D&D Dice Roller
Roll virtual D&D dice online with our free dice roller for tabletop RPGs. Supports d4, d6, d8, d10, d12, d20, and d100 with modifiers and breakdown charts.
About This Calculator
The D&D Dice Roller is a free online tool that simulates rolling polyhedral dice for Dungeons & Dragons and other tabletop role-playing games. Whether you need to roll a d20 for an attack check, d6 for fireball damage, d8 for a longsword, or d100 for a percentile roll, this virtual dice roller handles them all. Roll up to 15 dice simultaneously with optional modifiers and get comprehensive results including total sum, average, minimum and maximum values, frequency distribution charts, and individual roll breakdowns.
The calculator uses uniformly distributed random number generation to simulate fair dice throws. Each die independently generates a random integer between 1 and the number of sides with equal probability. The modifier (e.g., +3 for Strength bonus or -1 for a penalty) is applied to the total sum. The frequency chart displays how often each value appeared across your roll, while the individual rolls chart shows every die's result in sequence. Results can be shared via URL, making it easy to save rolls or share them with your gaming group.
Regional Notes
Global: Dungeons & Dragons is the world's most popular tabletop RPG, played by millions of people across India, the United States, the United Kingdom, and worldwide. The D&D dice roller works identically for all users regardless of region — just select your dice and roll. Tabletop RPG communities like D&D Adventurers League and Pathfinder Society run organized play events globally, and this tool supports all standard dice types used in these games.
Frequently Asked Questions
What is a D&D dice roller?
A D&D dice roller is a virtual tool that simulates rolling polyhedral dice used in Dungeons & Dragons and other tabletop role-playing games. It supports standard dice types including d4, d6, d8, d10, d12, d20, and d100, and can roll up to 15 dice at once with optional modifiers.
What dice types does the D&D dice roller support?
The D&D dice roller supports all standard polyhedral dice types used in tabletop RPGs: d4 (tetrahedron), d6 (cube), d8 (octahedron), d10 (pentagonal trapezohedron), d12 (dodecahedron), d20 (icosahedron), and d100 (Zocchihedron). You can roll between 1 and 15 dice of the same type at once.
How do modifiers work in dice rolling?
A modifier is a flat number added to or subtracted from the total dice roll. For example, rolling 2d6+3 means rolling two 6-sided dice, summing their values, and adding 3. Modifiers represent character ability scores, proficiency bonuses, weapon enhancements, or penalties applied in D&D and other RPG systems.
How many dice can I roll at once?
You can roll between 1 and 15 dice of the same type at once. Simply enter the number of dice, select the die type, optionally add a modifier, and click Roll Dice to see the total sum, average, minimum and maximum values, and a detailed breakdown of each individual die result.
Is the virtual D&D dice roller fair and random?
Yes, the calculator uses JavaScript's Math.random() to generate uniformly distributed random numbers for each die face. All values have equal probability — a d20 has a 5% chance for each face, a d6 has approximately 16.67% chance per face, and so on. The virtual roller is equivalent to a physical fair die.
What is a d20 used for in D&D?
The d20 is the most important die in Dungeons & Dragons. It determines success or failure of actions — attack rolls against Armor Class, ability checks, and saving throws. A natural 20 is an automatic success (critical hit), while a natural 1 is an automatic failure. Players add relevant modifiers like ability scores and proficiency bonuses to the roll.
What is the difference between this and the D20 dice roller?
This D&D dice roller supports multiple dice types (d4, d6, d8, d10, d12, d20, d100) and optional modifiers, making it a versatile tool for any tabletop RPG situation. The dedicated D20 dice roller only supports d20 dice. This calculator is ideal when you need different dice types for different game scenarios in a single tool.
What games use polyhedral dice?
Polyhedral dice are primarily used in Dungeons & Dragons (D&D), but also in Pathfinder, Starfinder, Warhammer Fantasy Roleplay, Call of Cthulhu, Shadowrun, Savage Worlds, and many other tabletop RPGs. These games use different dice types for various mechanics — damage rolls use d4 to d12, while skill checks and attacks use d20.