Almanauts
Elden Ring
Crafting materialVerified for build 25827938
Spirit Calculus

Spirit Calculus

Material used for crafting items

Type
Crafting material
Hold up to
999
Sells for
200 runes

In-game description

An exceedingly rare to find calculus, suffused with spirituality. Material used for crafting items.

Found by hunting horned beasts in the ancient ruins of Rauh.

Has a distinctive acrid odor, which some claim to be a sign of particular spiritual potency.

Used to craft 1

  • SpritestoneSpritestone · 1 × Rauh Burrow, 1 × Spirit Calculus, 1 × Beast Horn

Drop chance by Discovery

0%10%20%30%100180240300360400Discovery
The game raises only the drop slots it marks for Discovery, so the odds climb with it. Red Bear: 6% at 100, 20.3% at 400.
Show the numbers
DiscoveryChance per kill
1006%
20011.3%
30016.1%
40020.3%

Where to find Spirit Calculus

Placed in the world 5

  • Specimen Storehouse · Storehouse, Seventh Floor
  • Ancient Ruins of Rauh · Ancient Ruins, Grand Stairway · 2 spots
  • Ancient Ruins of Rauh · Viaduct Minor Tower · 2 spots

Dropped by 2

EnemyWhereChance per killKills for 90%
Red BearBossAncient Ruins of Rauh · Viaduct Minor Tower 6%38
  • Also enemies the game gives no name, up to 100% per kill · Rauh Base, Ancient Ruins of Rauh

At Discovery 100. "Once" drops stop after the first (the game sets a flag).

Track everything you've collected in the 100% checklist