Converter

Converter is an activated item.

Effects

 * Upon use, converts two Soul or Black Hearts into one full Heart Container.
 * Upon use, converts one Soul or Black Heart into one full Heart Container.

Synergies

 * : Allows Isaac to attain up to 10 Heart Containers and 1 Soul Heart.
 * Allows Isaac to attain up to 12 Heart containers.

Interactions

 * : Converts two Soul/Black Hearts into one Soul Heart, resulting in a net loss.
 * : Converts one Soul/Black Heart into one Soul Heart, making it only useful for getting rid of Black Hearts without lowering his health or for items that trigger when an active item is used.
 * with will remove one Soul Heart and grant two, effectively granting infinite health.
 * : No effect.
 * : Adds 1 Heart to her reserve at no cost in health, effectively giving her infinite blood charges.
 * : Converts Soul Hearts into Bone Hearts. Only works when controlling.
 * : Converts one Black Heart into one Black Heart, effectively keeping Judas’ health the same as before but activates effect regardless.
 * : No effect.

Trivia

 * The Converter is a reference to a converter, a device or system that changes the form of something.
 * According to Edmund via the Four Souls Isaac lore stream, the Converter's sprite was originally supposed to be similar to an adapter that converted US-standard power plugs for UK-standard power outlets, then he "just threw some wires on it."
 * The Converter can be seen as an opposite to . Where the Converter takes two Soul or Black Hearts to form a Heart container (or just one Soul or Black Heart as of Repentance), Guppy's Paw takes one Heart container to form three Soul Hearts. Additionally, their flavor texts are similar.

Seeds
1TNY 7MJ0 (1st floor Shop, Purchase after getting in 1st floor Treasure Room) Notes: Must be Isaac because a bomb is needed to get a key. The in the Curse Room must be picked up before entering the Shop. The Converter is inaccessible on the Hard mode seed due to the difficulty of getting a key to open the Shop. LGD3 W0PB (1st floor Shop, Purchase after getting Store Credit as a drop ) Notes: Converter is inaccessible on the Normal mode seed due to the difficulty of getting a key to open the shop. KEBM C08G (First-floor Shop, half price) (Coins are abundant in Hard mode, obtaining in Normal mode requires bombing shopkeeper and using Sacrifice Room)