Debug screen


Info

Trivia

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Legend

When displaying reduced debug info, only the starred items are included.

Name Description
fps* The frame rate (also known as frame frequency) is the frequency rate at which a video device produces unique consecutive images called frames. Frames are still pictures that when sequence together form a fluid animation that is the basis for all moving media. Frame rate is most often expressed in frames per second (FPS).
chunk updates* Chunk updates are the number of 1-block spaces which have changed its state or content in the last second. This change in state can be caused by the addition or subtraction of blocks from the map, sugarcane growing, water or lava flowing, redstone contraptions, loading/unloading chunks, and more. Chunk updates are usually high right after map generation.
C* Number of chunk sections rendered over total number of chunks. Counts all render passes: if a chunk section is rendered twice (because it contains both water and normal blocks, for example) then it will be counted twice.
D* Client-side render distance
pC* Pending chunks to be batched
pU* Pending uploads to video card
aB* Available buffers to use in the batching process
F* Number of chunk sections loaded outside the viewing distance. Counts all render passes.
O* Number of chunk sections removed through occlusion culling. Counts all render passes.
E* Number of rendered entities over total entities
B* Unused, always 0. May previously have been the number of entities removed due to hidden chunks
I* Number of invisible entities
P* Number of particles on screen
T* Shows your max framerate (⃢₀ₜinf" if Unlimited) and your Graphics type (⃢₀ₜfast" if Fast and none if Fancy), including cloud settings ("fast-clouds" if Fast, "fancy-clouds" if Fancy and none if clouds are off).
All* Displays total number of loaded entities (including mobs and dropped items)
MultiplayerChunkCache* The most chunks that will be loaded
XYZ X: Player`s location in blocks East of 0,0 (negative values are to the West)

Y: Player`s (feet) altitude in blocks (63 (62.9) is overworld The Overworld, as seen in an extreme hills and a forest biome The Overworld is the dimension in which all players begin their Minecraft journey. Contents 1 Creation 1.1 Seeds 2 Environment 2.1 Biomes 2.2 minecraft sea level, 11 (10.9) is overworld lava flood level, 32 (31.9) is nether Nether may refer to: The Nether, a hell-like dimension, filled with fire, lava, and dangerous mobs. Advancements#Nether, an advancement by entering the Nether dimension. This disambiguation page lists articles associated with the same title. If lava sea).
Z: Player`s location in blocks South of 0,0 (negative values are to the North)

Block The coordinates of the block the player`s feet are in, in xyz format. Very similar to XYZ as above, excluding digits after the decimal point.
Chunk* The location of the player within a chunk, and the location of the chunk within the world. In reduced mode, only the location within the chunk is displayed.
Facing The direction in which a player is facing. Towards Positve X/Z indicates the player`s alignment towards the x/z axis. The two numbers at the end indicate the player`s horizontal (azimuthal) and vertical (altitudinal) rotation.
Biome A river bisecting a jungle biome. At the top right is a forest. A river running through a mesa biome with mesa plateaus, with a savanna biome in the bottom right. “ In case you minecraft Shows you what Biome A river bisecting a jungle biome. At the top right is a forest. A river running through a mesa biome with mesa plateaus, with a savanna biome in the bottom right. “ In case you minecraft you are in.
Light The first number is the total light level where your feet are. Note that there are a few caveats here due to the sky light level showing the light level the block would get from the sun in full daylight, but does not account for the lower light levels at night or during a storm.

The second number is the amount of light from the sky at the block your feet are in. Same caveat as above.
The third number is the amount of light Light (or lighting) in Minecraft affects visibility, mob spawning, and plant growth. Contents 1 Brightness 1.1 Spread 2 Sources of light 2.1 Blocks 2.2 Other 3 Light-filtering blocks 4 Effects of light 4.1 Mobs 4.2 minecraft from other blocks (e.g. torches Torch Transparency Yes Luminance 14 Blast resistance 0 Tool Any tool Renewable Yes Stackable Yes (64) Flammable No Drops Itself Data value dec: 50 hex: 32 bin: 110010 Name torch See the common light-emitting torch. minecraft ) at the block your feet are in.

