Turn a base diameter and height into a centered Minecraft cone, one horizontal layer at a time. Compare a hollow roof shell with a solid cone, preview the finished shape in 3D, and gather the exact number of blocks before you build.
The highlighted slice is the next horizontal layer to place. Build Layer 1 on the tower or ground, then work upward.
A cone is not just a stack of guessed circles. The generator calculates the radius at every height, rasterizes that radius on Minecraft's square grid, and keeps all layers on the same centre so the roof reaches a balanced tip.
The material total comes from the displayed voxel layers rather than a smooth geometry estimate.
Move through every layer from the widest base to the final cap without losing alignment.
Use Hollow for practical roofs and interiors, or Solid for terrain, monuments and filled shapes.
Set the base diameter to the outside width of the round tower, platform or opening below the cone.
Use a shorter height for a broad roof or increase it for a sharper fantasy spire.
Most tower roofs need only the perimeter shell. Solid mode fills every circular slice.
Switch to Layers, build the displayed pattern, move up one block, then select the next slice.
A Minecraft cone is useful wherever a round footprint needs to narrow steadily toward a point. The common case is a tower roof, but the same layer plan also works for wizard spires, rockets, drill tips, circus tents, volcanoes, monument caps and pointed decorative forms. Because the height is independent from the diameter, the tool can produce a low roof or a narrow needle without stretching a picture by eye.
| Starting proportion | Appearance | Good for |
|---|---|---|
| Height ≈ ½ diameter | Broad and shallow | Large tower caps, low tents, volcano shoulders |
| Height ≈ ¾ diameter | Classic pointed roof | Castle turrets, watchtowers, pavilions |
| Height ≈ diameter | Tall cone | Fantasy roofs, rockets, dramatic monuments |
| Height > diameter | Narrow spire | Wizard towers, steeples, needles and finials |
Hollow is the practical choice for a Minecraft cone roof. It keeps the outside edge of every horizontal circle and removes the hidden centre, saving a large amount of material while leaving space for rooms, lighting and stairs. The generated shell is one block thick around each ring. You can add beams or a centre mast later without changing the outside silhouette.
Solid mode fills each circular layer. It is useful when the cone itself is the mass of the build: a terrain mound, volcano core, drill bit, sculpture or monument. Solid cones consume far more blocks, so check the live stack count before committing in survival mode.
Choose the tool by how the surface changes. A cone reduces its circular radius at a steady rate and ends at a point. A Minecraft dome follows the curved upper half of a sphere, so it begins steep near the base and becomes flatter toward the top. A rectangular Minecraft roof uses gable, hip, shed, gambrel or barrel-style geometry over straight walls. Keeping these as separate generators gives each shape the correct layers instead of presenting the same blueprint under several names.
If the cone sits on a tower, first use the Minecraft Circle Generator to establish the foundation and wall ring. Enter the same outside diameter here so the first cone layer lands cleanly on the wall. For an even diameter, mark the two-block centre carefully; odd diameters have one obvious centre block and are usually easier to mirror.
A mathematically smooth cone can shrink by a fraction of a block on every level, but Minecraft blocks have fixed integer positions. Several adjacent layers may therefore share the same visible width before the next inward step. That repetition is correct: it is how a continuous taper becomes a stable voxel shape. The layer readout reports the occupied width of the selected blueprint so you can anticipate each change.
Choose a base diameter and target height, switch to Layers, and build from Layer 1 upward. Keep every layer aligned to the same centre and complete each circular pattern before moving up one block.
Yes. Hollow mode keeps the outside edge of each layer and leaves the interior open. It is the recommended setting for tower roofs, spires and builds with usable rooms inside.
A height around two-thirds to one times the base diameter is a good starting range. Shorter ratios look broad, while a height greater than the diameter creates a narrow spire.
The ideal radius often changes by less than one block between neighbouring heights. Rounding that smooth measurement to a block grid means two or more layers can use the same footprint before the next step inward.
Yes. The output is a visual block-by-block blueprint with no mod or command dependency, so the same layer shapes work in Java, Bedrock and console editions.
No. A cone narrows at a steady rate toward one point. A dome follows a spherical curve, so its change in radius is not linear.