Roll a D12
Roll a twelve-sided die online
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What Is a D12, and How Do I Roll One Online?
The D12 is a twelve-sided die shaped like a dodecahedron, made of twelve regular pentagons. It's the least common of the standard D&D dice, but it has one very specific job: it's the damage die for the greataxe, the barbarian's signature weapon, and the barbarian's hit die as well — so it's closely tied to one of the game's hardest-hitting classes. Outside D&D, it shows up in a handful of other tabletop and board games that need a die with more faces than a D10 but fewer than a D20. RollAD20 rolls a D12 instantly, so you're covered even if it's the one die missing from your set.
Frequently Asked Questions
What is the average roll on a D12?
6.5 — the midpoint between 1 and 12, calculated as (1 + 12) ÷ 2.
What is a D12 used for in D&D?
Its main job is the greataxe's damage die (1d12), and it's also the hit die for barbarians — both fitting for the class built around dealing and absorbing the biggest hits in the game.
Why is the D12 less common than other D&D dice?
Most weapons and classes use D6, D8, or D10 damage dice, so the D12 only appears in a handful of specific cases like the greataxe. That makes it the die most likely to go missing from a physical set — which is where an online roller comes in handy.
Is this dice roller random and fair?
Every roll uses your browser's cryptographically secure random number generator (the Web Crypto API), so every face has an equal chance of coming up — the same fairness you'd expect from a physical die, no biased algorithm involved.