How Many Bookshelves for Level 30 Enchanting in Minecraft

You need 15 bookshelves around an enchanting table to get level 30 enchantments in Minecraft. Place them exactly two blocks away from the table, with one empty block between table and shelf, on the same level as the table or one block higher. With 15 or more shelves set up correctly, the bottom option always shows level 30.

Last checked: November 9, 2026. The formulas and placement rules below come from the game code and data in Java 26.3, the current release.

How do you make an enchanting table and bookshelves?

Fifteen bookshelves need 45 books, which means 135 paper and 45 leather. Sugar cane and a cow farm are worth setting up before you start. The table itself needs a diamond or netherite pickaxe for the obsidian.

How do you place bookshelves for level 30?

The game checks a fixed ring of spots around the table:

• Distance: each bookshelf must be exactly 2 blocks from the table on the X or Z axis, which forms a 5 by 5 ring with the table in the middle.
• Height: the ring counts on the table's own level and on the level directly above it, so there are 32 possible spots.
• The gap: the block halfway between the shelf and the table must be air or another replaceable block, such as grass, a snow layer or vines. A torch, carpet, slab or any solid block in the gap stops that shelf from counting.
• Corners count too. For a corner shelf, the game checks the diagonal block between it and the table.

Only 15 shelves are counted, so extra shelves do nothing. A simple layout that works every time:

1. Place the table.
2. Leave the 8 blocks around it empty.
3. Build a wall of bookshelves around that empty ring, 2 blocks high, leaving one gap as a doorway.

That gives you far more than 15 shelves, and you can walk in through the doorway.

How are the three enchanting levels chosen?

Each time you place an item, the table rolls a base number from your bookshelf count (capped at 15):

• Base = a random number from 1 to 8, plus half the shelves (rounded down), plus a random number from 0 to the number of shelves.
• Top slot = base divided by 3 (at least 1).
• Middle slot = two thirds of the base, plus 1.
• Bottom slot = the base or twice the shelf count, whichever is higher.

With 15 shelves, the base falls between 8 and 30, so the slots work out like this:

The bottom slot is always 30 because twice 15 is 30, and the base can never go above that.

How many levels does enchanting cost?

The number shown on a slot is the minimum level you need. The actual cost is only 1, 2 or 3 levels, plus 1, 2 or 3 lapis lazuli. So a level 30 enchant takes you from 30 down to 27.

Levels near 30 are expensive, which matters if you are short on XP:

Getting back from 27 to 30 takes more than 11 times as much XP as the first three levels. You still need level 30 to use the best slot, but it explains why an XP farm pays off.

Which items take the best enchantments?

Enchantability decides how many and how strong the extra enchantments are. Higher is better. These values come from the game's material definitions:

Gold gets the best rolls, but it wears out quickly. Diamond has fairly low enchantability, which is one reason level 30 diamond gear sometimes gets only one or two enchantments. A diamond item enchanted at 30 can still be upgraded to netherite at a smithing table, and the enchantments carry over.

Which enchantments can't you get from the table?

The table only offers non-treasure enchantments. These never appear there:

For Mending, the villager trading guide shows how to get it from a librarian.

Tips for better enchanting results

• Enchant books, then combine. You can enchant a plain book at the table and apply it at an anvil later. On Java, if a book rolls more than one enchantment, the game removes one of them at random, so books give fewer enchantments than tools.
• Reroll cheap. The offers stay the same until you enchant something. If you dislike all three options, spend 1 level and 1 lapis on the top slot with a book, and the next item you place gets a new set.
• Lower the level on purpose. You can block shelves with a torch or carpet in the gap to get a lower, cheaper bottom slot. This helps when an item keeps rolling a level 30 option you do not want.
• Plan your anvil order. Combining books and items in the wrong order makes the anvil cost climb fast and can hit "Too Expensive!". The enchantment order calculator works out the cheapest order for you, and the best enchantments table lists what to aim for on each item.

Frequently asked questions

How many bookshelves do you need for level 30 enchantments?

You need 15 bookshelves. With 15 shelves placed correctly, the bottom slot always shows level 30, and any shelves beyond 15 have no effect.

How far away do bookshelves need to be from an enchanting table?

Exactly two blocks away, with one empty or replaceable block between the shelf and the table. Shelves can sit on the table's level or one block above it.

Why is my enchanting table not reaching level 30?

Usually something is in the gap between the table and the shelves, such as a torch, carpet or slab, or some shelves are too far away. Count only the shelves 2 blocks out with clear air in between, and make sure there are at least 15.

Does enchanting at level 30 take 30 levels?

No. The bottom slot needs level 30 to use but only takes 3 levels and 3 lapis lazuli. You go from 30 to 27.

Can you get Mending from an enchanting table?

No. Mending is a treasure enchantment and never appears at the table. Get it from librarian villagers, fishing or chest loot instead.

Do extra bookshelves past 15 do anything?

No. The game caps the count at 15, so a bigger library looks nice but does not raise the level.