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Roll one or more dice.
The Dice Roller throws virtual dice for board games, tabletop RPGs, classroom activities or any time you need a fair random number. Choose how many dice to roll and how many sides each has, then press Roll to see every face and the combined total.
It supports the common polyhedral dice — d4, d6, d8, d10, d12 and d20 — and can roll up to ten at once. Six-sided dice are shown with traditional pip patterns, while the others display their number.
Each face is equally likely, so a single die averages (s + 1) / 2 — for a d6 that is 3.5. The average total scales with the number of dice, but any individual roll can land anywhere in the possible range.
The 'd' stands for die and the number is how many sides it has. A d6 is a standard six-sided cube; a d20 is the twenty-sided die used in many role-playing games.
They are drawn from the browser's cryptographically secure random source, and rejection sampling removes modulo bias, so results are as fair as a well-made physical die.
The minimum total equals the number of dice (all showing 1) and the maximum equals the number of dice multiplied by the sides. For example, three d6 range from 3 to 18.
Each roll uses one die type for all the dice. To combine types, roll one type, note the result, then change the sides and roll again.