Roll 40d8
Free online 40d8 dice roller and calculator. Roll 40 d8 instantly — see results, min 40, max 320, and average 180.
Quick roll
Dice notation
kh keep highest · kl keep lowest · dl drop lowest · Space roll
Presets
Roll lines
Roll log
Your roll history appears here.
Need to roll 40d8? Dice Cove’s roller is preloaded with 40d8 so you can roll once or many times, log every result, and check the math: minimum 40, maximum 320, expected average 180.
40d8 calculator stats
- Minimum: 40
- Maximum: 320
- Average: 180
Use this page as a quick 40d8 roller and average calculator — roll as many times as you need and compare totals to the 180 expected value. For keep/drop rules and custom formulas, open the dice calculator.
How to roll 40d8
- Press Roll — notation is already set to 40d8.
- Add a modifier (for example 40d8+5) when damage or a bonus applies.
- Check the roll log to compare several 40d8 results in a row.
- Switch dice anytime via the tray or the full dice roller.
Common 40d8 uses
- Quick 40d8 damage or table rolls at the table
- Scaled spell or feature damage that stacks many d8s
- Compare results to the 180 average for 40d8
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Frequently asked questions
What is the average of 40d8?
The average of 40d8 is 180. Each d8 averages 4.5, so 40 × 4.5 = 180.
What is the minimum and maximum for 40d8?
40d8 ranges from 40 (all 1s) to 320 (all 8s).
How do I roll 40d8 with a modifier?
Type 40d8+3 (or use the modifier field) to add a bonus to the total — useful for damage riders and spell attack modifiers.