Dice Roller
Roll 1 to 100 dice at once. Big visual grid, running total and average, instant re-roll. Handy for board games, RPGs, and probability
Press R, Space, or Enter to roll again.
About the Dice Roller
The Dice Roller throws anywhere from 1 to 100 six-sided dice at once. Every roll shows the full set of dice on a grid, the running total, and the average pip value · so you can use it for board games, RPGs, classroom probability demos, or any time you need to let chance decide.
How it works. Set the number of dice with the slider (or type a number directly), tap Roll, and the grid fills with that many dice. Tap Roll again for an instant re-roll · no clear, no reset. The total and average update on every throw, so you can watch how the numbers behave with different sample sizes.
Probability demonstration. The expected average of a fair six-sided die is 3.5 ((1+2+3+4+5+6)/6). Roll five dice and the average swings wildly between throws · roll a hundred and watch the average settle reliably near 3.5. That's the Law of Large Numbers in two taps, and it's why even a small classroom demo lands the intuition that "average behaviour is predictable, individual rolls aren't".
What it's for. Board games and tabletop RPGs when the physical dice have wandered off (Yahtzee needs 5, Monopoly 2, D&D 1 to a dozen). Classroom probability lessons. Random pick from a list (roll one die, the result picks the option). Saving-throw simulations. Any time you need a quick fair roll without rummaging through a drawer.
Part of the PlayMemorize family of browser tools. Runs entirely in your browser, works offline as a Progressive Web App.
FAQ
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How many dice can I roll?
From 1 to 100, set with the slider or the number input. Every roll renders all of them on a grid so you can read each individual result, not just the total. Useful when you need to count specific pip values (Yahtzee scoring, RPG critical-hit checks). -
What kind of dice are these?
Standard six-sided dice (d6), each showing 1 to 6 pips. The total sums all dice in the current roll and the average is that total divided by the number of dice. Other polyhedral dice (d4, d8, d10, d12, d20) are not yet in the tool · only the d6. -
Is each roll random?
Yes. Every die is rolled independently using the browser's pseudorandom number generator (Math.random), so a fresh set comes up each time you tap Roll. The rolls are independent of each other and of previous sessions · there is no "due for a six" bias. -
How can I use it for a probability demo?
Roll 5 dice and note the average · it will swing widely between throws (sometimes 2.4, sometimes 4.6). Roll 100 dice and the average will reliably settle near 3.5, the theoretical expected value for a fair six-sided die. That's the Law of Large Numbers in action and a classic classroom demo. -
Does it work offline?
Yes. PlayMemorize is a Progressive Web App. Install once and the Dice Roller works without an internet connection.