A Battle Calculator is a utility that allows players to view the outcome of a battle before they actually fight it. This is an essential tool for players planning an attack because it allows them to determine if they will make a profit before they send their hard-earned credits to fight. Battle Calculators can also be useful for fine-tuning fighter drops, which must be carefully planned or the attacker will either fail to accomplish their goal or throw away credits they did not need to.
Battle Calculators are legal to use in AE as they do not access any information from AE directly, it is entered by the user. It is important to remember that scripts that automatically take information from AE are against AE's ToS.
Most Battle Calculators have input fields for the attacking and defending players' technologies, command centers or commanders involved, and of course quantities of fleet and defenses involved. The Calculator will then display the final quantities of each ship and defense, the amount of debris created, and the credit losses on both sides.
It is important to note that, like any software, Battle Calculators may have glitches or bugs. This is compounded by the fact that the exact workings of the game's combat system are not known - they can only be guessed at by examining battle reports. Always have a back-up fleet on hand in case your finely tuned fleet fails its mission.