Blast Protection

Blast Protection is a rare armor enchantment in Minecraft 1.21. Blast Protection guards specifically against explosions, softening the damage from creepers, TNT, beds in the wrong dimension, and the wither's blasts, while also reducing the knockback they throw at you.

Its opening level already delivers a noticeable boost — 8% explosion damage reduction, -15% explosion knockback — and it climbs from there to a maximum of level 4 (IV) on your chestplate.

Blast Protection tops out at level 4, shown as IV on the chestplate, and the gap between the levels is where the enchantment's character really lives.

Each of its four levels cuts 8% of explosion damage, up to 32% on one piece, and additionally trims explosion knockback by about 15% per level. A full set therefore both keeps you alive through a creeper hit and stops it from launching you off a ledge.

Blast Protection can be placed on helmet, chestplate, leggings and boots, giving you a handful of choices for where it does the most good depending on how you play.

Blast Protection cannot share an item with Protection, Fire Protection and Projectile Protection. All of these sit in the same mutually-exclusive group as Blast Protection, so an item can wear only one of them at once and you choose which playstyle to commit to.

Blast Protection can be rolled directly at an enchanting table, where reaching its top level of IV on a chestplate generally wants a fully bookshelf-powered table at roughly level 8. Should the table prove stingy with Blast Protection, you can instead source the book from loot chest and villager trading and anvil it on.

Its selection weight of 2 makes Blast Protection a rare roll: it surfaces only now and then on a chestplate, so you may need to re-roll several times or simply trade a villager for the book.