How to roll dice online
- Choose how many dice (1–20) and how many sides each has.
- Add a modifier if your game needs one — for example +3 for a D&D attack bonus.
- Press Roll (or the spacebar). You’ll see each die, the total and a running history.
Dice notation
Tabletop games write rolls as NdX+M: roll N dice with X sides and add M. So 2d6 means two six-sided dice, 1d20+5 means one twenty-sided die plus 5, and 4d6 is a classic way to roll character stats. The history list uses the same notation.
| Die | Common uses |
|---|---|
| D4 | Small weapon damage, healing potions |
| D6 | Board games (Monopoly, Catan, Yahtzee), Warhammer |
| D8, D10, D12 | Weapon and spell damage in RPGs |
| D20 | Attack rolls, skill checks and saving throws in D&D and Pathfinder |
| D100 (percentile) | Loot tables, random events, percentage chances |
Probability of dice rolls
Each face of a fair die is equally likely: 1 in 6 for a D6, 1 in 20 for a D20. When you add several dice, totals in the middle become more common — with 2d6, a 7 comes up 6 times out of 36 (16.7%), while 2 or 12 appear only 1 time in 36 (2.8%). That’s why 7 is so important in games like Catan and craps.
Fair, secure rolls
Every roll uses your browser’s cryptographic random number generator with unbiased sampling, so virtual dice are at least as fair as physical ones (real dice can be slightly unbalanced). Need a quick yes/no? Flip a coin instead.
Frequently asked questions
Are virtual dice fair?
Yes. Each face has exactly the same chance thanks to secure, unbiased random numbers.
How do I roll a D20?
Set Number of dice to 1, choose D20 and press Roll.
What does 2d6+3 mean?
Roll two six-sided dice, add them up, then add 3.
Can I roll more than one type of die?
Roll one type at a time; the history list keeps all your results together.