Local Difficulty Shows the difficulty of the chunk the player is in. See Difficulty Mobs in full armor are a common sight in higher difficulty levels. Difficulty is an option in Minecraft that has a direct impact on the ease of gameplay. Contents 1 World setting 1.1 Peaceful 1.2 minecraft on how this works. Followed by the amount of in-game days the player has been in the world, see Day-night cycle for more information.
Looking at Shows the co-ordinates of the block the player is looking at. If the player is not looking at any block, this entry does not appear.

Profiler graph

Pie charts in the lower right of the ⃢₇₧ Shift+F3 debug screen display real time profiling information. More detailed information about one section can be displayed by using the keys 1-9. Press 0 to go back to the previous section.

Frame time graph

Bar chart in the lower left of the Alt+F3 debug screen displays real time measurement of seconds per frame with lines marking 1/60s and 1/30s per frame. The graph is color coded from green to yellow to red, with green being faster frame time, red being slower frame time, and yellow in between.

More debug-keys

Text will be shown in chat for most debug keys listed here. Note that when using a specific key combination like F3+N, F3+B, etc., the debug screen will not open.

When the reducedDebugInfo gamerule is set to true, the effects of F3+B (entity hitboxes) and F3+G (chunk boundaries) will not be shown.

History

The debug information from Indev, Infdev, and early Alpha.
Indev Indev Starting version 0.31 (Dec. 23, 2009) Latest version Minecraft Indev (Feb. 23, 2010) Paid Yes This page contains content that is no longer in the game. These featuresSpecial attraction only exist in outdated versions of minecraft
? The debug screen only had what we recognize as “the top part with all the numbers". This debug screen was not activated with F3, but as a toggle in the options.
Alpha Alpha Starting version Alpha 1.0.0 (Jun. 28, 2010) Latest version Alpha 1.2.6 (Dec. 3, 2010) Paid Yes Alpha versions 1.0.0 to 1.2.6 are available to play in the launcher. Be that as it may, please note that these versions minecraft
1.1.0 Alpha 1.1.0 Official name Seecret Friday 9 Server version 0.2.0 Release date Sep. 10, 2010 Download Client Server Other editions of 1.1.0 Pocket Edition ◄◄ Alpha 1.0.0 ◄ Alpha 1.0.17_04 Alpha 1.1.1 ► Alpha 1.2.0 minecraft The debug screen was no longer listed as an option and required F3 to be held down to activate.
1.2.3 Alpha 1.2.3 Server version 0.2.5 Release date Nov. 24, 2010 Download Client Server Other editions of 1.2.3 Java Edition ◄◄ Alpha 1.2.0 ◄ Alpha 1.2.2 Alpha 1.2.3_01 ► Beta 1.0 ►► See minecraft The coordinates were added to the debug screen.
Beta Beta Starting version Beta 1.0 (Dec. 20, 2010) Latest version Beta 1.9-pre6 (Nov. 13, 2011) Paid Yes These versions are available to play in the launcher. Be that as it may, please note that these versions contain bugs. You ll minecraft
1.3 Beta 1.3 Release date Feb. 22, 2011 Download Client Server Other editions of 1.3 Java Edition ◄◄ Beta 1.2 ◄ Beta 1.2_02 Beta 1.3_01 ► Beta 1.4 ►► See the computer edition. minecraft The debug screen, along with other function key controls, became a toggle.
When the debug screen was open, it would show numbers above every mob; these numbers being the mob`s Entity ID. These were visible through blocks, making F3 a very useful mob-finder.
1.7 Beta 1.7 Release date Jun. 30, 2011 Download Client Server Other editions of 1.7 Java Edition ◄◄ Beta 1.6 ◄ Beta 1.6.6 Beta 1.7.1 ► Beta 1.8 ►► See the computer edition. minecraft The "f" coordinate was made visible in the debug screen (facing direction).
