🎲 Dice Roller
Tap a die to roll it. Tap again to roll again.
Roll Multiple Dice
D&D Quick Rolls
Roll History
The Dice Behind Every Game
Dice are the oldest randomization tools in human history, predating written language. The earliest known dice — carved from animal bone — date to approximately 3000 BCE in the Indus Valley civilization. Modern tabletop gaming expanded the dice universe far beyond the humble D6. Dungeons and Dragons, created in 1974, popularized the full set of polyhedral dice: D4 (tetrahedron), D6 (cube), D8 (octahedron), D10 (pentagonal trapezohedron), D12 (dodecahedron), and D20 (icosahedron).
Probability You Should Know
A single D6 has a flat 16.67% chance of any result. Two D6s have a bell curve: 7 is the most likely sum (16.67% probability), while 2 and 12 each have only a 2.78% chance. For RPG players: rolling 1D20 gives a flat distribution — every number from 1-20 is equally likely at 5% each. A +1 modifier is always worth exactly 5% better odds of success. Rolling with advantage (roll twice, take higher) is equivalent to roughly a +3.3 modifier on average.
The "4d6 drop lowest" method for ability scores produces an average of 12.24, compared to 10.5 for straight 3d6. This makes characters slightly above average — appropriate for heroes destined for adventure rather than ordinary commoners. The distribution also has a nice bell shape that makes extreme results (3-6 or 16-18) rare but possible.
Are virtual dice truly fair?
This roller uses cryptographic random number generation (crypto.getRandomValues), which produces results indistinguishable from perfect randomness. Virtual dice are actually more fair than physical dice, which can have manufacturing imperfections and worn edges.
What does "4d6 drop lowest" mean?
Roll four six-sided dice, remove the lowest result, then sum the remaining three. It is the standard D&D method for generating ability scores, producing a slightly above-average result that befits player characters.