A d12 is a twelve-sided (dodecahedron) die that gives a result from 1 to 12. Each result has a 1/12 ≈ 8.33% chance and the average is 6.5.
Quick facts
- Shape
- Regular dodecahedron (Platonic solid)
- Result range
- 1 – 12
- Average
- 6.5
- Chance of each result
- 1/12 ≈ 8.33%
- Typical use
- D&D barbarian hit die; greataxe damage 1d12
Where is the d12 used?
In D&D 5th edition the barbarian’s hit die is a d12 and the greataxe deals 1d12 damage. A d12 is also handy for picking a random month or hour.
How do I roll?
- The dice roll automatically when the page opens. To roll again, press “Roll Dice”, tap the dice or hit the space bar.
- On a phone with “Shake to roll” enabled, just shake your device.
- Pick a die type from “Dice Types” in the top menu or the d4 – d20 tabs: roll 1–4 of a d4, d8, d10, d12 or d20, or 1–6 six-sided dice.
- Every roll is saved to “Roll History” with its total, and the “Stats” tab shows how often each face has come up.
Is Zar Salla a fair dice roller?
Yes. Results come from your browser’s cryptographic random number generator (Web Crypto API, crypto.getRandomValues), and rejection sampling gives every face exactly the same probability. Nothing is sent to a server, nothing is decided in advance and no roll depends on the previous one.
Just like real dice, short streaks of the same number are normal. As you roll more, each face’s share gets closer to the expected value — you can watch this yourself in the “Stats” tab.
How many d12 do you want to roll?
Frequently asked questions
What is the average roll of a d12?
(1+…+12)/12 = 6.5.
Is a d12 the same as 2d6?
No. On a d12 every result from 1 to 12 is equally likely; 2d6 can never roll 1 and 7 is its most likely total.
Can I roll several d12?
Yes. Choose 1 to 4 dice; the total is calculated automatically.
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