Blocks

A Block is a structure occupying space in a world.

A Bounding Box is a solid cuboid volume of space that the player is not meant to walk through. Entities have their own bounding box, but generally don't interfere with each other.

• It's not the same as a Hitbox, which is a cuboid that a player can interact with (attack, mine, right-click...).

• It also isn't the same as a Model, which is simply the graphical representation of a block / entity on screen.

For example: a button has no bounding box, as the player can walk through one, but has a hitbox which the player can click on.

Another example: a barrier block has overlapping bounding box and hitbox, but is hard-coded to have no model.

This article lists the bounding boxes and properties of all blocks in 1.8.

Blocks with particular properties and/or no bounding boxes are presented on their own articles.

Images were taken with Blockbench, or from the Minecraft wiki.

Simple Bounding Boxes

Blocks are ordered by length, then width, then height.

Block	Widths (b)	Height (b)	Comments	Model
Wall (4-sided)	1 × 1	1.5	Adjacent blocks must be solid, walls, or fencegates.
Default	1 × 1	1
Soulsand	1 × 1	0.875	Looks like a full block, but is actually 2 px lower. Slows down entities walking on top of it.
End Portal Frame	1 × 1	0.8125
Enchantment Table	1 × 1	0.75
Bed block	1 × 1	0.5625	The bottom doesn't look tangible, but it actually is.
Slab	1 × 1	0.5	Inversible.
Daylight Sensor	1 × 1	0.375
Trapdoor (horizontal)	1 × 1	0.1875	Inversible. Can be flipped to its vertical variant.
Repeater	1 × 1	0.125
Carpet	1 × 1	0.0625
Lily Pad	1 × 1	0.015625	Is ¼ of a pixel in height.
Snow Layer	1 × 1	0 0.125 0.25 0.375 0.5 0.625 0.75 0.875	Snow layers look 2 pixels higher than their real height. Despite having no height, a single layer of snow is tangible.
Anvil	1 × 0.75	1	Centered. Orientable (2 variants). Looks thinner than it actually is.
Piston Base (Powered)	1 × 0.75	1	Orientable (4 variants).
Wall (3-sided)	1 × 0.75	1.5	Orientable (4 variants). Adjacent blocks must be solid, walls, or fencegates.
Wall (2-opposite)	1 × 0.375	1.5	Centered. Orientable (2 variants). Adjacent blocks must be solid, walls, or fencegates. Placing a block on top of it doesn't change its bounding box, despite its appearance being different.
Fence (2-opposite)	1 × 0.25	1.5	Centered. Orientable (2 variants). Adjacent blocks must be solid, fences, or fencegates.
Fencegate	1 × 0.25	1.5	Centered. Orientable (2 variants). Can be flipped to a variant with no bounding box.
Trapdoor (vertical)	1 × 0.1875	1	Orientable, Inversible (8 variants). Can be flipped to its horizontal variant.
Door	1 × 0.1875	1	Orientable (4 variants). Can be flipped to another variant.
Ladder	1 × 0.125	1	Orientable (4 variants). Can be climbed by entities.
Pane (2-opposite)	1 × 0.125	1	Centered. Orientable (2 variants). Adjacent blocks must be solid, or panes/bars.
Chest (long)	0.9375 × 0.875	0.875	Must be next to another chest.
Dragon Egg	0.875 × 0.875	1	Centered. Looks drastically different from its bounding box.
Cactus	0.875 × 0.875	0.9375	Centered. Hurts entities close to it.
Chest	0.875 × 0.875	0.875	Centered.
Cake	0.875 × 0.875 0.875 × 0.75 0.875 × 0.625 0.875 × 0.5 0.875 × 0.375 0.875 × 0.25 0.875 × 0.125	0.5	The full cake is centered. Each bite takes away 0.125b from the West (-X)
Wall (2-adjacent)	0.75 × 0.75	1.5	Orientable (4 variants). Adjacent blocks must be solid, walls, or fencegates.
Wall (1-sided)	0.75 × 0.5	1.5	Orientable (4 variants). Adjacent block must be solid, a wall, or a fencegate.
Fence (1-sided)	0.625 × 0.25	1.5	Orientable (4 variants). Adjacent block must be solid, a fences, or a fencegate.
Wall (default)	0.5 × 0.5	1.5	Centered.
Cocoa (big)	0.5 × 0.5	Low: 0.1875 Top: 0.75	Orientable (4 variants). 1 pixel away from the wall it's attached to. Trivia: the top texture is only 7 pixels wide.
Head (walled)	0.5 × 0.5	Low: 0.25 Top: 0.75	Orientable (4 variants).
Head (default)	0.5 × 0.5	0.5	Centered. A head can be placed diagonally (16 variants total), but the bounding box doesn't change.
Pane (1-sided)	0.5 × 0.125	1	Orientable (4 variants). Appears 1 pixel longer than it really is. Adjacent block must be solid, or a pane/bar.
Cocoa (medium)	0.375 × 0.375	Low: 0.3125 Top: 0.75	Orientable (4 variants). 1 pixel away from the wall it's attached to.
Flowerpot	0.375 × 0.375	0.375	Centered.
Fence (default)	0.25 × 0.25	1.5	Centered.
Cocoa (small)	0.25 × 0.25	Low: 0.4375 Top: 0.75	Orientable (4 variants). 1 pixel away from the wall it's attached to.

