Dice Roller

Dice Roller simulates rolling dice with a number of sides you choose, from the familiar six up to a hundred, and reports the individual results together with their total. It covers the whole family of tabletop dice by changing one number rather than requiring a different tool for each.

The total is the part that makes it useful beyond simple gaming. Most tabletop mechanics, and most statistical demonstrations, care about the sum of several dice rather than any individual face, and having it computed saves a step that is easy to get wrong when rolling a dozen dice at once.

Each roll is independent, so repeated values are expected rather than a sign of a problem — with six sides and five rolls, seeing the same face twice is entirely ordinary. The results come from the browser pseudo-random generator rather than a cryptographic one, which is adequate for play and for illustrating a distribution, and not adequate where an outcome has to be resistant to manipulation.

Only two inputs exist and neither offers the shaping that tabletop play tends to need. A modifier cannot be added to the total, so the plus-two that most rules apply to a damage roll has to be worked out separately, and there is no way to keep the highest or lowest few dice and discard the rest — the keep-highest mechanic that appears in many systems is not implemented. The dice are all the same type, so a mixed pool such as two six-sided and one twenty-sided die needs a second run and manual addition. Individual results are reported as a flat list with no breakdown by die type, no minimum or maximum bound, no running average across rolls, and no history of previous rolls to compare against.