How Do Warlock Spell Slots Work 5E?

Warlock spell slots work a little differently than those of other classes. When you get a new level in Warlock, you don’t automatically get new spell slots.

Instead, you can choose to replace one of your existing spell slots with a new one. This process is called “trading up.”.

The number of spell slots you have is determined by your level in Warlock. You start with two Spell Slots at 1st level, and as you level up you gain more.

The table below shows how many spell slots you have at each level.

Level Spell Slots
1st 2
2nd 3
3rd 4
4th 5
5th 6
6th 7
7th 8
8th 9
9th 10
10th 11
11th 12
12th 13
13th 14
14th 15
15th 16
16th 17
17th 18
18th 19
19th 20

Warlocks can use any type of spell slot they want when they trade up, but they can only trade up for a slot of equal or higher level. So if you’re a 3rd-level warlock, the earliest you could trade up is for a 4th-level slot.

And if you’re a 17th-level warlock, the highest-level slot you could trade for is an 18th-level slot.