Binding of Isaac: Rebirth Wiki
Binding of Isaac: Rebirth Wiki

Converter is an activated item.



  • Using this item on Black Hearts will activate the Black Hearts damaging effect.
  • Removed in Repentance Must use with two full Soul Hearts to work. One and a half will not work.


  • Added in Repentance Dark Judas Dark Judas: Soul hearts get converted into Black Hearts.
  • Removed in Repentance15►Guppy's Paw Guppy's Paw: Allows Isaac to attain up to 10 Heart Containers and 1 Soul Heart.
    • Added in Repentance Allows Isaac to attain up to 12 Heart containers.


  • Removed in Repentance ??? ???: 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 Added in Repentance15►Birthright Birthright will remove one Soul Heart and grant two, effectively granting infinite health.
  • Bethany Bethany: No effect.
  • Added in Repentance15►Book of Virtues Book of Virtues: Spawns wisps in the middle ring, looking like hearts. Wisps have slightly higher health than average.
  • Added in Afterbirth15►Car Battery Car Battery: No effect.
  • The Forgotten The Forgotten: Converts Soul Hearts into Bone Hearts. Only works when controlling The Soul The Soul.
  • Tainted Bethany Tainted Bethany: Adds 1 Heart to her reserve at no cost in health, effectively giving her infinite blood charges.
  • Tainted Judas Tainted Judas/Dark Judas Dark Judas: Converts one Black Heart into one Black Heart, effectively keeping Judas’ health the same as before but activates 15►The Necronomicon The Necronomicon effect regardless.

In-game Footage[]



  • 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 15►Guppy's Paw Guppy's Paw. 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.


PC Normal mode only 1TNY 7MJ0 (1st floor Shop, Purchase after getting 15►A Quarter A Quarter in 1st floor Treasure Room)
Notes: Must be Isaac because a bomb is needed to get a key. The 15►Pandora's Box Pandora's Box 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.

PC LGD3 W0PB (1st floor Shop, Purchase after getting Store Credit Store Credit as a drop Hard mode only)
Notes: Converter is inaccessible on the Normal mode seed due to the difficulty of getting a key to open the shop.

Switch KEBM C08G (First-floor Shop, half price) (Coins are abundant in Hard mode, obtaining in Normal mode requires bombing shopkeeper and using Sacrifice Room)