Roll 1d20 and other dice online
A game stalls when the dice are missing, and a spare d20 is never where you left it. This dice roller puts a full set
on your screen. Tap Roll to throw a single six-sided die, or type 1d20 to throw a
twenty-sided one. It is free, runs in your browser and needs no account.
It also handles the rolls that need a little arithmetic: several dice at once, a bonus added to the total, and the
keep-the-best rules used in tabletop games. The odds for whatever you are rolling appear beside it.
How to roll the dice
- Choose your dice. Tap a die (D4 to D100) and set how many, or type a roll such as
2d6+3 in the Roll box.
- Press Roll. You can also press Ctrl (⌘ on a Mac) plus Enter.
- Read the result. Each die is drawn with its number, and the total and breakdown appear below.
- Check the history. Earlier rolls from this visit are listed newest first, and you can copy them.
Roll a 1-6 dice
The roller opens on a single standard die, so pressing Roll gives a whole number from 1 to 6, each equally likely.
Change How many to roll a pair, or a handful for a game that asks for five. Two dice add up to
anywhere from 2 to 12, and 7 is the most common total because six of the 36 possible pairs make it. If you only want a number from
1 to 6 on a wheel, the random number 1 to 6 page does that.
Roll 1d20, the twenty-sided die
The d20 decides most of the big moments in role-playing games: whether an attack lands, a lock opens or a lie is
believed. Each of its 20 faces has a 5% chance, so a natural 20 or a natural 1 is a 1 in 20 event. Add a bonus in the
Add or subtract box, or type d20+5, and the breakdown shows the die and the modifier
separately. For a plain number wheel from 1 to 20, there is also a
random number 1 to 20 page.
Dice notation, explained
The Roll box reads the standard shorthand. The first number is how many dice, and the number after the d is how many sides.
d20 or 1d20: one twenty-sided die.2d6: two six-sided dice, added together.2d6+3: two six-sided dice plus 3.1d8+1d4: different dice in one roll.d%: a percentile die, the same as d100.4d6kh3: roll four, keep the highest three.
A mistake in the box is explained in plain words next to it, and the Die, How many, Add or subtract and Keep
controls build the same roll without typing.
Advantage, disadvantage and drop lowest
Advantage rolls two d20 and keeps the higher, and Disadvantage keeps the lower. They are
the Quick rolls 2d20kh1 and 2d20kl1. With advantage, the chance of at least one 20 rises from 5% to
9.75%. Ability score rolls 4d6kh3, four dice with the lowest dropped, which averages about
12.2, compared with 10.5 for three plain d6. Any die that does not count is drawn hollow with a dashed outline and a strike
through its number, so the difference does not depend on color.
See the odds before you roll
The Odds for this roll panel shows the lowest and highest possible total, a chart of the spread and
a table with the exact chance of every total. It shows why a pair of dice favors the middle while a single die is
flat, and how much a keep rule or a modifier changes the result. It is also a quick check on a house rule or a
homebrew roll.
Is the online dice roller fair?
Yes. Every die is chosen the moment you press Roll, using your browser’s secure random number
generator (crypto.getRandomValues) in a way that favors no face. Each side has an equal chance and an
earlier roll has no effect on the next one, so a die is never “due” for a 20. The dice are then animated to land on
the numbers already chosen, so the animation never decides anything. For the detail,
read how WheelSpinny picks.
When a digital dice roll helps
- Tabletop role-playing. Roll attacks, checks and ability scores, and paste the history into a game log.
- Board games. Replace a lost die, or roll a handful of them for a game that needs many.
- Remote play. Everyone sees the same notation and can copy the rolls into the chat.
- Teaching probability. Roll a few hundred times and compare with the odds table.
- Settling a tie. Highest roll goes first, with no argument about who threw it properly.
Dice roller or another tool?
Dice suit numbers. For exactly two outcomes, the coin flip is simpler. To pick from a
list of your own options, use the main spin the wheel page, and to choose a person, try the
random name picker.
Good to know
- You can roll up to 100 dice at once, with 2 to 1,000 sides each.
- The last roll you set up is saved in your own browser. Nothing is sent to a server, and the history is not stored.
- The tool works on phones, tablets and desktop browsers, and with a keyboard.
- A device set to reduce motion skips the tumble, and the result is still shown and announced.
- It is meant for games and everyday choices, not for gambling or anything that needs a certified draw.
Dice roller FAQ
How do I roll 1d20 online?
Type 1d20 (or just d20) into the Roll box, or tap the D20 button, then press Roll. The die tumbles and lands on a whole number from 1 to 20, and the result is written under it and announced for screen readers. Press Ctrl (⌘ on a Mac) plus Enter to roll again without touching the mouse.
