# macOS Key Code Reference

This document lists common macOS key codes for keyboard remapping configuration.

## Alphanumeric Keys

| Key | Code | Description |
|-----|------|-------------|
| A | 0 | Letter A |
| S | 1 | Letter S |
| D | 2 | Letter D |
| F | 3 | Letter F |
| H | 4 | Letter H |
| G | 5 | Letter G |
| Z | 6 | Letter Z |
| X | 7 | Letter X |
| C | 8 | Letter C |
| V | 9 | Letter V |
| B | 11 | Letter B |
| Q | 12 | Letter Q |
| W | 13 | Letter W |
| E | 14 | Letter E |
| R | 15 | Letter R |
| Y | 16 | Letter Y |
| T | 17 | Letter T |
| 1 | 18 | Number 1 |
| 2 | 19 | Number 2 |
| 3 | 20 | Number 3 |
| 4 | 21 | Number 4 |
| 6 | 22 | Number 6 |
| 5 | 23 | Number 5 |
| = | 24 | Equal sign |
| 9 | 25 | Number 9 |
| 7 | 26 | Number 7 |
| - | 27 | Minus/Hyphen |
| 8 | 28 | Number 8 |
| 0 | 29 | Number 0 |
| ] | 30 | Right bracket |
| O | 31 | Letter O |
| U | 32 | Letter U |
| [ | 33 | Left bracket |
| I | 34 | Letter I |
| P | 35 | Letter P |
| L | 37 | Letter L |
| J | 38 | Letter J |
| ' | 39 | Quote/Apostrophe |
| K | 40 | Letter K |
| ; | 41 | Semicolon |
| \ | 42 | Backslash |
| , | 43 | Comma |
| / | 44 | Slash |
| N | 45 | Letter N |
| M | 46 | Letter M |
| . | 47 | Period/Dot |
| ` | 50 | Grave accent/Backtick |

## Function Keys

| Key | Code | Description |
|-----|------|-------------|
| Return | 36 | Enter/Return key |
| Tab | 48 | Tab key |
| Space | 49 | Space bar |
| Delete | 51 | Backspace/Delete |
| Escape | 53 | Escape key |
| Command | 55 | Command/Cmd key |
| Shift | 56 | Shift key |
| CapsLock | 57 | Caps Lock |
| Option | 58 | Option/Alt key |
| Control | 59 | Control key |
| RightShift | 60 | Right Shift key |
| RightOption | 61 | Right Option/Alt key |
| RightControl | 62 | Right Control key |
| Function | 63 | Function/Fn key |

## Special Keys

| Key | Code | Description |
|-----|------|-------------|
| F5 | 96 | F5 key |
| F6 | 97 | F6 key |
| F7 | 98 | F7 key |
| F3 | 99 | F3 key |
| F8 | 100 | F8 key |
| F9 | 101 | F9 key |
| F11 | 103 | F11 key |
| F13 | 105 | F13 key |
| F14 | 107 | F14 key |
| F10 | 109 | F10 key |
| F12 | 111 | F12 key |
| F15 | 113 | F15 key |
| Help | 114 | Help key |
| Home | 115 | Home key |
| PageUp | 116 | Page Up |
| ForwardDelete | 117 | Forward Delete (Del) |
| F4 | 118 | F4 key |
| End | 119 | End key |
| F2 | 120 | F2 key |
| PageDown | 121 | Page Down |
| F1 | 122 | F1 key |
| LeftArrow | 123 | Left Arrow |
| RightArrow | 124 | Right Arrow |
| DownArrow | 125 | Down Arrow |
| UpArrow | 126 | Up Arrow |

## Numpad Keys

| Key | Code | Description |
|-----|------|-------------|
| Keypad . | 65 | Decimal point |
| Keypad * | 67 | Multiply |
| Keypad + | 69 | Add |
| Keypad Clear | 71 | Clear |
| Keypad / | 75 | Divide |
| Keypad Enter | 76 | Enter |
| Keypad - | 78 | Subtract |
| Keypad = | 81 | Equal |
| Keypad 0 | 82 | Number 0 |
| Keypad 1 | 83 | Number 1 |
| Keypad 2 | 84 | Number 2 |
| Keypad 3 | 85 | Number 3 |
| Keypad 4 | 86 | Number 4 |
| Keypad 5 | 87 | Number 5 |
| Keypad 6 | 88 | Number 6 |
| Keypad 7 | 89 | Number 7 |
| Keypad 8 | 91 | Number 8 |
| Keypad 9 | 92 | Number 9 |

## Media and System Keys

| Key | Code | Description |
|-----|------|-------------|
| Mute | 74 | Volume Mute |
| VolumeUp | 72 | Volume Up |
| VolumeDown | 73 | Volume Down |
| Brightness Down | 145 | Display brightness down |
| Brightness Up | 144 | Display brightness up |
| Play/Pause | 16 | Media play/pause (F8) |
| Previous Track | 17 | Previous track (F7) |
| Next Track | 19 | Next track (F9) |

## Notes

- Key codes are decimal values used by macOS CGEvent API
- Some media keys may require special handling or may not be remappable
- Function keys (F1-F15) can have default system behaviors that may need to be overridden
- Modifier keys (Command, Shift, Control, Option) can be combined with other keys
- The codes listed are for US keyboard layout; other layouts may vary