D&D 5e Spell Slots by Class and Level

Full-caster spell slots by level

Full casters

Bard, Cleric, Druid, Sorcerer, and Wizard are the full casters, and they all share the single progression in the table above. They start with two 1st-level slots at character level 1 and unlock a new spell level every couple of levels, reaching their first 9th-level slot at character level 17. This is also the table used to work out a multiclass spellcaster’s combined slots.

Half casters

Paladin and Ranger are half casters. Their spellcasting does not come online until character level 2, and their slots climb at about half the pace of a full caster, capping at 5th-level slots rather than 9th. A level 5 Paladin, for instance, has the slots a full caster had around level 3. The Artificer is a similar case with its own slight variation.

Third casters

The Eldritch Knight (Fighter) and Arcane Trickster (Rogue) subclasses are third casters. They pick up spellcasting at subclass level 3 and advance the slowest of all, topping out at 4th-level slots at high levels. Their tiny slot pools make each spell precious.

Warlock Pact Magic

Warlocks sit outside this system entirely. Pact Magic gives them only a small number of slots (one to four across their career), but every slot is cast at the highest level available to them, and the slots come back on a short rest, not just a long rest. That short-rest recharge is why Warlocks can spend freely between fights while other casters ration their long-rest slots.

How Adventure Codex handles it

In Adventure Codex you set up one consumable per spell level and mark it for long-rest recovery, so each slot shows as a pip you tap to cast. Warlock Pact Magic fits the same model with short-rest recovery instead, and a rest refills the right slots automatically, so the count is always correct on your turn.