Roll a d20
Free online d20 roller for D&D 5e. Roll attacks, checks, and saves with advantage, disadvantage, modifiers, and a roll log.
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.
The d20 is the core die of Dungeons & Dragons — attack rolls, ability checks, and saving throws all start with a twenty-sided die.
How to roll a d20
- Tap d20 in the quick-roll tray for an instant result.
- Or type notation like 1d20 or 2d20+3 and press Roll.
- Add modifiers, presets, or roll lines when you need a full turn of checks and damage.
- Open the full dice roller anytime for the complete tray and session log.
Common d20 uses
- Attack rolls (1d20 + attack bonus)
- Ability checks and skill checks
- Saving throws
- Initiative (1d20 + Dexterity modifier)
- Advantage (2d20kh1) and disadvantage (2d20kl1)
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
- Dice calculator — averages, odds, and custom notation
- Coin flip simulator (heads or tails)
Frequently asked questions
How do I roll with advantage?
Use the Advantage preset or type 2d20kh1 — roll two d20s and keep the highest. Disadvantage is 2d20kl1.
What is a natural 20 or natural 1?
A natural 20 is a 20 on the die before modifiers (often a critical hit on attacks). A natural 1 is a 1 on the die (often an automatic miss). This roller highlights both.