Roll a Dice
One to six dice, D4 through D20. Every die is shown on its own alongside the total — because a single number hides the part that is interesting.
The dice
Earlier rolls
What this tool does
A dice roller covering one to six dice with four, six, eight, ten, twelve or twenty sides. Each die is displayed on its own rather than only as a total, and the breakdown underneath counts how many dice showed each face. That breakdown is what makes this more than a random number: rolling four six-sided dice and seeing that two of them came up 3 is a different experience from being handed the number 14.
Each die is an independent draw, so the dice genuinely do not influence each other — this is what makes the totals bunch up in the middle of the range rather than spreading evenly across it. The page carries one piece of actual probability because it is the thing people most often get wrong: with two six-sided dice, 7 is six times more likely than 2 or 12. It is not cryptographic randomness and it does not claim to be. It is also not a substitute for real dice at a table, where the physical roll is half the point.
How to use it
- Pick how many dice, from one to six, and how many sides, from four to twenty. Two D6 is the default.
- Press Roll. Each die appears on its own, with the total underneath and a face-by-face breakdown below that.
- Roll again to build up a history of earlier rolls at the bottom, which shows each set alongside its notation.
- Press Copy the roll to paste the individual dice, the notation and the total into a message.
Common use cases
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Tabletop games
Everything from a D4 to a D20, with the individual dice shown so you can see what each one did.
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Board games with lost dice
Two D6 covers most board games, and the breakdown settles any argument about what was actually rolled.
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Teaching probability
Roll two D6 a dozen times and watch how rarely 2 and 12 come up compared to 7. The shape of the distribution is the lesson.
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Picking at random
A single D20 is a convenient way to pick a number from 1 to 20 without a random number generator.
Frequently asked questions
Are the dice independent of each other?
Yes. Each die is a separate random draw, so no die influences any other. That is why totals bunch up in the middle of the range: with two D6 there is only one way to roll 2, but six different ways to roll 7.
Why is 7 more likely than 2?
Because there is one combination that makes 2 (1+1) and six that make 7 (1+6, 2+5, 3+4, 4+3, 5+2, 6+1). The middle of the range always has more ways to be reached than the ends.
What is the notation in the history?
It is standard dice notation: 2d6 means two six-sided dice, 4d20 means four twenty-sided dice. The history shows each set with its notation so you can see what was rolled and how.
Does the history persist?
No. It is held in the page and clears when you reload or close the tab. The Clear button empties it without a reload.