Roll 3d20
Free online 3d20 dice roller and calculator. Roll 3 d20 instantly — see results, min 3, max 60, and average 31.5.
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 3d20? Dice Cove’s roller is preloaded with 3d20 so you can roll once or many times, log every result, and check the math: minimum 3, maximum 60, expected average 31.5.
3d20 calculator stats
- Minimum: 3
- Maximum: 60
- Average: 31.5
Use this page as a quick 3d20 roller and average calculator — roll as many times as you need and compare totals to the 31.5 expected value. For keep/drop rules and custom formulas, open the dice calculator.
How to roll 3d20
- Press Roll — notation is already set to 3d20.
- Add a modifier (for example 3d20+5) when damage or a bonus applies.
- Check the roll log to compare several 3d20 results in a row.
- Switch dice anytime via the tray or the full dice roller.
Common 3d20 uses
- Quick 3d20 damage or table rolls at the table
- Multi-attack checks or mass d20 rolls
- Compare results to the 31.5 average for 3d20
Other popular rolls
- Roll 13d8
- Roll 10d6
- Roll 12d8
- Roll 12d6
- Roll 10d12
- Roll 6d8
- Roll 8d6
- Roll 8d8
- Roll 15d8
- Roll 2d8
- Roll 13d6
- Roll 5d8
- Roll a d4
- Roll a d6
- Roll a d8
- Roll a d10
- Roll a d%
- Roll a d12
- Roll a d20
- Dice calculator — averages, odds, and custom notation
- Coin flip simulator (heads or tails)
Frequently asked questions
What is the average of 3d20?
The average of 3d20 is 31.5. Each d20 averages 10.5, so 3 × 10.5 = 31.5.
What is the minimum and maximum for 3d20?
3d20 ranges from 3 (all 1s) to 60 (all 20s).
How do I roll 3d20 with a modifier?
Type 3d20+3 (or use the modifier field) to add a bonus to the total — useful for damage riders and spell attack modifiers.