Dice Roller Calculator

Total

5

The Rolls

  • Individual rolls: 3, 2

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Includes your inputs and results for this calculation, plus any additional calculations you've compared.

How This Calculator Works

A dice roller simulates rolling one or more dice and adds up the result — the digital equivalent of the tabletop-gaming shorthand “2D6+3” (roll two six-sided dice, add 3). Choose how many dice to roll, how many sides each die has, and an optional modifier, and this calculator rolls them instantly, showing both the total and each individual die.

Unlike every other calculator on this site, a dice roll isn’t a deterministic function of its inputs — rolling the same settings twice should (and will) give different results, since that’s the entire point. Sharing a link restores the settings you chose, not the specific numbers that came up.

The Formula

Each die produces a random whole number from 1 to its number of sides, with every outcome equally likely. The total is the sum of every individual roll, plus the modifier:

Total=(Roll1+Roll2++RollN)+Modifier\text{Total} = (\vA{\text{Roll}_1} + \vA{\text{Roll}_2} + \dots + \vA{\text{Roll}_N}) + \vB{\text{Modifier}}

Worked Example

Rolling 2D6 (two standard six-sided dice) with no modifier:

  1. Each die independently lands on a number from 1 to 6.
  2. The total is their sum — anywhere from 2 (both dice show 1) to 12 (both dice show 6).
  3. 7 is the most common total, since more combinations of two dice add up to 7 than any other number.

Source: Wikipedia: Dice Notation.

Frequently Asked Questions

Is each die roll truly random?

Each roll uses your browser's cryptographically-strong random number generator, giving every side an equal chance of coming up — functionally indistinguishable from rolling a real, fair die.

What does "2D6+3" mean?

That's standard tabletop-gaming shorthand for "roll two six-sided dice, add them together, then add 3." This calculator lets you set the number of dice, sides, and modifier separately to roll any combination.

Why doesn't sharing a link show the same roll I got?

A shared link restores your SETTINGS (number of dice, sides, modifier), not the specific numbers that came up — re-rolling with the same settings is the whole point of a dice roller, the same way the Random Number Generator works.