How to roll a d20
Open Free Roll with d20 selected, choose a modifier from −10 to +10, and press
the roll button. The DND dice roller displays the natural number, modifier, and
final result separately, so it is easy to roll d20 for an improvised table check.
Ability checks, attack rolls, and saving throws
These three modes always use d20. Choose the mode that matches the moment at the
table, set the modifier from the character sheet, and roll. The tool reports the
arithmetic without asking for a target or deciding an ordinary result for you.
Advantage and disadvantage
Advantage rolls two d20s and highlights the higher natural number. Disadvantage
highlights the lower. If both dice tie, both are highlighted. The modifier is
applied only after the highlighted natural result has been selected.
Damage rolls with multiple dice
Damage Roll accepts mixed d4, d6, d8, d10, d12, d20, and d100 groups. Add or
adjust up to 100 dice, then read each natural value and group subtotal. The
modifier is added once to the combined natural damage, never once per die.
What each DND die is used for
A d20 commonly drives checks, attacks, saves, and initiative. Other DND dice
often measure damage, healing, random tables, or class features: d4 and d6 cover
smaller ranges, while d8, d10, d12, and d100 support broader outcomes.
What dice do you need for DND?
A standard set contains d4, d6, d8, d10, d12, d20, and percentile dice. This page
includes all seven choices. Free Roll handles one standard die at a time, while
Damage Roll combines the groups needed by a spell, weapon, or feature.
Online dice vs physical dice
Physical dice offer a tactile table ritual; online dice are convenient for remote
games, quick preparation, and large damage pools. This DND dice roller generates
results locally with secure browser randomness, while reveal speed and sound
change presentation only.