1.8 Beta 1.8 Official name Adventure Update (Part 1) Release date Sep. 15, 2011 Development versions View all Pre-releases Beta 1.8-pre1 Beta 1.8-pre2 Download Client Server Other editions of 1.8 Java Edition ◄◄ Beta 1.7 ◄ minecraft The ability to see the level`s seed See the level generation seed. For other uses, see Seeds (disambiguation). Minecraft seeds are values made up of character(s) (including negative or positive integers) that are used as the basis for generating was added.
Removed entity numbers being shown above mob`s head. Some players felt that it was cheating and that it took away from the game.
Official releaseAnnounce Minecraft 1.0 Starting version 1.0.0 (Nov. 18th, 2011) Latest version 1.12 Paid Yes Website http://www.minecraft.net/ See the official release of Minecraft for the PC. For the version, see 1.0.0. For the first minecraft
1.2.1 1.2.1 Release date Mar. 1, 2012 1] Development versions View all Snapshots 12w03a 12w04a 12w05a 12w05b 12w06a 12w07a 12w07b 12w08a Pre-releases 1.2-pre Download Client (.json) Server Other editions of 1.2.1 Java Edition Alpha ◄◄ 1.1 minecraft 1.2-pre Information about the biome and light level of the player`s location were added. The seed in multiplayer was made hidden, showing as "0".
1.2.4 1.2.4 Release date Mar. 22, 2012 1] Download Client (.json) Server Other editions of 1.2.4 Java Edition Alpha ◄◄ 1.2.1 ◄ 1.2.3 1.2.5 ► 1.3.1 ►► See the computer edition. For other minecraft Pressing F3 (Fn+F3 on Mac and some laptops) brings up the debug screen but without the graphs. The graph will appear on pressing ⇧ Shift+ F3 (Fn+ ⇧ Shift + F3 on Mac and some laptops).
1.3.1 1.3.1 Release date Aug. 1, 2012 Development versions View all Snapshots 12w15a 12w16a 12w17a 12w18a 12w19a 12w21a 12w21b 12w22a 12w23a 12w23b 12w24a 12w25a 12w26a 12w27a 12w30a 12w30b 12w30c 12w30d 12w30e Pre-releases 1.3-pre 1.3.1-pre Download Client minecraft 12w18a 12w18a Type Snapshot Release date May 3, 2012 1] Snapshot for 1.3.1 Download Client Server .exe ◄◄ 1.2.5 ◄ 12w17a 12w19a ► 1.3.2 ►► See the computer edition. For other editions, see minecraft Information about the player`s speed and whether the player is touching the ground were added.
Coordinates are now rounded to 5 digits.
12w21a 12w21a Type Snapshot Release date May 24, 2012 1] Snapshot for 1.3.1 Download Client Server .exe ◄◄ 1.2.5 ◄ 12w19a 12w21b ► 1.3.2 ►► See the computer edition. For other editions, see minecraft Information about the world`s seed was removed, seen instead by pressing the chat key and typing "/seed".
1.4.2 1.4.2 Official name Pretty Scary Update Release date Oct. 25, 2012 1] Development versions View all Snapshots 12w32a 12w34a 12w34b 12w36a 12w37a 12w38a 12w38b 12w39a 12w39b 12w40a 12w40b 12w41a 12w41b 12w42a 12w42b Pre-releases 1.4-pre 1.4.1-pre minecraft 12w39a 12w39a Type Snapshot Release date Sep. 27, 2012 1] Snapshot for 1.4.2 Download Client Server .exe ◄◄ 1.3.2 ◄ 12w38b 12w39b ► 1.4.4 ►► See the computer edition. For other editions, see minecraft Fl, x and z chunk coordinates, and more rotation (f) information were added.
12w41a 12w41a Type Snapshot Release date Oct. 11, 2012 1] Snapshot for 1.4.2 Download Client Server .exe ◄◄ 1.3.2 ◄ 12w40b 12w41b ► 1.4.4 ►► See the computer edition. For other editions, see minecraft Shift+F3 now shows the profiler graph.
1.8 Beta 1.8 Official name Adventure Update (Part 1) Release date Sep. 15, 2011 Development versions View all Pre-releases Beta 1.8-pre1 Beta 1.8-pre2 Download Client Server Other editions of 1.8 Java Edition ◄◄ Beta 1.7 ◄ minecraft 14w02a 14w02a Type Snapshot Release date Jan. 9, 2014 Snapshot for 1.8 Download Client (.json) Server ◄◄ 1.7.10 14w02b ► 1.8.1 ►► See the computer edition. For other editions, see Version history (disambiguation). minecraft Now shows which axis you are facing after the cardinal direction: "Towards positive/negative X/Z".
14w04a 14w04a Type Snapshot Release date Jan. 23, 2014 Snapshot for 1.8 Download Client (.json) Server ◄◄ 1.7.10 ◄ 14w03b 14w04b ► 1.8.1 ►► See the computer edition. For other editions, see Version minecraft The crosshair will display 3 short colored lines to indicate the direction of each axis: x/red, y/green, z/blue.
