Roll a D8
Roll an eight-sided die online
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What Is a D8, and How Do I Roll One Online?
The D8 is an eight-sided die shaped like an octahedron — two square pyramids joined at their base. It shows up less often than the D6 or D20, but it has a firm home in Dungeons & Dragons as the damage die for mid-tier weapons like the longsword, rapier, and battleaxe, and it's the hit die for classes like the cleric and rogue. Outside D&D, it's a staple of other polyhedral-dice RPGs that need a step between the D6 and D10. If you don't have one in your dice bag — or you're playing over a video call — RollAD20 rolls a D8 instantly, with the same fairness as a physical die.
Frequently Asked Questions
What is the average roll on a D8?
4.5 — the midpoint between 1 and 8, calculated as (1 + 8) ÷ 2.
What weapons use a D8 in D&D?
Mid-weight weapons mostly: the longsword, rapier, battleaxe, and flail all deal 1d8 damage, and it's also the hit die for several classes, including clerics and rogues.
Is a D8 harder to roll fairly than a D6?
Not really — both are convex, evenly weighted solids, so a fair physical D8 lands on each face with equal probability just like a D6. RollAD20's virtual D8 skips the physical variables entirely and draws from the browser's cryptographically secure random number generator.
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.