Roll 100d20
Free online 100d20 dice roller and calculator. Roll 100 d20 instantly — see results, min 100, max 2000, and average 1050.
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 100d20? Dice Cove’s roller is preloaded with 100d20 so you can roll once or many times, log every result, and check the math: minimum 100, maximum 2000, expected average 1050.
100d20 calculator stats
- Minimum: 100
- Maximum: 2000
- Average: 1050
Use this page as a quick 100d20 roller and average calculator — roll as many times as you need and compare totals to the 1050 expected value. For keep/drop rules and custom formulas, open the dice calculator.
How to roll 100d20
- Press Roll — notation is already set to 100d20.
- Add a modifier (for example 100d20+5) when damage or a bonus applies.
- Check the roll log to compare several 100d20 results in a row.
- Switch dice anytime via the tray or the full dice roller.
Common 100d20 uses
- Quick 100d20 damage or table rolls at the table
- Multi-attack checks or mass d20 rolls
- Compare results to the 1050 average for 100d20
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- Dice calculator — averages, odds, and custom notation
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Frequently asked questions
What is the average of 100d20?
The average of 100d20 is 1050. Each d20 averages 10.5, so 100 × 10.5 = 1050.
What is the minimum and maximum for 100d20?
100d20 ranges from 100 (all 1s) to 2000 (all 20s).
How do I roll 100d20 with a modifier?
Type 100d20+3 (or use the modifier field) to add a bonus to the total — useful for damage riders and spell attack modifiers.