The x coordinate line will now be bold when looking east/west, similarly the z coordinate line will now be bold when looking south/north.
14w05a 14w05a Type Snapshot Release date Jan. 30, 2014 1] Snapshot for 1.8 Download Client (.json) Server ◄◄ 1.7.10 ◄ 14w04b 14w05b ► 1.8.1 ►► See the computer edition. For other editions, see minecraft Text now has a background.
Replaced x, y, z, b, bl and other labels with more understandable labels.
"Light" is now the light levels at feet, not eyes.
14w06a 14w06a Type Snapshot Release date Feb. 6, 2014 Snapshot for 1.8 Download Client (.json) Server ◄◄ 1.7.10 ◄ 14w05b 14w06b ► 1.8.1 ►► See the computer edition. For other editions, see Version minecraft X, Y, and Z title has been changed from `Feet` in the previous snapshot, to `XYZ`.
Day counter added, which increases by 1 every dawn.
Now displays difficulty: Peaceful- 0.00, Easy- 0.75, Normal- 1.50, Hard 2.25 (but numbers slowly increase the longer you are in an area).
Now displays player rotation in degrees and quadrants.
14w11a 14w11a Type Snapshot Release date Mar. 13, 2014 Snapshot for 1.8 Download Client (.json) Server ◄◄ 1.7.10 ◄ 14w10c 14w11b ► 1.8.1 ►► See the computer edition. For other editions, see Version minecraft On the right hand side, a display shows up if you are looking at a block, showing its ID and block states.
14w17a 14w17a Type Snapshot Release date Apr. 24, 2014 Snapshot for 1.8 Download Client (.json) Server ◄◄ 1.7.10 ◄ 14w11b 14w18a ► 1.8.1 ►► See the computer edition. For other editions, see Version minecraft All blocks now have their info displayed on the right hand side of the F3 debug screen.
Removed the "Facing negative/positive x/z" from the F3 menu.
14w20a 14w20a Type Snapshot Release date May 15, 2014 Snapshot for 1.8 Download Client (.json) Server ◄◄ 1.7.10 ◄ 14w19a 14w20b ► 1.8.1 ►► See the computer edition. For other editions, see Version minecraft Readded "Facing negative/positive x/z".
14w25b F3 + B now also shows which direction entities are looking in using a blue line.
Removed the line on the right-hand side which had displayed the name of the block model the player was looking at.
14w29a A `Reduced Debug Info` toggle now exists within multiplayer settings to enable/disable reduced information on the debug screen.
The reducedDebugInfo gamerule allows you to enable/disable reduced information on the debug screen. This overrides all `reduced debug info` settings in clients.
14w30a Now displays how many chunk sections are being rendered currently and how many chunk sections are out of view in percent, the OpenGL version, display size, vendor and GPU.
"Vanilla" added to the version number.
1.8.2 1.8.2-pre1 Added frame time graph that can be activated using Alt + F3
1.9 15w32a F3+N now toggles between creative and spectator mode, when the player is in either of them. The player needs to be allowed to use /gamemode for this to work.
15w43a Now shows more information.
F3+Q gives help and shows all F3 + key combinations.
F3+F now increases render distance by 1 (Minimum and Maximum are 2-32).
F3+⇧ Shift+F now decreases render distance by 1 (Min and Max are 2-32).
Shows if the pie chart and FPS chart are shown on screen.
Shows text in chat when you reload chunks, sounds, etc.
Does not open the F3 screen when you use a specific key combination like F3+N, F3+B, etc.
Removed F3+S, which previously reloaded sounds.
F3+T now reloads all resource pack content, including sounds.
Red, blue and green lines changed in size, now change relative to the GUI scale
1.10 16w20a F3+G toggles the visible chunk borders around the player
The 3 lines indicating direction now have a small black outline when looking at an area with bad contrast

