Alt Code Lookup & Symbol Finder
Search over 150+ Windows Alt Codes, Mac shortcuts, and HTML entities. Click any card to copy the symbol instantly!
1. The Origin & Architecture of Alt Codes
In computing, an Alt Code is a technique used on Microsoft Windows and DOS operating systems to insert characters that are not directly available on a physical keyboard.
Originally conceived by IBM in the early 1980s for the IBM Personal Computer (PC-DOS), Alt codes mapped numeric key sequences directly to character entries in Code Page 437 (the original IBM ASCII character set). In modern Windows versions, Alt codes support both the legacy OEM code pages and modern Unicode character sets.
By holding down the Alt key and typing a 3-digit or 4-digit number on the numeric keypad, Windows translates the keystroke into special mathematical constants, currency symbols, and foreign characters:
Alt + 3generates the Black Heart Suit: ♥Alt + 0176generates the Degree Sign: °Alt + 0169generates the Copyright Notice: ©Alt + 0128generates the Euro Currency: €
2. How to Type Alt Codes on Windows (With & Without a Numpad)
Method A: Standard Keyboards with a Dedicated Numeric Keypad
- Verify that NumLock is toggled ON (check if the LED indicator light on your keyboard is glowing).
- Press and hold the Left Alt key.
- Type the code numbers consecutively on the Numeric Keypad located on the far right of your keyboard. (Note: Using the top row number keys above the letters will NOT work!).
- Release the Alt key. The symbol will appear immediately at your text cursor.
Method B: Laptops Without a Numpad (Compact & Tenkeyless Keyboards)
Most modern ultrabooks and gaming laptops do not feature a physical number pad. Here are the 3 best ways to type symbols on compact devices:
- Option 1 (Fastest): Use TechBloomX 1-Click Copy: Search for your desired symbol in the search bar above and click the card to copy it to your clipboard in under one second!
- Option 2: Windows Emoji & Symbol Picker: Press Win + . (Windows Key + Period) to bring up the native Windows symbol palette.
- Option 3: Windows On-Screen Keyboard: Press Win + R, type
osk, and press Enter. In Options, enable “Turn on numeric key pad”, then hold Alt on your physical keyboard while clicking numbers on the on-screen keypad.
3. Apple Mac Equivalent Shortcuts (Option Key)
macOS does not utilize the Windows numeric Alt-code system. Instead, Apple utilizes the Option (or ⌥) key in combination with letter keys. Below are the most essential Mac symbol combinations:
| Symbol | Name | macOS Shortcut | Windows Alt Code |
|---|---|---|---|
| © | Copyright | Option + G |
Alt + 0169 |
| ® | Registered | Option + R |
Alt + 0174 |
| ™ | Trademark | Option + 2 |
Alt + 0153 |
| ° | Degree | Option + Shift + 8 |
Alt + 0176 |
| £ | British Pound | Option + 3 |
Alt + 0163 |
| € | Euro | Option + Shift + 2 |
Alt + 0128 |
| • | Bullet Point | Option + 8 |
Alt + 7 |
| ∞ | Infinity | Option + 5 |
Alt + 236 |
4. Master Symbol Reference Tables
📐 Mathematical & Scientific Symbols
| Symbol | Meaning | Alt Code | HTML Entity | Unicode |
|---|---|---|---|---|
| ± | Plus or Minus | Alt + 0177 |
± |
U+00B1 |
| ÷ | Division Sign | Alt + 0247 |
÷ |
U+00F7 |
| √ | Square Root | Alt + 251 |
√ |
U+221A |
| ≈ | Approximately Equal | Alt + 247 |
≈ |
U+2248 |
| π | Pi (Archimedes Constant) | Alt + 227 |
π |
U+03C0 |
| ² | Squared (Exponent 2) | Alt + 0178 |
² |
U+00B2 |
5. Frequently Asked Questions (FAQ)
The Windows kernel is programmed specifically to listen for scan codes originating from the 10-key numeric keypad hardware controller. The top number row sends different scan codes associated with standard typing characters.
3-digit codes (e.g. Alt + 248) reference the legacy MS-DOS OEM Code Page 437. 4-digit codes with a leading zero (e.g. Alt + 0176) reference the Windows ANSI Code Page 1252, which provides standardized international typography.
Yes! All symbols on TechBloomX are standard UTF-8 characters. You can paste them into Excel formulas, HTML documents, Word files, or social media bios without formatting loss.