THAC0 is an acronym standing for “To Hit Armor Class 0”. It refers to the roll required for a character to score a hit on a hypothetical opponent with an armor class of zero, which in turn is used to calculate other attack rolls.
How is THAC0 calculated?
A simple formula for quickly calculating the success or failure of an attack roll using THAC0 is: THAC0 – (roll on a d20) = AC Hit. For example, if the attacker has a THAC0 of 17 and rolls a 15 on his or her To Hit roll, the attacker has succeeded in hitting if the target’s armor class is 2 or higher (2 or worse).
How does armor class work in AD&D?
It’s function hasn’t changed: the better (higher) your Armour Class, the harder you are to hit. When an attack is made, the attacker rolls a 1d20 and adds their attack bonus; if the result equals or exceeds the target’s Armour Class, the target is hit.
Is lower armor class better?
In Dungeons and Dragons, your armor class, or AC, represents your defense against attacks from monsters. NetHack borrows this concept; as in older editions of D&D, a lower AC is better than a higher one. A character with no armor or protection has AC 10.
How do you use Thaco?
Is lower Thaco better?
THAC0 is an acronym for To Hit Armor Class 0 (Zero). It is a number that represents the chances that a physical attack hit its target. Lower numbers are better.
What is your Armor Class without armor?
1 Answer. From the PHB p 14: Without armor or a shield, your character’s AC equals 10 + his or her Dexterity modifier. Keep in mind that this is simply the default way to calculate AC.
How do you calculate Armor Class?
Unarmored: 10 + your Dexterity modifier. Armored: Use the AC entry for the armor you’re wearing (see PH, 145). For example, in leather armor, you calculate your AC as 11 + your Dexterity modifier, and in chain mail, your AC is simply 16.
Is lower armor class better baldurs gate?
Yes, generally lower nummbers are better. Every character has a THAC0: To Hit Armor Class 0. Its the roll you need to hit someone whose armor class is 0. The lower your THAC0 the easier it is to hit someone in combat because it means you don’t need good rolls on the dice.
Do you need THAC0 for second edition monsters?
Yes, Second Edition monsters have THAC0. The Second Edition monster books were first the Monstrous Compendiums (looseleaf binders) and then later the Monstrous Manuals (hardbound). AD&D Second Edition came out in 1989. You appear to be looking at First Edition AD&D monster books (Monster Manual, Monster Manual II, Fiend Folio).
Is the hit bonus in THAC0 the same as in 5e?
Whereas table 1 would convert to a +8 hit bonus, the level 9 D&D 5e fighter has 1/2 this proficiency bonus of +4; so table 1 isn’t close to the same; i.e. this is not a simple inverse relationship (I can’t find any links, but I believe Mearls referred to a “flat math” when designing 5e).
How do you calculate THAC0 in adnd 1E?
First you need to calculate the characters to hit bonus. You take 10 and subtract what they need to hit AC 10 (10 is worst chance of hitting AC 10 which is a 0 level character in AD&D 1st). Then in combat you roll a d20 add the to hit bonus and add the Monster’s armor class if the roll totals 20 or more you hit.
How does THAC0 work in dungeons and Dragons?
In practice, most opponents do not have an armor class of zero. The target’s armor class is subtracted from the attacker’s THAC0 when determining a hit. For example, a character with a THAC0 of 14 must roll between 14 and 20 on a d20 to hit an opponent with AC 0. Against an opponent with AC6, he hits on a roll between 8 and 20 (14 − 6 = 8).
