Dice roller online

Why an online dice roller exists

Tabletop groups need d20 checks, damage dice, and the occasional ability-score set without hunting for a physical bag. A coin toss is two sides. A number generator in a range is not polyhedral notation. This page exists so you can type 2d6+3 or tap d20 and see faces plus a total. The 4d6 drop lowest preset is the usual method for one ability score, not a full character builder. We do not sell dice, host campaigns, or claim affiliation with any RPG publisher. History on the page is so the table can compare a set of scores, not so we can audit you. If you need initiative order for several combatants, use the initiative tracker. If you need a random encounter table, that is a different catalog page.

How to roll a d20 (and the rest)

Click d20 then Roll dice, or type 1d20. Notation is NdS or NdS+M: number of dice, sides, optional modifier. Examples: 1d20, 2d6+3, 4d6. The roller caps a single roll at 20 dice so a typo cannot hang the page.

4d6 drop lowest rolls four six-sided dice, discards the lowest, and sums the other three — the usual D&D 5e ability-score method. History stays on the page so you can compare a set of scores. For a binary choice, use the coin flip instead of a d2.

Examples

4d6 drop lowest for a D&D ability score.

1d20 + 5 for an attack roll with modifier.

Common mistakes

Typing invalid notation like 2d — use forms such as 2d6 or 4d6dl1.

Using dice for a yes/no decision — a coin flip is faster.

How faces are chosen

Each die face is an integer from one through the side count, drawn with crypto.getRandomValues. That is cryptographically strong, not a claim of true random, not a casino shoe, and not a server-side roller you must trust. Modifiers add after the faces. 4d6 drop lowest is four independent d6 draws, then drop the minimum, then sum — the usual ability-score story, not a house rule we invented. We do not store rolls on a TheOwlBay account. localStorage remembers notation on this device. History is the current visit. We will not pretend this replaces a physical dice tray if your table prefers that. Weighted raffles and list picks are different engines; do not use a d100 here as a student picker.

Who this roller is for

RPG tables, wargame nights, and teachers demonstrating probability will get more from notation and polyhedral buttons than from a generic number box. The 4d6 drop lowest control is for players generating ability scores at session zero. It is not a mobile virtual tabletop, not a licensed SRD, and not a gambling product. If you need to sort a combat round, use the initiative tracker. If you need a yes/no, flip a coin. If you need a country or a word, those are other pages. TheOwlBay does not host your campaign or sell dice skins. Ads stay off. No sign-up is required to roll.

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