Dice Roller

An online dice roller

Roll any number of dice with any number of sides — from a single coin-flip-like d2 idea up to the d20 of tabletop games or a d100 for percentages. Each die is rolled independently using your browser's cryptographic randomness, so every result is fair and unpredictable. Handy when you've lost the dice, need a d20 your set doesn't have, or want to roll a fistful at once.

What the dice notation means

Tabletop games write dice as NdS — N dice of S sides. So 2d6 is two six-sided dice, 1d20 is a single twenty-sided die, and 3d8 is three eight-sided dice. Set the count and sides above and the tool shows each die plus the total.

Why more dice changes the odds

A single die is uniform — every face is equally likely. Add the results of several dice and the totals bunch toward the middle: with 2d6 a total of 7 is six times as likely as a 2 or a 12. That bell-curve effect is why games use multiple dice for "average" outcomes and a single die for swingy, all-or-nothing rolls.

FAQ

Is a digital roll really random?

Yes — this tool uses crypto.getRandomValues, the same randomness source used for security, which is far more uniform than a physical die that can be weighted or worn. There's no pattern and no seed you can predict.

Can I roll for a board game without dice?

Absolutely. Set sides to 6 for most board games, 20 for D&D, or 100 when you need a percentage. The total updates instantly each time you roll.

Is the dice roller free to use?

Yes, it's completely free with no sign-up and no limit on how many times you can roll.

Does it work on a phone?

Yes. It's fully responsive, so you can roll dice on a phone or tablet during a game night without needing physical dice on hand.

What dice sizes can I roll?

You can set any number of sides, including the standard polyhedral set used in tabletop games — d4, d6, d8, d10, d12, d20, and d100. You can also roll multiple dice at once and see both each die and the combined total.

Why doesn't the same number keep coming up?

Because each roll is independent and uniform, streaks and repeats are normal and expected, not a glitch. True randomness has no memory, so a fair die can land on the same face several times in a row just as a physical one can.