Roll virtual dice for your game. Choose how many dice and how many sides, click Roll, and see each die and the total instantly.
1. Choose how many dice to roll (1 to 6). 2. Choose the sides per die — D4, D6, D8, D10, D12 or D20. 3. Click Roll Dice to see each die and the total.
Dice are used in board games, card games, role-playing games like Dungeons & Dragons, and classroom maths, but real dice are not always at hand. This free online dice roller replaces them: choose how many dice you want and how many sides each one has, click Roll, and it shows each die's result and the total. The results are random, just like real dice, and you can roll again as many times as you like. It works on any phone or computer, so your whole game group can use it.
The most common die is the D6, the six-sided die used in Ludo, Monopoly, Snakes and Ladders and many other games. Role-playing games use more shapes: D4, D8, D10, D12 and the famous D20, the twenty-sided die that decides success or failure in Dungeons & Dragons. Each die gives a random number from 1 to its number of sides, and rolling several dice together gives a total that is most often in the middle of the range.
Suppose you roll 2 D6 dice, like in Monopoly. Each die can show 1 to 6, so the total can be anything from 2 to 12. The most common total is 7, because there are six ways to make 7 (1+6, 2+5, 3+4, 4+3, 5+2, 6+1), while there is only one way to make 2 (1+1) or 12 (6+6). Try it in the roller above: choose 2 dice and D6, click Roll a few times, and watch how often 7 appears compared with 2 or 12.
Now roll a single D20, the die used in Dungeons & Dragons. Choose 1 die and D20, and click Roll. The result is a random number from 1 to 20, and every number is equally likely: a 1 (a critical failure) and a 20 (a critical success) are just as likely as a 10. In D&D, a roll of 20 usually means a great success and a roll of 1 means a bad failure, which is why the single D20 is so exciting. Roll it ten times and you will see the results spread across the whole range from 1 to 20.
One die is fair: every face has the same chance. A D6 gives each number a 1 in 6 chance (about 16.7 percent), and a D20 gives each number a 1 in 20 chance (5 percent). When you roll two dice, the totals are not equal: the middle totals are more likely than the extremes, because there are more ways to make them. For 2 D6, the chance of 7 is 6 in 36 (16.7 percent), while the chance of 2 or 12 is only 1 in 36 (2.8 percent). That is why 7 is the most common roll in Monopoly and why the game feels fair: big and small totals are both rare.
Pick the right die for your game. Board games usually need D6, while Dungeons & Dragons uses D20, D12, D10, D8 and D4. Roll all your dice at once. Choose the number of dice first, so the total is calculated for you. Use it for decisions too. A D6 can pick between 6 options, and a D20 can pick between 20. Keep the results visible. The roller shows each die separately, so everyone can check the result. Roll again if a die falls off the table. In a real game a cocked die is re-rolled; online, just click Roll again.
Using the wrong die. A D20 in a game that needs a D6 gives numbers up to 20, which breaks the game, so check the rules first. Forgetting to add the dice. With 2 or more dice, the result is the total of all dice, not the highest one, unless your game says otherwise. Thinking the dice are rigged. Random results feel streaky — rolling three 1s in a row is rare but normal, and it does not mean the roller is broken. Rolling the wrong number of dice. Some games need 2 dice for movement and 1 die for combat, so change the number between turns. Trusting a pattern. Dice have no memory: after five low rolls, a high roll is no more likely than before.
Pro Tip: In Dungeons & Dragons, a D20 roll of 20 is a critical success and a roll of 1 is a critical failure. Use 1 die and D20 for attack rolls, and add your bonus to the result.
Note: This dice roller uses your browser's random number generator. The results are random for games and fun, but they are not suitable for gambling, lotteries or cryptography.
How does the dice roller work? It uses your browser's random number generator to pick a random number from 1 to the number of sides for each die, then shows each die and the total. The results are as random as real dice.
What is a D20? A D20 is a twenty-sided die used in Dungeons & Dragons and other role-playing games. It gives a random number from 1 to 20, and a 20 is usually a critical success.
What is the most common roll with 2 D6 dice? Seven. There are six ways to make 7 with two dice, more than any other total, so it appears about 16.7 percent of the time.
Are online dice rolls truly random? They use your browser's built-in random number generator, which is random enough for games. They are not suitable for gambling or cryptography, which need special random sources.
Can I roll more than 6 dice? This tool supports up to 6 dice at once. For more dice, roll in two groups and add the totals together.
What dice do I need for Dungeons & Dragons? D&D uses D4, D6, D8, D10, D12 and D20. The D20 is used for most checks and attacks, while the others are used for damage and healing.
Can I use the dice roller to make a decision? Yes. Assign each option a number and roll the matching die: a D6 picks between 6 options and a D20 picks between 20.
Does the dice roller remember my rolls? No. Each roll is independent, and the tool does not save your history. Dice have no memory, so past rolls never affect future rolls.
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