What does 1d20 mean?
1d20 is dice notation for “roll one 20-sided die.” The number before the d is how many dice to roll, and the number after it is how many sides each die has. So 1d20 is one die with sides numbered 1 to 20, 2d6 is two six-sided dice, and 3d8 is three eight-sided dice.
What are the odds of rolling a 20 on a d20?
Each face of a fair d20 has a 1 in 20 chance, which is 5%. That applies to a natural 20, a natural 1, or any other number you pick. With advantage the chance of at least one 20 rises to 9.75%. With disadvantage you need both dice to show 20, which is 0.25%.
How do I roll a 1-6 dice?
Leave the roll on 1d6, which is the default, and press Roll. A standard six-sided die gives a whole number from 1 to 6, with each number equally likely. To roll two of them, change How many to 2 or type 2d6.
Can I roll more than one die at a time?
Yes. Set How many, or type a count in front of the d, for example 5d6 for five six-sided dice. You can roll up to 100 dice in one go. Each die is shown on its own, and the total and breakdown sit under them.
Which dice can I roll?
The buttons cover D4, D6, D8, D10, D12, D20 and D100, which is the usual tabletop set. If you need something else, type it. Any die from 2 to 1,000 sides works in the Roll box, so d3, d30 or d1000 are fine. Typing d% is the same as d100.
How do I add or subtract a modifier?
Use the Add or subtract box, or put it in the notation: d20+5 adds 5 to the roll, and 2d6-1 takes 1 away. You can mix dice types in one roll too, such as 1d8+1d4+2. The breakdown shows each die and the modifier so you can check the sum.
How does rolling with advantage or disadvantage work?
Advantage means rolling two d20 and keeping the higher one. Disadvantage means keeping the lower one. Tap Advantage or Disadvantage under Quick rolls, or type 2d20kh1 and 2d20kl1. The die that is not counted is drawn hollow with a dashed outline, so you can see it without relying on color.
How do I roll 4d6 and drop the lowest?
Tap Ability score, or type 4d6kh3, which means roll four dice and keep the highest three. The dropped die is shown struck through. The average total is about 12.2, compared with 10.5 for three plain d6. You can also write it as 4d6dl1, meaning drop the lowest one.
What do kh, kl, dh and dl mean?
They are the keep and drop codes. kh3 keeps the highest 3 dice, kl2 keeps the lowest 2, dh1 drops the highest die and dl1 drops the lowest die. The Keep and How many to keep boxes set the same thing without typing.
Is this dice roller really random and fair?
Yes. Every die is decided the moment you press Roll, using your browser’s secure random number generator (crypto.getRandomValues) with a method that avoids bias. Each side of a die has an equal chance, and one die never influences the next. The tumbling animation is drawn afterward to match the result and cannot change it. For more detail, read how WheelSpinny picks.
Can I see the probability of each total?
Yes. The Odds for this roll panel shows the lowest and highest total, a chart of how likely each total is, and a table with the exact chance of every total. It is a quick way to see why 7 is the most common result on 2d6 (a 1 in 6 chance), while 2 and 12 each come up 1 time in 36.
Does the dice roller keep a history?
Yes. Roll history lists your rolls from this visit, newest first. Copy puts them on your clipboard as plain text so you can paste them into a chat or a game log, and Clear empties the list. The history is not saved after you close the page.
Can I use it for D&D and other tabletop games?
Yes. It handles the notation these games use, including a d20 with a modifier, advantage and disadvantage, and 4d6 drop lowest for ability scores. It is also handy for board games when the dice are missing, and for any game that tells you to roll a die and add something.
Is a digital dice roll as fair as a real die?
It can be fairer. A real die can be slightly uneven, chipped or thrown in a way that favors one face. A digital roll gives every face the same chance, every time. For a game night that is more than enough, though it is not meant for gambling or anything that needs a certified draw.
Does it work on my phone and with a keyboard?
Yes. The layout fits narrow screens, the buttons are sized for touch, and everything works from the keyboard. Ctrl or ⌘ plus Enter rolls, and results are announced for screen readers. If your device is set to reduce motion, the dice skip the tumble and the result still appears.
Is the dice roller free, and does it save anything?
It is free, with no account or download. The last roll you set up is saved in your own browser so it is there next time. Nothing is sent to a server, and the roll history is not stored.
What if I want a number that is not from a die?
Use the random number generator and choose your own range, or open the 1 to 6 and 1 to 20 pages for ready-made wheels. For picking between named options such as people or dinner choices, the main spin the wheel page lets you type in a list.