Composite Bounding Boxes

"Except" represents an intangible zone rather than a tangible one.

Block	Widths (b)	Height (b)	Comments	Model
Stair (normal)	Base: 1 × 1 Top: 1 × 0.5	Base: 0.5 Top: 1	Orientable, Inversible (8 variants).
Stair (outer)	Base: 1 × 1 Top: 0.5 × 0.5	Base: 0.5 Top: 1	Orientable, Inversible (8 variants). Depends on adjacent stair blocks.
Stair (inner)	Base: 1 × 1 Except: -0.5 × -0.5	Base: 1 Except: -0.5	Orientable, Inversible (8 variants). Depends on adjacent stair blocks.
End Portal Frame (eye)	Base: 1 × 1 Eye: 0.375 × 0.375	Base: 0.8125 Eye: 1	The eye looks bigger than it is. (Appears 8 px in width, but is actually 6 px wide)
Hopper	Base: 1 × 1 Except: -0.75 × -0.75	Base: 1 Except: -0.375	The bottom doesn't look tangible, but it actually is. The interior floor is 1 pixel lower than it looks.
Cauldron	Base: 1 × 1 Except: -0.75 × -0.75	Base: 1 Except: -0.6875	The bottom doesn't look tangible, but it actually is. The interior floor is 1 pixel higher than it looks
Brewing Stand	Base: 1 × 1 Rod: 0.125 × 0.125	Base: 0.125 Rod: 0.875	The base looks very different from its bounding box.
Piston Head (Vertical)	Head: 1 × 1 Arm: 0.25 × 0.25	Head: 0.25 Top: 1	Centered. Inversible. The arm is shorter than it looks (0.75m height).
Piston Head (N/S/E)	Head: 1 × 0.25 Arm: 0.75 × 0.5	Head: 1 Arm-Low: 0.375 Arm-Top: 0.625	Orientable (3 variants). Accurate model. The arm is wider than it looks (0.5m width). The arm is shorter than it looks (0.75m length).
Piston Head (West)	Head: 1 × 0.25 Arm: 0.75 × 0.25	Head: 1 Arm-Low: 0.25 Arm-Top: 0.75	Bugged (fixed in 1.9). Accurate model. The player can walk through a west extended piston. In 1.9, piston heads were changed to match their model.
Fence (4-sided)	Post: 0.25 × 0.25 Sides: 0.375 × 0.25	1.5	Adjacent blocks must be solid, fences, or fencegates.
Fence (3-sided)	Post: 0.25 × 0.25 Sides: 0.375 × 0.25	1.5	Orientable (4 variants). Adjacent blocks must be solid, fences, or fencegates.
Fence (2-adjacent)	Post: 0.25 × 0.25 Sides: 0.375 × 0.25	1.5	Orientable (4 variants). Adjacent blocks must be solid, fences, or fencegates.
Pane (Default / 4-sided)	Sides: 0.5 × 0.125	1	Adjacent blocks must be solid, or panes/bars.
Pane (3-sided)	Sides: 0.5 × 0.125	1	Orientable (4 variants). Adjacent blocks must be solid, or panes/bars.
Pane (2-adjacent)	Sides: 0.5 × 0.125	1	Orientable (4 variants). Adjacent blocks must be solid, or panes/bars. The exterior corner has a 1px wide opening (despite the model showing a clean 90° corner).

Other

Block	Widths (b)	Height (b)	Comments	Model
Boat	1.5 x 1.5	0.6	Entity.