Dice Roller — Roll Dice Online
Roll a d20, d6 or any polyhedral dice, with a modifier and totals.
Pick a die and hit roll — each result and the total appear here.
To roll dice online, choose a die — d4, d6, d8, d10, d12, d20 or d100 — set how many, add any modifier, then roll. For example, 3d6 + 2 might land [4, 1, 6] +2 = 13. Each die is a fair, uniform draw from 1 to its number of sides.
How the dice roller works
Each die is a fair, uniform draw: every face from 1 to the number of sides is equally likely, and the dice are independent of one another. The roller shows each individual result plus the total, so “3d6” gives you three separate numbers and their sum. A modifier simply adds or subtracts a fixed amount from that sum — the standard tabletop shorthand you see written as 3d6 + 2 or 1d20 − 1.
Sums are not uniform
A single die is flat — on a d6 each value 1–6 has the same one-in-six chance. But once you add dice together, the totals are not flat. With 2d6 the sum ranges from 2 to 12, yet 7 comes up far more often than 2 or 12 because there are more ways to make it (6 + 1, 5 + 2, 4 + 3, and their mirrors). The more dice you add, the more the totals bunch toward the middle in a bell-shaped curve.
Common uses
Tabletop RPGs lean on the d20 for attacks and checks and on d6/d8/d10/d12 for damage; board games use dice for movement and combat; and teachers use them for probability lessons, random grouping, or picking who answers next. The roll history keeps your recent results this session so you can read back a sequence, and Reset clears it.
Standard polyhedral dice
| Die | Range | Typical use |
|---|---|---|
| d4 | 1–4 | Small damage, tokens |
| d6 | 1–6 | Board games, damage, everyday rolls |
| d8 | 1–8 | Weapon damage |
| d10 | 1–10 | Damage; pairs as percentile tens |
| d12 | 1–12 | Larger weapon damage |
| d20 | 1–20 | RPG attacks, saves and skill checks |
| d100 | 1–100 | Percentile rolls and random tables |
Reading your results
Because every roll is independent, streaks are normal — rolling three 6s in a row on a d6 is unremarkable over many rolls, not a sign the dice are “hot”. A d100 is usually rolled in real life as two ten-sided dice (a tens die and a units die); here it is a single uniform draw from 1 to 100, which gives the exact same odds. If you need a value outside these seven dice, the random number generator handles any custom range.