This tool does not calculate class progression or multiclass spell slots for you. Enter the spell slots shown on your current character sheet, then allocate the casts you expect to spend.
Slot budget
Level 1
Level 2
Level 3
Level 4
Level 5
Level 6
Remaining slots
Why enter slots manually
BG3 slot progression depends on class level and multiclass structure. Manual entry keeps this planner useful without pretending every caster follows the same table.
Budget for the encounter, not the whole day
Use the planner before a boss or difficult area to decide which spell levels you want to preserve for control, burst, defense or recovery.
Concentration is a separate constraint
Having enough spell slots does not mean several concentration spells can stay active at once. Use the Concentration Loadout Checker for that part of the plan.