bind
bind is a console command available in all 
GoldSrc, 
Source, and 
Source 2 games.
It is used to bind a key to one or several other commands. Typically, when keys are bound, the corresponding bind command is stored in config.cfg which is ran when the engine starts, leading to binds staying active between sessions unless config.cfg is set to read-only.
Tip:Often times it is difficult to find out which key you have to press to bind the symbol character you desire, as the game's layout is not the same as your computers. You may press your $ key and nothing happens ingame, because it thinks you pressed \.To save yourself a headache, you could use the game's keybind menu to find an empty slot and rebind it to whatever key you want to press, to see what the game thinks that key is supposed to be.
Syntax
Basic Syntax
The basic syntax for the command is as follows:
bind <key> [command]
For example, after running bind 1 slot1, pressing 1 would execute the command slot1. Additionally, binding a key to a semicolon-separated list of commands in quotation marks would cause all commands to be executed, because everything within quotation marks is interpreted as a single argument. After running bind mouse1 "slot1; unbind mouse1", then pressing mouse1, slot1 would be run, followed by unbind mouse1.
+/- Commands
If the first character in the command/string that the key is bound to is +, then after releasing the key, the same string of commands is executed, except the first character is replaced with -. For example, running bind w +forward will cause +forward to be run when w is pressed, then -forward to be run when w is unpressed. Consequently, there are some cases where the result of pressing a key are different from what is intuitive. Running bind w "+forward; +attack" will cause +forward;+attack to be run when w is pressed, but causes -forward;+attack to be run when w is unpressed, causing +attack to be run, rather than -attack. The alias command can be used in conjunction with bind to yield different results. To make the W key instead run +forward; +attack when pressed, and run -forward; -attack when unpressed, the following commands can be used:
alias +w_pressed "+forward; +attack"
alias -w_pressed "-forward; -attack"
bind w +w_pressedSpecial Keys
Note:In 
Counter-Strike 2 the keypad numbers are KP_1, KP_2, KP_3... Source 2 in general?Note:Some gamepads button (such as A_BUTTON, but not joyX) may be disabled or become non-functional in favor of Steam Input, if the Gamepad UI were enabled (tested on 
Half-Life 2).Note:On any controllers other than Xbox, all the Gamepad Buttons binds may work differently, or incorrectly bound (according to Game Controllers Control Panel in Windows). This does not apply to Steam Input or programs such as DS4Windows, which correctly emulates Xbox controller buttons on any other controllers.Note:While computers themselves can still use F13 to F24, source engine does not recognize these keys.| Bind name | Key |
|---|---|
| f1-12 | Function key F1 to F12 |
| escape | Esc (Escape) |
| tab | Tab ⇆ Tabulator |
| capslock | ⇪ Caps Lock |
| shift | ⇧ Shift (Left side) |
| rshift | ⇧ Shift (Right side) |
| ctrl | Ctrl (Left side) |
| rctrl | Ctrl (Right side) |
| alt | Alt (Left side) |
| ralt | Alt (Right side) |
| space | Spacebar |
| backspace | ← Backspace |
| enter | ↵ Enter |
| semicolon | Semicolon (;) |
| lwin | ⊞ Win (Left side) |
| rwin | ⊞ Win (Right side) |
| apps | ≣ Menu |
| numlock | Num Lock |
| scrolllock | Scroll Lock |
| Bind name | Key |
|---|---|
| uparrow | ↑ Up Arrow |
| downarrow | ↓ Down Arrow |
| leftarrow | ← Left Arrow |
| rightarrow | → Right Arrow |
| ins | Insert |
| del | Delete |
| pgdn | Page Down |
| pgup | Page Up |
| home | Home |
| end | End |
| pause | Pause (or Pause/Break) |
| Bind name | Key |
|---|---|
| kp_end | Keypad 1 |
| kp_downarrow | Keypad 2 |
| kp_pgdn | Keypad 3 |
| kp_leftarrow | Keypad 4 |
| kp_5 | Keypad 5 |
| kp_rightarrow | Keypad 6 |
