Min and Max (or digit count). Range and Wheel take a Min and Max — negative numbers work too, so -50 to 50 is fine. Digits / PIN takes a digit count from 3 to 8 instead.
3. Adjust the options. Range mode lets you draw up to 20 numbers at once, avoid repeats and sort the result; PIN mode can block repeated digits or a leading zero; Wheel mode can remove each winning number from the pool after it's drawn.
4. Generate. Range and PIN show your result as an animated flap-tile readout; Wheel spins and lands on a highlighted number.
5. Copy or check Recent. Copy result (or Copy PIN) puts the outcome on your clipboard, and Recent picks / Recent PINs keeps a running list of what you've drawn this session.

Pick a number from any range — 1 to 100 or your own

Range mode is the default and the most flexible: type any Min and Max — the classic 1 to 100, a smaller pick like 1 to 5, a die-style 1 to 6, or your own custom span — and Generate returns a number from that range. Min and Max both accept negative numbers, so a range like -20 to 20 works exactly the same way. There's no artificial cap on how wide the range itself can be; very large spans are handled safely up to the limit of what a browser can represent as a precise whole number.

Generate multiple numbers at once, with or without repeats

Set "How many" to anywhere from 1 to 20 and Generate draws that many numbers in a single batch, each appearing as its own tile. By default a batch can repeat a number — useful if you're simulating independent draws, like rolling the same die several times. Turn on No repeats and the tool draws without replacement instead, guaranteeing every number in that batch is unique; ask for more unique numbers than your range actually holds (say, 10 unique picks from a 1–5 range) and the draw is automatically capped at however many unique values the range contains. Sort results puts a finished batch in ascending order, which is handy for lottery-style number sets.

Every generated number is also added to the collapsible Recent picks list underneath, so you can glance back at earlier draws from the same session — Clear empties it, and it resets on its own when you leave the page.

Random PIN and digit generator

Switch to Digits / PIN mode for a random multi-digit code instead of a single number. Choose a digit count from 3 to 8, hit Generate PIN, and you'll get a code of that length. No repeated digits shuffles the ten digits and takes the first however-many, so nothing repeats within that code — useful for PIN-style codes where you want every digit distinct. No leading zero forces the first digit to 1–9 instead of 0–9 (or swaps a leading zero out when repeats are off); real-world PINs are allowed to start with 0, so leave this off unless you specifically want a code that reads as a plain number rather than a PIN.

Copy PIN puts the code on your clipboard, and Recent PINs keeps a session list of the codes you've generated, just like Range mode's history.

Random number generator wheel

Wheel mode turns picking a number into a visible spin: set a Min and Max (up to 50 numbers total), hit Spin, and a colored wheel spins and lands on one number, announced with a chime and a flap-tile readout of the winner. Slices are labeled with their number when there are 30 or fewer, and Remove number after spin takes each winner out of the pool once it's drawn — spin repeatedly without that toggle on and any number, including one already drawn, can come up again; turn it on for elimination-style draws where nobody wins twice, like a class raffle or a door-prize wheel. If your range holds more than 50 numbers, narrow it — the wheel is built to stay readable, not to squeeze in an unlimited number of slices.

This mode is built with groups and classrooms in mind: the Fullscreen button hides the header, article and footer and enlarges the wheel and readout for a projector, and every spin plays a ticking sound with light vibration on phones that support it (both can be muted with the sound button) so a room can follow along without squinting at a phone screen.

Real randomness, not a shortcut

Every draw in every mode pulls from your browser's Web Crypto API (crypto.getRandomValues) rather than the weaker Math.random(). That alone isn't the whole story: converting a random byte into a number in your chosen range naively (a raw value modulo the range size) very slightly favors some numbers over others whenever the range doesn't divide evenly into the underlying byte space. This tool avoids that with genuine rejection sampling — it works out the largest multiple of your range that fits inside the available random values, throws away any draw that falls outside that multiple, and re-draws until it gets one that does, so every number in your range has a truly equal chance rather than an approximately equal one. For ranges too large to fit in a single 32-bit draw, it combines multiple random words (up to 53 bits, the limit of what JavaScript can represent as an exact integer) and applies the same rejection step.

Worth being precise about what this does and doesn't make it: it's a cryptographically strong pseudo-random number generator (a CSPRNG), not a basic formula-and-seed PRNG, and not a hardware true random number generator (TRNG) that samples physical noise the way a service like random.org does. For picking a number, a PIN, a raffle winner or a wheel spin, that distinction won't matter in practice — the outcome is unpredictable and can't be reverse-engineered from previous draws — but if your use case specifically requires a certified TRNG, reach for a hardware-based source instead.

What can you use a random number generator for?

• Raffles and giveaways — draw a winning number, or a batch of unique numbers with No repeats on, from your full ticket range
• Sortition and group decisions — pick who goes first, who presents next, or which option wins a tie, without any bias
• Games — die rolls (1–6), bingo-style calls, board-game setup numbers, or a spin on the Wheel for a party game
• Random sampling — draw a small set of unique numbers from a larger population for a quick, unbiased sample
• Lottery-style number picks — generate a sorted, no-repeat set of numbers in a range, the same shape as a lottery ticket's numbers
• PINs and short codes — a random PIN or raffle ticket code from Digits / PIN mode when you need one but don't want to make one up yourself

A random number generator vs. rolling dice or drawing from a hat

Physical methods — dice, a raffle drum, names in a hat — are genuinely random, and some people prefer the ritual. But they don't scale well: rolling a die 20 times to fill a batch, or drawing tickets one at a time from a bowl, takes real time and can't easily avoid repeats or sort the result afterward. This tool does the same job as the physical version instantly, and can apply rules a die or a hat can't enforce on its own — no repeats, a maximum count, sorted output, or an elimination-style wheel that removes each winner as it's drawn. It's also the more practical choice when there's no physical die or drum handy, or when the draw needs to be visible to a group on a screen rather than passed around by hand.

Your numbers stay on your device

Every number, PIN and spin is generated locally in your browser — nothing is sent to a server, and no account is needed. Only your theme and sound preference are remembered between visits, saved in your browser's local storage; Recent picks and Recent PINs are session-only and reset when you leave or refresh the page.

Frequently asked questions