How do I open the downloaded world?

Open the .mcworld file and Bedrock imports it automatically, or unzip it into games/com.mojang/minecraftWorlds yourself.

How big can the model be?

There is no structure-block cap here, so builds far larger than 64 blocks work. Very high build sizes take longer to voxelize and use more browser memory.

Can I still edit the build afterwards?

Yes — it is an ordinary Bedrock save, so you can open it in creative and change anything.

Why does the model look smoother in my 3D tool?

Blocks are a fixed grid, so curved surfaces become stepped. Increasing the build size reduces the stepping at the cost of a larger world.

Convert .stl to .mcworld

See a CAD or printable model at full scale in Minecraft. Bloxelizer voxelizes your .stl in the browser and packages the blocks as a .mcworld you can open to import into Bedrock.

Free & unlimited

Runs in your browser

3D & layer previews

Drop a Minecraft schematic

orBrowse

We'll detect the format, let you view your build layer by layer in 2D / 3D, and let you export it to any format.

.schem

.litematic

.bp

.mcstructure

.nbt

.schematic

.mcstructurezip

.mcworld

.zip(Java world)

.prefab.json

.json

.glb

.gltf

.obj

.mtl

.stl

.bbmodel

.geo.json

.png

.jpg

.jpeg

.webp

Or paste a URL

The .stl and .mcworld formats

An .stl file is a triangle mesh with no colour or material information, produced by CAD tools, scanners, and 3D printing workflows. A .mcworld is a complete Bedrock Edition world: a zipped save containing a LevelDB block database and a level.dat. The conversion voxelizes the triangles into blocks, maps them to Bedrock, and writes them into a fresh world you can load and walk through.

How to convert .stl to .mcworld

Upload your .stl file in the converter below.

Choose the build size, rotation, and block palette in the preview panel, then apply.

Select .mcworld as the export format, download the world, and open it to import it into Minecraft Bedrock.

When to use this conversion

Use this route for large models — architectural exports, terrain scans, sculptures — where a structure block's size limit would get in the way and you just want to explore the shape in game.

Compatibility notes

Because .stl stores no colour, the palette you select decides how the build looks. The world is generated flat around the model, and very large build sizes are limited mainly by your browser's available memory.