Master your multiclass builds in Baldur’s Gate 3. This spell slot calculator uses official 5e-based multiclassing rules to determine exactly how many slots you gain per level across Wizard, Paladin, and other magic-infused classes.
BG3 Spell Slot Calculator
BG3 Spell Slot Calculator Formula:
Variables Explained:
- Full Casters: Classes like Wizard or Cleric contribute their full level to spell slots.
- Half Casters: Paladins and Rangers contribute half their level (rounded down).
- Third Casters: Eldritch Knights and Arcane Tricksters contribute one-third of their level (rounded down).
Related Calculators:
- BG3 Proficiency Bonus Calculator
- D&D 5e Encounter Difficulty Tool
- Ability Score Modifier Calculator
- BG3 Armor Class (AC) Optimizer
What is the BG3 Spell Slot Calculator?
The Baldur’s Gate 3 (BG3) spell slot calculator is a vital tool for players who enjoy “multiclassing.” In BG3, mixing different magic-using classes doesn’t simply add their levels together for spell slots. Instead, it follows a specific mathematical weighting system derived from Dungeons & Dragons 5th Edition rules.
Using this calculator ensures you don’t waste levels. For example, a Level 1 Paladin provides zero spellcasting progression until Level 2, meaning a Wizard 11 / Paladin 1 build has the same spell slots as a pure Level 11 Wizard, whereas a Wizard 10 / Paladin 2 gains the slots of a Level 11 caster.
How to Calculate BG3 Spell Slots (Example):
- Determine your level in each “Caster Tier.”
- Apply the weighting: Level 6 Cleric (Full) = 6; Level 4 Paladin (Half) = 2; Level 3 Rogue (Third) = 1.
- Sum the values: 6 + 2 + 1 = 9.
- Refer to the Level 9 Spellcaster table to find your slots (4/3/3/3/1).
Frequently Asked Questions (FAQ):
No. Warlocks use “Pact Magic,” which is entirely separate from the standard Spellcasting feature. Warlock slots do not stack with other classes’ slots.
Baldur’s Gate 3 rounds DOWN for each individual multiclass contribution before adding them together.
Yes, as long as your total “Effective Level” reaches 11 or 12, you will have 6th level spell slots, even if you don’t have level 6 spells known.
The total character level in BG3 is capped at 12.