A tool designed to estimate the typical amount of harm inflicted by an attack in the Dungeons & Dragons role-playing game, factoring in dice rolls, modifiers, and critical hits. For instance, a character wielding a longsword (1d8 slashing damage) with a +3 Strength modifier would have an average damage calculation of 7.5 (4.5 from the d8 average roll + 3).
This estimation offers a means to compare the effectiveness of different weapons, spells, or character builds. It allows players and game masters to assess potential combat outcomes, optimize character strategies, and balance encounters. Historically, such calculations were performed manually, but dedicated digital tools streamline the process, providing quick and accurate results.