How to Use a Dice Roller

A digital dice roller is the same maths as a physical die, minus the die that rolled under the sofa. This guide covers the Dice Roller for tabletop games, board games and teaching — plus the one thing that actually matters: making sure the roll is fair.

Rolling standard dice

Choose a die size — d4, d6, d8, d10, d12, d20, d100 — and roll. A d6 gives 1–6 with equal probability, exactly like the plastic one in your hand. The generator uses the browser's cryptographic random source, so there's no bias toward neat-looking numbers.

Tabletop RPGs: pools and modifiers

For a d20 attack roll with a +5 modifier, roll the d20 and add five mentally — or roll a pool of dice at once for damage (2d6, 3d8, etc.) and read the total. Rolling several dice at once is much faster than tapping a single die repeatedly, and the history shows each individual result so you can verify a crit.

Are digital dice as fair as real ones?

For most dice, yes — arguably fairer. Physical dice have manufacturing bias (rounded corners, uneven density) that shows up in long statistical tests. A cryptographically-seeded software die has no manufacturing tolerance. The caveat is trust: you have to trust the software. On Wheel Of List the roll is client-side and the code is simple; you can watch the history accumulate and test the distribution yourself.

Teaching probability with dice

Dice are the cheapest probability lab there is. Have students roll a d6 fifty times and tally the results — the bars flatten toward equal as the count grows (that's the law of large numbers). Then roll 2d6 and tally the sums: 7 dominates because more combinations make it. This single exercise teaches uniform vs. triangular distributions better than any worksheet.

Board games and quick decisions

Lost the physical die? Roll a d6 on your phone. Need a random move in a homebrew game? d4. Need 1–100 for a loot table? d100. The roller replaces every die in the box, and it never gets knocked off the table mid-game.