What dice does a D&D dice roller need?

A standard Dungeons & Dragons set is seven dice: D4, D6, D8, D10, D12, D20 and a percentile D100. This roller covers all of them, plus a modifier box for bonuses like +3 from your ability score and proficiency.

How does advantage and disadvantage work?

Advantage rolls two D20s and keeps the higher result; disadvantage rolls two and keeps the lower. Switch it on above the dice and the roll log shows both numbers so your table can see the roll was honest.

Are these dice rolls actually random?

Yes. Every roll uses your browser's built-in cryptographic random number generator, the same standard used by password managers, so each face has an equal chance. Physical dice can be chipped or weighted; these cannot.

Can I roll multiple dice at once, like 4d6?

Yes. Set the number of dice, pick the die type and roll. The log shows every individual face plus the total, which is exactly what you need for 4d6 ability scores or 8d6 fireball damage.

Do I need to download anything to use it?

No. It runs in any browser on phone, tablet or laptop, works at the table or on a video call, and there is no account, install or fee.

D&D Dice Roller — Roll D20, D6 and More Online

Which dice does Dungeons & Dragons use?

A standard tabletop set has seven dice, and each one has a job. The D20 decides whether you succeed: attack rolls, saving throws and ability checks all run through it. The D4, D6, D8, D10 and D12 handle damage and healing, matched to the weapon or spell you are using — a dagger deals D4, a longsword D8, a greataxe D12. The D100, rolled as two D10s or as a single percentile die here, covers random tables: wild magic surges, loot drops and whatever the dungeon master invented that morning.

Rolls are written as a count, a die and a modifier. 1d20+5 means roll one twenty-sided die and add five. 4d6 means roll four six-sided dice and total them, which is the classic way to generate ability scores. 8d6 is a fireball. Set the count and the die above, add your modifier, and the log shows every individual face so you can check the maths.

Advantage, disadvantage and critical hits

Advantage is the game's way of saying conditions favour you: you roll two D20s and keep the higher one. Disadvantage is the opposite — roll two, keep the lower. Because this roller shows both numbers before the kept result, nobody at the table has to take your word for it. Advantage applies to a single D20 roll, so the toggle switches off automatically if you change the die or roll more than one.

A natural 20 on an attack roll is a critical hit: you land the blow and roll your damage dice twice. A natural 1 is an automatic miss no matter how big your modifier is. The roller calls both out for you, which saves the usual squint across the table at a die that landed in someone's crisps.

Why roll dice online?

Physical dice are part of the fun, but they go missing, they roll off the table, and a chipped or cheaply moulded die genuinely skews results. A digital roller is always in your pocket, always complete, and every face has exactly the same chance every time because the numbers come from your browser's cryptographic random generator rather than from how the die was cast.

It also travels. Remote games over video call, a session in a coffee shop, a character sheet being levelled up on the bus, a new player who does not own a set yet — all of them work with a shared link and a phone. Keep the roll log visible on screen and the table can see every result, which settles arguments faster than any house rule.

D&D Dice Roller