Pre-1.8 legend

Name Description
C Number of chunk sections rendered over total number of chunks. Counts all render passes: if a chunk section is rendered twice (because it contains both water and normal blocks, for example) then it will be counted twice.
F Number of chunk sections loaded outside the viewing distance. Counts all render passes.
O Number of chunk sections removed through occlusion culling. Counts all render passes.
E (first row) Number of empty chunk sections. These sections are skipped for one of two reasons: Either the chunk has not yet been loaded and rendered into polygons, or the section has nothing to draw in the current render pass. Counts all render passes.
E (second row) Number of rendered entities over total entities
B Unused, always 0. May previously have been the number of entities removed due to hidden chunks
I Number of invisible entities
P Number of particles on screen
T Displays your max framerate
ALL Displays total number of loaded entities (including mobs and dropped items)
ServerChunkCache
ChunkCache
The most chunks that will be loaded
x Player`s location in blocks East of 0,0 (negative values are to the West) and after the // is your chunk number with the block within the chunk in ()
y Player`s altitude in blocks (63 (62.9) is overworld The Overworld, as seen in an extreme hills and a forest biome The Overworld is the dimension in which all players begin their Minecraft journey. Contents 1 Creation 1.1 Seeds 2 Environment 2.1 Biomes 2.2 minecraft sea level, 11 (10.9) is overworld The Overworld, as seen in an extreme hills and a forest biome The Overworld is the dimension in which all players begin their Minecraft journey. Contents 1 Creation 1.1 Seeds 2 Environment 2.1 Biomes 2.2 minecraft lava flood level, 32 (31.9) is nether Nether may refer to: The Nether, a hell-like dimension, filled with fire, lava, and dangerous mobs. Advancements#Nether, an advancement by entering the Nether dimension. This disambiguation page lists articles associated with the same title. If lava sea).
z Player`s location in blocks South of 0,0 (negative values are to the North) and after the // is your chunk number with the block within the chunk in ()
f The direction in which a player is facing (south=0, west=1, north=2, east=3) and if the player walks towards x or z respectively
lc Max section height for the chunk you are in (Uses cubic chunk sections, so heights will display in multiples of 16 minus 1.)
b Shows you what Biome A river bisecting a jungle biome. At the top right is a forest. A river running through a mesa biome with mesa plateaus, with a savanna biome in the bottom right. “ In case you minecraft you are in.
bl (for "block light") The amount of light Light (or lighting) in Minecraft affects visibility, mob spawning, and plant growth. Contents 1 Brightness 1.1 Spread 2 Sources of light 2.1 Blocks 2.2 Other 3 Light-filtering blocks 4 Effects of light 4.1 Mobs 4.2 minecraft from other blocks (e.g. torches Torch Transparency Yes Luminance 14 Blast resistance 0 Tool Any tool Renewable Yes Stackable Yes (64) Flammable No Drops Itself Data value dec: 50 hex: 32 bin: 110010 Name torch See the common light-emitting torch. minecraft ) at the block your head is in. If you stand on top of a torch, this field will show a light level of 13 instead of the expected 14, due to your head being one block away from it.
sl (for sky light) The amount of light from the sky at the block your head is in. Note that the number shown here is only accurate during the day. It shows the light level the block would get from the sun in full daylight, but does not account for the lower light levels at night or during a storm.
rl (for raw light) The total light level where your head is, equal to max(bl,sl). Note that because the "sl" field is factored in here, this field has the same caveats as that one.
ws Walking speed.
fs Flying speed.
g On ground, Boolean value, true if the player touches the ground.
fl The y-coordinate of the highest block where the player is able to stand, rounded up when standing on half-blocks, such as slabs. When above the void (where there is no block), it will say 0.
shader The file path of the currently-active shader (within the "assets" directory of minecraft.jar). Only displayed if a shader is active.

Gallery