Very simple multiclass spell slot calculator I made : rdndnext

DnD 5e Multiclassing: A Practical Guide spell slot calculator 5e Spell Slots You determine your available spell slots by adding together all your levels in the bard, cleric, druid, sorcerer, and wizard classes, and half your spellbinding mystery slot spell slots, cantrips known, and spell slot level You should consider aligning your Otherworldly Patron feature between both classes, but your DM might

spell slot calculator 5e CR Calculator · Encounter Generator To cast one of your artificer spells of 1st level or higher, you must expend a slot of the spell's level or higher