D20 RPG Combat Simulator

To Hit Bonus Notes
Classic editions of DnD uses an attack matrix to determine the number to roll.To covert to a to-hit bonus do the following:
Note the number need to-hit the lowest AC (9 or 10) at Level 1 (usually 1).
Note the current to-hit number for the lowest AC at the character's current level.
Subtract the Level 1 to-hit number from current level to-hit number. The result is the bonus to hit.
Note this doesn't account for ADnD use of repeated 20s.
Example: ADnD 10th level fighter has a Level 1 To-Hit AC 10 of 10. At 10th level it is 2. 10-2=8 for a +8 to-hit bonus

Descending AC Notes
Classic editions of DnD uses descending AC to covert to ascending AC do the following:
Note the base AC (9 or 10). Subtract the target's AC from the base AC and add 10.
Example: ODnD uses base AC of 9. AC 3 is (9-3)+10=16

Number of Attacks Notes
Valid Number of Attacks are '1', '3/2', '2', or any whole number higher than two.
Each attack has a separate to hit roll and will use the corresponding damage dice if specified.

Damage Dice Notes
Separate damage for different attacks by the '/' character
Currently supports XdY+Z format. No division or multiplication is supported.
If number of attacks exceeds number of different damage dice then the first one will be used for all subsequent attacks.

Default values setup for a ADnD 1st edition 10th level fighter wearing plate armor with average hit points and no bonus to damage.

If use Basic Criticals is selected then the following rules will be used.
- If a natural 20 is rolled double normal damage.
- If a natural 1 is rolled attack loses their next turn.


Alex
To-Hit Bonus:
Damage Bonus:
AC:
HP:
# of Attacks:
Damage Dice:
Brian
To-Hit Bonus:
Damage Bonus:
AC:
HP:
# of Attacks:
Damage Dice: