Thaco (To Hit Armor Class 0)

Thaco, which stands for "To Hit Armor Class 0," is a metric used in classic tabletop role-playing games to determine how easily a character can land an attack. It represents the minimum dice roll needed to hit an opponent with an Armor Class of 0. To calculate whether an attack hits, you roll the dice, add your attack bonus, and compare it to the opponent’s Thaco; if the total is equal or higher, the attack succeeds. Thaco simplifies combat calculations by providing a single number that adjusts as characters improve, making it straightforward to assess attack success across different scenarios.