Roll a d8 Online
Roll 1d8 or up to ten at once with SpinWave's free 8-sided dice roller. Every face has the same 12.5% chance, and the total is added up for you.
Pick your dice and roll.
The d8 at a glance
- Shape: An octahedron with eight triangular faces.
- Possible results: 1 to 8
- Chance of any face: 1 in 8 (12.5%)
- Average roll: 4.5
Where the d8 gets used
- A longsword deals 1d8 damage when wielded in one hand in Dungeons & Dragons 5e.
- Bards, clerics, druids, monks, rogues and warlocks roll a d8 hit die in Dungeons & Dragons 5e.
Rolling two d8 together
Two d8 give totals from 2 to 16. Those totals are not equally likely: 9 comes up most often, because more combinations add up to it than to any other total. The chance of the highest possible total, 16, is 1 in 64.
Why roll online
Physical dice get lost, roll under furniture and can be very slightly unbalanced from manufacturing. SpinWave draws every result from your browser's cryptographic random source instead. It also keeps a history of your last fifteen rolls, which settles arguments at the table. For mixed handfuls of different dice, use the full dice roller, and for any range outside standard dice use the random number generator.
Roll a different die
d8 dice roller: FAQ
What are the odds of rolling a 8 on a d8?
1 in 8, or 12.5%. Every face is equally likely on every roll, and one roll has no effect on the next.
What is the average roll on a d8?
4.5. Over many rolls the results settle around the middle of the 1 to 8 range.
Can I roll more than one d8 at once?
Yes. Move the Number of dice slider up to ten and the total is added up for you, so 3d8 takes one click.