Dice Roller
Roll any combination of dice: d4, d6, d8, d10, d12, d20, and d100. View history and statistics for your rolls.
Quick Answer
Select your dice below and hit Roll. Each die uses a cryptographically fair random number. The average roll on a d6 is 3.5, on a d20 is 10.5.
Select Dice
d4
d6
d8
d10
d12
d20
d100
Results
About the Dice Roller
This free online dice roller lets you roll any combination of standard polyhedral dice used in tabletop roleplaying games like Dungeons and Dragons, Pathfinder, and countless other systems. Each roll uses JavaScript's Math.random() function to generate fair, uniform random numbers. You can roll multiple dice of different types simultaneously and track your roll history.
Standard Dice Types
The standard set of polyhedral dice includes: d4 (four-sided tetrahedron), d6 (six-sided cube, the classic die), d8 (eight-sided octahedron), d10 (ten-sided pentagonal trapezohedron), d12 (twelve-sided dodecahedron), d20 (twenty-sided icosahedron, the signature die of D&D), and d100 (percentile, typically rolled as two d10s). Each die produces uniformly distributed results from 1 to its maximum value.
Dice Probability Basics
The probability of rolling any specific number on a fair die is 1 divided by the number of sides. On a d6, each number has a 1/6 or 16.67% chance. On a d20, each number has a 5% chance. When rolling multiple dice, the distribution shifts from uniform to bell-shaped. Two d6 totals range from 2 to 12, but 7 is the most likely result because there are six combinations that produce it.
Using Dice in RPGs
In D&D and similar games, the d20 is rolled for attack rolls, ability checks, and saving throws. Damage is typically rolled on smaller dice depending on the weapon: a dagger uses 1d4, a longsword 1d8, and a greatsword 2d6. The d100 is used for percentile rolls and random tables. Understanding dice probability helps players make better tactical decisions and game masters design balanced encounters.