| kp_home | Keypad 7 |
| kp_uparrow | Keypad 8 |
| kp_pgup | Keypad 9 |
| kp_enter | Keypad Enter |
| kp_ins | Keypad 0 |
| kp_del | Keypad . |
| kp_slash | Keypad / |
| kp_multiply | Keypad * |
| kp_minus | Keypad - |
| kp_plus | Keypad + |
| Bind name | Key |
|---|---|
| mwheeldown | Mouse - Scroll Down |
| mwheelup | Mouse - Scroll Up |
| mouse1 |  (Mouse - Left click)
|
| mouse2 |  (Mouse - Right click)
|
| mouse3 |  (Mouse - Middle/Wheel click)
|
| mouse4 |  (Mouse - Page Back)
|
| mouse5 |  (Mouse - Page Forward)
|
| Bind name | Key |
|---|---|
Z AXIS POS (only in  )
|
 LT (left trigger) button
|
| Z AXIS NEG (only in )
|
RT (right trigger) button
|
| joy1 / A_BUTTON |  button  (Cross) button
|
| joy2 / B_BUTTON |  button  (Circle) button
|
| joy3 / X_BUTTON |  button  (Square) button
|
| joy4 / Y_BUTTON |  button  (Triangle) button
|
| joy5 / L_SHOULDER |  (left bumper) button L1 button
|
| joy6 / R_SHOULDER |  (right bumper) button R1 button
|
| joy7 / BACK |  (Back) button View button L2 (left trigger) button
|
| joy8 / START |  (Start) button ≣ Menu button R2 (right trigger) button
|
| joy9 / STICK1 |  (Left stick) button Select/Share/Create button
|
| joy10 / STICK2 |  (Right stick) button Start/Options button
|
| joy11 | L3 button
|
| joy12 | R3 button
|
| joy13 | PlayStation button |
| joy14 | (PS4/PS5 only) - Touchpad
|
| joy15-32 | Other joystick & gamepad buttons. |
| aux1-32 | Legacy. Maps directly to joy1-32. |
| pov_up | D-Pad Up |
| pov_right | D-Pad Right |
| pov_down | D-Pad Down |
| pov_left | D-Pad Left |
Related console commands
Binds_per_command
Set the maximum number of binds per command when on console. Does not apply to desktop.
Syntax:
binds_per_command <number>
BindToggle
A convenient command for toggling a CVar on or off by pressing a key. Functionally identical to bind <key> "incrementvar <CVar> 0 1 1".
Syntax:
BindToggle <key> <cvar>
If you wanted your p key to turn sv_cheats on or off, you would type BindToggle p sv_cheats.
Toggle
Not to be confused with BindToggle. Toggle allows you to toggle values of a convar, instead of the convar's 0/1 state.
For example, toggling between sv_noclipspeed 1 and 5
Syntax:
bind <key> "toggle <cvar> <value1> <value2>
Bind_mac
Functions identically to bind except it only affects 
macOS users.
Unbind
The opposite of bind. Sets a key to do nothing.
Syntax:
unbind <key>
To make your left click do nothing, you would type unbind MOUSE1.
Unbind_mac
Functions identically to unbind except it only affects macOS users.
unbindall
The infamous command that unbinds all the keys.
Tip:If you do this command (or you're a poor sap that got tricked), you can reset to default bindings in the Options menu. Keyboard, Use Defaults.Key_listboundkeys
Lists all keys that are bound to something, and what they are bound to.
Example input and output from Half-Life 2:
] key_listboundkeys "6" = "slot6" "1" = "slot1" "a" = "+moveleft" "2" = "slot2" "c" = "impulse 50" "3" = "slot3" "d" = "+moveright" "4" = "slot4" "e" = "+use" "5" = "slot5" "f" = "impulse 100" "g" = "phys_swap" "q" = "lastinv" "w" = "+forward" "r" = "+reload" "z" = "+zoom" "s" = "+back" "`" = "toggleconsole" "SPACE" = "+jump" "NUMLOCK" = "pause" "ESCAPE" = "cancelselect" "SHIFT" = "+speed" "CTRL" = "+duck" "ALT" = "+walk" "F5" = "jpeg" "F6" = "save quick" "F9" = "load quick" "MOUSE1" = "+attack" "MWHEELDOWN" = "invnext" "MOUSE2" = "+attack2" "MWHEELUP" = "invprev"
Key_findbinding
Searches through the list of bound keys and returns the ones that have a given substring in the command field.
Syntax:
key_findbinding <string>
Example input and output from Half-Life 2:
] key_findbinding slot "1" = "slot1" "2" = "slot2" "3" = "slot3" "4" = "slot4" "5" = "slot5" "6" = "slot6"
Key_updatelayout
Updates game keyboard layout to current windows keyboard setting. Only works on windows.
This is only useful if your virtual keyboard layout changes in Windows (i.e changing from QWERTY to AZERTY) while the game is running.