For data values on mods that add new items, see Mod data values
These data values refer to the different types of blocks and items. They are used in many, many places in Minecraft. Block IDs are used to define blocks placed in the world and inventory items (including items in chests and items dropped in the world). Item IDs are only valid for items. Each inventory slot has a unique slot number. In an Alpha world, Block data further defines blocks placed, describing for example the height of water or the direction a torch points.
Alpha picture reference in 3D
Alpha picture reference in 2D
Block IDs
These values apply to both inventory items and to blocks placed in the world. Bold entries are not available in Alpha and italics entries are not available in Classic. Entries marked with a D require additional data to fully define the block in an Alpha world. Entries marked with an I have a different ID as an inventory item.
| Icon | Dec | Hex | Block type |
|---|---|---|---|
| File:Woodendoor.png | 64 | 40 | Wooden Door D I |
| File:Ladder flat.png | 65 | 41 | Ladder D |
| File:Rail track.png | 66 | 42 | Minecart Tracks D |
| File:Cobblestonestairs.png | 67 | 43 | Cobblestone Stairs D |
| File:Wallsign.png | 68 | 44 | Wall Sign D |
 |
69 | 45 | Lever D |
| File:StonePressurePlate.png | 70 | 46 | Stone Pressure Plate D |
| File:Irondoor.png | 71 | 47 | Iron Door D I |
| File:WoodPressurePlate.png | 72 | 48 | Wooden Pressure Plate D |
| File:Red.PNG | 73 | 49 | Redstone Ore |
| File:Red.PNG | 74 | 4A | Glowing Redstone Ore |
| File:Redstonetorchoff.png | 75 | 4B | Redstone torch ("off" state) D |
 |
76 | 4C | Redstone torch ("on" state) D |
| File:Stonebutton.png | 77 | 4D | Stone Button D |
| File:Snowblock96.png | 78 | 4E | Snow |
 |
79 | 4F | Ice |
| File:SnowBlockImage.png | 80 | 50 | Snow Block |
 |
81 | 51 | Cactus |
| File:ClayBlock.png | 82 | 52 | Clay |
 |
83 | 53 | Reed |
 |
84 | 54 | Jukebox |
| File:FencePair.png | 85 | 55 | Fence |
 |
86 | 56 | Pumpkin |
| File:Bloodstone.png | 87 | 57 | Netherstone |
| File:Slowsand.png | 88 | 58 | Slow Sand |
| File:Lightstone.png | 89 | 59 | Lightstone |
| File:Portal.png | 90 | 5A | Portal |
| File:Pumpkin-on.png | 91 | 5B | Jack-O-Lantern |
Item IDs
All items have values above 255, making it easy to separate the Block IDs from the Item IDs.
| Icon | Dec | Hex | Item |
|---|---|---|---|
| File:Greenrecord.png | 2257 | 8D1 | Green Record |
Inventory Slot Number
Data
Special data for certain block types. Storage differs according to level format.
| Block | dec | hex | Use |
|---|---|---|---|
| Saplings | 0-15 | 0-F | Age |
| Cactus | 0-15 | 0-F | Age |
| Water and Lava | 0-15 | 0-F | Fluid level |
| Soil | 0-8 | 0-8 | Wetness |
| Crops | 0-7 | 0-7 | Crop size |
| Torches and Redstone Torches | 0-5 | 0-5 | Torch orientation |
| Redstone | 0-15 | 0-F | Current strength |
| Minecart Tracks | 0-9 | 0-9 | Rail slope and orientation |
| Stairs | 0-3 | 0-3 | Stair orientation |
| Levers | 6-14 | 6-E | Lever orientation and thrown state |
| Doors | 0-15 | 0-F | Hinge corner position and swing state |
| Buttons | 0-15 | 0-F | Button orientation |
| Sign Posts | 0-15 | 0-F | Sign orientation |
| Wall Signs | 2-5 | 2-5 | Sign orientation |
Saplings
0x0 is a freshly planted sapling. The data value is incremented at random intervals. When it becomes 15, a new tree is created in its place.
Cactus
0x0 is a freshly planted cactus. The data value is incremented at random intervals. When it becomes 15, a new cactus block is created on top as long as the total height does not exceed 3.
Water and Lava
0x0 is a full block. Water goes up to 0x7, Lava can only go up to 0x3. If bit 0x8 is set, this liquid is "falling" and only spreads downward.
Soil
0x0 is dry land, 0x1-0x8 are increasing levels of wetness. The wetness value depends on how far the block is away from water.
Crops
Crops grow from 0x0 to 0x7 (Pictured below).
Torches and Redstone Torches
- 0x1: Pointing south
- 0x2: Pointing north
- 0x3; Pointing west
- 0x4: Pointing east
- 0x5: Standing on the floor
Minecart Tracks
- 0x0: flat track going north-south
- 0x1: flat track going east-west
- 0x2: track ascending to the south
- 0x3: track ascending to the north
- 0x4: track ascending to the east
- 0x5: track ascending to the west
Make a circle from four rails:
- 0x6: Northeast corner
- 0x7: Southeast corner
- 0x8: Southwest corner
- 0x9: Northwest corner
Ladders
- 0x2: Attached to the east side of a block
- 0x3: West side of a block
- 0x4: North side
- 0x5: South side
Stairs
- 0x0: Ascending south
- 0x1: Ascending north
- 0x2: Ascending west
- 0x3: Ascending east
Levers
- 0x8: If this bit is set, the lever has been thrown and is providing power.
Wall levers:
- 0x1: Facing south
- 0x2: Facing north
- 0x3: Facing west
- 0x4: Facing east
Ground levers:
- 0x5: Lever points west when off.
- 0x6: Lever points south when off. (Note that unlike the other types of switch, this version will not power wires around the block it is sitting on.)
Doors
- 0x8: If this bit is set, this is the top half of a door.
- 0x4: If this bit is set, the door has swung counterclockwise around its hinge.
Location of hinge within block:
- 0x0: Northeast corner
- 0x1: Southeast corner
- 0x2: Southwest corner
- 0x3: Northwest corner
Buttons
- 0x8 If this bit is set, the button has been pressed. If this bit is set in a saved level, the button will remain pressed for an undefined length of time after the level is loaded.
Button direction:
- 0x1: Facing south
- 0x2: Facing north
- 0x3: Facing west
- 0x4: Facing east
Sign Posts
- 0x0: West
- 0x1: West-Northwest
- 0x2: Northwest
- 0x3: North-Northwest
- 0x4: North
- 0x5: North-Northeast
- 0x6: Northeast
- 0x7: East-Northeast
- 0x8: East
- 0x9: East-Southeast
- 0xA: Southeast
- 0xB: South-Southeast
- 0xC: South
- 0xD: South-Southwest
- 0xE: Southwest
- 0xF: West-Southwest
Wall Signs
- 0x2: Facing east
- 0x3: Facing west
- 0x4: Facing north
- 0x5: Facing south
Pressure Plates
- 0x1: If this bit is set, the plate is pressed.