In Minecraft, buried treasure chests usually generate only a few blocks below the surface, but in some cases they can be found as deep as around 40 blocks down.

How deep treasure chests can be

  • In typical beach biomes, buried treasure is usually just a few blocks under the sand, often around 3–6 blocks down from the surface.
  • In ocean biomes, the chest can end up on or just below the seafloor, which effectively makes it several blocks deeper relative to sea level.
  • Players and guides commonly report a practical depth range from about 5 blocks down to roughly 40 blocks in extreme cases, depending on terrain height and where the structure generates.

Practical digging tips

  • Most of the time, if you dig straight down 5–10 blocks from the marked spot on the buried treasure map, you will either hit the chest or at least expose one of its sides.
  • If you are not finding it, widen your search area horizontally instead of digging endlessly deeper; many players note that chests are “a few blocks away from the X” more often than they are very far down.
  • Terrain quirks (like hills, seafloor variations, or sandstone layers) can make a chest feel “too deep,” but it is still almost always within that approximate 5–40 block range.

Quick forum-style view

“They’re almost always a few blocks away from the X. Dig out a wider area, not deeper.”

“The treasure is typically buried only a few blocks deep—generally around 5 to 6 blocks, and definitely no more than 10.”

These community experiences line up with guide sites that still allow for rare deeper chests, up to around 40 blocks, especially in unusual terrain.

TL;DR: For “how deep can a treasure chest be in Minecraft,” expect usually 3–10 blocks down , with rare cases reported as deep as around 40 blocks depending on biome and terrain.

Information gathered from public forums or data available on the internet and portrayed here.