What is the ASCII code for letter A?

The ASCII code for uppercase letter A is 65 (decimal), 41 (hexadecimal), or 1000001 (binary). Lowercase 'a' is ASCII code 97.

How do you represent letter A in programming?

In programming, letter A can be represented as 'A' (character literal), ASCII code 65, \x41 (hex), or \u0041 (Unicode).

What's the difference between uppercase and lowercase A in ASCII?

Uppercase 'A' has ASCII code 65, while lowercase 'a' has ASCII code 97. The difference is exactly 32, which is consistent for all letters.

ASCII A Character

The letter A (uppercase) has ASCII code 65 and is the first letter of the English alphabet. It's fundamental in programming for character operations, string processing, and alphabetical sorting.

Letter A

ASCII Code: 65 | Hex: 41 | Binary: 1000001

Character Information

Property	Value
ASCII Code (Decimal)	65
ASCII Code (Hexadecimal)	41
ASCII Code (Binary)	1000001
Unicode	U+0041
HTML Entity	A or A
Character Type	Uppercase Letter, Alphabetic
Lowercase Equivalent	a (ASCII 97)

Uppercase Alphabet Range

Letter	ASCII Code	Hex	Letter	ASCII Code	Hex
A	65	41	N	78	4E
B	66	42	O	79	4F
C	67	43	P	80	50
Z	90	5A	Click any letter to copy

Programming Examples

JavaScript

                        // Character literal

                        let letterA = 'A';

                        let fromCode = String.fromCharCode(65);  // From ASCII code

                        let fromHex = '\x41';                   // Hexadecimal escape

                        let fromUnicode = '\u0041';             // Unicode escape

                        // Character operations

                        let code = 'A'.charCodeAt(0);           // Returns 65

                        let isUppercase = 'A' >= 'A' && 'A' <= 'Z';  // true

                        let toLowerCase = 'A'.toLowerCase();    // Returns 'a'

Python

                        # Character literal

                        letter_a = 'A'

                        from_code = chr(65)                     # From ASCII code

                        from_hex = '\x41'                       # Hexadecimal escape

                        # Character operations

                        code = ord('A')                         # Returns 65

                        is_uppercase = 'A'.isupper()           # Returns True

                        to_lowercase = 'A'.lower()             # Returns 'a'

C/C++

                        // Character literal

                        char letter_a = 'A';

                        char from_code = 65;                    // From ASCII code

                        char from_hex = '\x41';                 // Hexadecimal escape

                        // Character operations

                        int code = (int)'A';                    // Returns 65

                        bool is_upper = isupper('A');          // Returns true

                        char to_lower = tolower('A');          // Returns 'a'

Common Uses

Alphabetical Sorting: First letter in alphabetical order
Grade Systems: Represents highest grade (A+, A, A-)
Variable Names: Common choice for loop counters and variables
Hexadecimal: Represents value 10 in base-16 numbering
Character Ranges: Start of uppercase letter range (A-Z)
String Processing: Pattern matching and text analysis
Data Validation: Checking for alphabetic characters