Roll 12d20
Free online 12d20 dice roller and calculator. Roll 12 d20 instantly — see results, min 12, max 240, and average 126.
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 12d20? Dice Cove’s roller is preloaded with 12d20 so you can roll once or many times, log every result, and check the math: minimum 12, maximum 240, expected average 126.
12d20 calculator stats
- Minimum: 12
- Maximum: 240
- Average: 126
Use this page as a quick 12d20 roller and average calculator — roll as many times as you need and compare totals to the 126 expected value. For keep/drop rules and custom formulas, open the dice calculator.
How to roll 12d20
- Press Roll — notation is already set to 12d20.
- Add a modifier (for example 12d20+5) when damage or a bonus applies.
- Check the roll log to compare several 12d20 results in a row.
- Switch dice anytime via the tray or the full dice roller.
Common 12d20 uses
- Quick 12d20 damage or table rolls at the table
- Multi-attack checks or mass d20 rolls
- Compare results to the 126 average for 12d20
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- Dice calculator — averages, odds, and custom notation
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Frequently asked questions
What is the average of 12d20?
The average of 12d20 is 126. Each d20 averages 10.5, so 12 × 10.5 = 126.
What is the minimum and maximum for 12d20?
12d20 ranges from 12 (all 1s) to 240 (all 20s).
How do I roll 12d20 with a modifier?
Type 12d20+3 (or use the modifier field) to add a bonus to the total — useful for damage riders and spell attack modifiers.