Roll 3d8
Rolling 3d8 means rolling three eight-sided dice and adding them, for a total from 3 to 24 with an average of 13.5. 13 and 14 are the most likely totals at 9.38% each. In D&D 5e, 3d8 is the damage of Shatter, Spirit Guardians and Chromatic Orb, and of damage cantrips at level 11.
3d8 added together
3d8 ranges from 3 to 24, averages 13.5, and is most likely to total 13.
| Total | Chance | This or higher | Distribution |
|---|---|---|---|
| 3 | 0.2% | 100% | |
| 4 | 0.59% | 99.8% | |
| 5 | 1.17% | 99.22% | |
| 6 | 1.95% | 98.05% | |
| 7 | 2.93% | 96.09% | |
| 8 | 4.1% | 93.16% | |
| 9 | 5.47% | 89.06% | |
| 10 | 7.03% | 83.59% | |
| 11 | 8.2% | 76.56% | |
| 12 | 8.98% | 68.36% | |
| 13 | 9.38% | 59.38% | |
| 14 | 9.38% | 50% | |
| 15 | 8.98% | 40.63% | |
| 16 | 8.2% | 31.64% | |
| 17 | 7.03% | 23.44% | |
| 18 | 5.47% | 16.41% | |
| 19 | 4.1% | 10.94% | |
| 20 | 2.93% | 6.84% | |
| 21 | 1.95% | 3.91% | |
| 22 | 1.17% | 1.95% | |
| 23 | 0.59% | 0.78% | |
| 24 | 0.2% | 0.2% |
Where you roll 3d8 in D&D
Shatter: Shatter is a 2nd-level spell with a 60-foot range: every creature in a 10-foot-radius sphere makes a Constitution save, taking 3d8 thunder damage on a failure or half on a success (about 6.5 on average). Roll once for everyone. Against a cluster of goblin warriors with 10 HP each, a goblin that fails the save drops 83.59% of the time, but one that succeeds only drops if you roll 20 or more (6.84%). In the 2024 rules Constructs have disadvantage on the save; in 2014 it was any creature made of stone, crystal or metal. Each slot level above 2nd adds 1d8, so a 3rd-level Shatter is 4d8.
Other spells: Spirit Guardians deals 3d8 radiant (or necrotic for an evil caster) to enemies that fail a Wisdom save in a 15-foot emanation around you. It triggers when they enter or end their turn there, at most once per turn each, so walk into the middle of the fight and let it work for the whole minute. Chromatic Orb is a ranged spell attack for 3d8 of the damage type you choose, which makes it great against a monster with a known vulnerability.
Cantrips and monsters: At level 11, Sacred Flame, Ray of Frost and Shocking Grasp reach 3d8. On the DM side, a hill giant's tree club hits for 3d8 + 5 (18.5, listed as 18) and the 2024 mage's Arcane Burst for 3d8 + 3 (16). On 3d8 you roll 18 or more 16.41% of the time and 14 or more exactly half the time.
Roll 3d8 FAQ
What is the average damage of Shatter?
Shatter deals 3d8 thunder damage, which averages 13.5. A creature that succeeds on its Constitution save takes half, about 6.5 once odd totals are rounded down.
How does Shatter scale with higher spell slots?
Shatter adds 1d8 for each slot level above 2nd. A 3rd-level slot deals 4d8 (average 18) and a 4th-level slot deals 5d8 (average 22.5).
What is the most likely roll on 3d8?
13 and 14 are tied as the most likely totals on 3d8, each with a 9.38% chance. The minimum of 3 and the maximum of 24 each have a 0.2% chance (1 in 512).
Does Shatter damage objects?
Yes. A nonmagical object in the area that nobody is wearing or carrying also takes the damage, which is useful for breaking doors, chains or glass from a distance.
Related
- Shatter 5e
- Spirit Guardians 5e
- Roll a d8
Other dice
- 3D Dice Roller
- Roll a d2
- Roll a d3
- Roll a d4
- Roll a d6
- Roll a d8
- Roll a d10
- Roll a d12
- Roll a d20
- Roll a d100
- Roll a d1000
About this roller
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Contains content from the System Reference Document 5.1 and 5.2 by Wizards of the Coast LLC, used under the Creative Commons Attribution 4.0 International License.