What is an online dice roller?
Rolling dice is the most classic way to bring chance into a game or a decision. A six-sided die gives a result from 1 to 6 with equal probability for each number. This tool lets you roll virtual dice from your phone or computer, with no physical dice needed and none lost under the couch.
It is perfect when you are playing a board game and missing a die, when you need several at once, or when you just want a quick, visual random number with a real rolling animation.
When to use the dice roller?
- Board and role-playing games when a die is lost or broken.
- Deciding turns: roll higher and you go first.
- Quick draws among a few people by assigning each a number.
- Learning activities to teach probability and statistics.
How does our dice roller work?
Each roll generates a random number with the browser’s cryptographic generator (crypto.getRandomValues()) and turns it into a die face. Every face is equally likely, just like a balanced physical die, and each roll is independent of the last.
The animation is just for show: the result is decided the moment you roll. You can tap the table for a normal roll, drag the dice and let go with a flick or, on many phones, shake the device. Everything is computed in your browser, with nothing sent to a server.
Types of dice and what each is for
Although the six-sided die (the D6) is the best known, board games and especially role-playing games use many more: the D4, D8, D10, D12 and the famous D20 from Dungeons & Dragons, plus the D100 for percentages. Each one simply changes the range of possible numbers, but the idea is the same: every face has the same probability. With several dice at once you can add up rolls (for example, 2D6 to move in a board game) or throw a handful for RPG systems that ask you to “roll 3D6”. Having a roller on your phone is super handy when you're missing exactly the die you need, or when several of you are playing and there aren't enough to go around.
Missing an unusual die, like a D3 or a D30? The N button on the shelf creates a die with as many sides as you want.
Frequently asked questions
Are the dice balanced?
Yes. Every face is equally likely, generated by the browser’s cryptographic generator with no bias.
Can I roll several dice at once?
Yes. Tap the dice on the shelf to put them on the table (up to 20, and you can mix types, for example 2D6 and a D20) and they are all rolled together.
Is it valid for official draws with money at stake?
It uses the browser’s cryptographic generator, but the site is not audited or certified, so avoid it for draws with legal or financial value.
Why do repeated numbers come up in a row?
It is normal: each roll is independent, so repeats happen often in any game of chance.
What do D6, D20 and so on mean?
The “D” stands for “die” and the number tells you how many faces it has: a D6 is the normal six-sided die, a D20 has twenty faces and is widely used in RPGs, and a D100 gives a number from 1 to 100. They all work the same way: they spread the probability evenly across their faces.
Can I add up the result of several dice?
Yes, and you don’t have to do the maths: the tool adds up the roll and shows the total at the top of the table, with each die’s value next to it. You can also add a modifier (+2, −1…) and save the rolls you use often.
Can I roll 4d20 or 2d6 like in role-playing games?
Yes. Pick the die (D4, D6, D8, D10, D12, D20 or D100) and how many you want, up to 20: 4d20 means four twenty-sided dice and 2d6 two six-sided dice. The total is added up for you.
Which dice do role-playing games use?
The usual set is D4, D6, D8, D10, D12 and D20, plus D100 for percentages. All of them are here, so you can roll attacks, damage or checks from your phone.
How do I roll a die online?
Tap a die on the shelf to put it on the table and roll it, or grab it and let go with your finger or mouse. A D6 gives a number from 1 to 6, each with the same chance.
Can I use it as virtual dice for board games?
Yes. Most board games need one or two six-sided dice: add 2 D6 and the roller adds them up for you. Leave the phone on the table and let each player roll on their turn.
Related guides
- Random numbers: the guide — What “random” really means, how computers generate it, practical uses in draws and raffles, and the gambler's fallacy explained.
- Party games that need nothing but your phone — Ideas to liven up any gathering using just your phone: picking who starts, dares, random teams and icebreakers that work in seconds.