ASCII Values Alphabets ( A-Z, a-z & Special Character Table )

ASCII (American Standard Code for Information Interchange) is a standard character encoding used in telecommunication. The ASCII pronounced ‘ask-ee’, is strictly a seven-bit code based on the English alphabet. ASCII codes are used to represent alphanumeric data.

The code was first published as a standard in 1967. it was subsequently updated and published as ANSI X3.4-1968, then as ANSI X3.4-1977, and finally as ANSI X3.4-1986. Since it is a seven-bit code, it can at the most represent 128 characters. it currently defines 95 printable characters including 26 upper case letters (A to Z), 26 lower case letters, 10 numerals (0 to 9), and 33 special characters including mathematical symbols, punctuation marks, and space characters. They represent text in, telecommunications equipment, and devices. These include numbers, upper and lowercase English letters, functions, punctuation symbols, and some other symbols.

In total, there are 256 ASCII characters, and can be broadly divided into three categories:

1. ASCII control characters (0-31 and 127)
2. ASCII printable characters (32-126) (most commonly referred to)
3. Extended ASCII characters (128-255)

What is ASCII Value?

 ASCII stands for American Standard Code for Information Interchange, A character encoding standard that assigns unique numerical values to letters, digits, punctuation marks, and other symbols.

Why do we need ASCII Value representation?

In the physical world, you would use a pen and paper to write the message, and your friend would read the text directly. However, when it comes to digital communication, computers don’t understand letters and symbols the way humans do. Instead, they process information in the form of binary code, which consists of 0s and 1s. This is where ASCII values come into play.

ASCII values serve as a bridge between human-readable text and computer-readable binary code. Each character, whether it’s a letter, number, or symbol, is assigned a unique ASCII value ranging from 0 to 127. For example, the ASCII value of the uppercase letter ‘A’ is 65, while the lowercase letter ‘a’ has an ASCII value of 97. Similarly, the digit ‘0’ has an ASCII value of 48.

How Computers Use ASCII to Understand Human Text?

Suppose you want to send a text message to your friend that reads, “Hello!” When you type this message on your phone or computer, each character is converted into its corresponding ASCII value. In this case, the ASCII values for “Hello!” are 72, 101, 108, 108, 111, and 33. These numerical values are then translated into binary code, which is transmitted to your friend’s device. Upon receiving the message, their device converts the binary code back into ASCII values and finally displays the original text, “Hello!”

ASCII Table

The Extended ASCII Codes (character code 128-255)

The table below adheres to the Windows-1252 (CP-1252) standard, an extension of ISO 8859-1, also known as ISO Latin-1. This standard differs from IANA’s ISO-8859-1 by substituting control characters with displayable characters in the range of 128 to 159. Any characters that deviate from ISO-8859-1 are highlighted in light blue.

DEC	BIN	Symbol	HTML Number	HTML Name	Description
128	10000000	€	€	€	Euro sign
129	10000001				Unused
130	10000010	‚	‚	‚	Single low-9 quotation mark
131	10000011	ƒ	ƒ	ƒ	Latin small letter f with hook
132	10000100	„	„	„	Double low-9 quotation mark
133	10000101	…	…	…	Horizontal ellipsis
134	10000110	†	†	†	Dagger
135	10000111	‡	‡	‡	Double dagger
136	10001000	ˆ	ˆ	ˆ	Modifier letter circumflex accent
137	10001001	‰	‰	‰	Per mille sign
138	10001010	Š	Š	Š	Latin capital letter S with caron
139	10001011	‹	‹	‹	Single left-pointing angle quotation
140	10001100	Œ	Œ	Œ	Latin capital ligature OE
141	10001101				Unused
142	10001110	Ž	Ž	Ž	Latin capital letter Z with caron
143	10001111				Unused
144	10010000				Unused
145	10010001	‘	‘	‘	Left single quotation mark
146	10010010	’	’	’	Right single quotation mark
147	10010011	“	“	“	Left double quotation mark
148	10010100	”	”	”	Right double quotation mark
149	10010101	•	•	•	Bullet
150	10010110	–	–	–	En dash
151	10010111	—	—	—	Em dash
152	10011000	˜	˜	˜	Small tilde
153	10011001	™	™	™	Trade mark sign
154	10011010	š	š	š	Latin small letter S with caron
155	10011011	›	›	›	Single right-pointing angle quotation mark
156	10011100	œ	œ	œ	Latin small ligature oe
157	10011101				Unused
158	10011110	ž	ž	ž	Latin small letter z with caron
159	10011111	Ÿ	Ÿ	Ÿ	Latin capital letter Y with diaeresis
160	10100000	NBSP	 	 	Non-breaking space
161	10100001	¡	¡	¡	Inverted exclamation mark
162	10100010	¢	¢	¢	Cent sign
163	10100011	£	£	£	Pound sign
164	10100100	¤	¤	¤	Currency sign
165	10100101	¥	¥	¥	Yen sign
166	10100110	¦	¦	¦	Pipe, broken vertical bar
167	10100111	§	§	§	Section sign
168	10101000	¨	¨	¨	Spacing diaeresis – umlaut
169	10101001	©	©	©	Copyright sign
170	10101010	ª	ª	ª	Feminine ordinal indicator
171	10101011	«	«	«	Left double-angle quotes
172	10101100	¬	¬	¬	Negation
173	10101101	­SHY	­	­	Soft hyphen
174	10101110	®	®	®	Registered trademark sign
175	10101111	¯	¯	¯	Spacing macron – overline
176	10110000	°	°	°	Degree sign
177	10110001	±	±	±	Plus-or-minus sign
178	10110010	²	²	²	Superscript two-squared
179	10110011	³	³	³	Superscript three – cubed
180	10110100	´	´	´	Acute accent – spacing acute
181	10110101	µ	µ	µ	Micro sign
182	10110110	¶	¶	¶	Pilcrow sign – paragraph sign
183	10110111	·	·	·	Middle dot – Georgian comma
184	10111000	¸	¸	¸	Spacing cedilla
185	10111001	¹	¹	¹	Superscript one
186	10111010	º	º	º	Masculine ordinal indicator
187	10111011	»	»	»	Right double-angle quotes
188	10111100	¼	¼	¼	Fraction one quarter
189	10111101	½	½	½	Fraction one half
190	10111110	¾	¾	¾	Fraction three quarters
191	10111111	¿	¿	¿	Inverted question mark
192	11000000	À	À	À	Latin capital letter A with grave
193	11000001	Á	Á	Á	Latin capital letter A with acute
194	11000010	Â	Â	Â	Latin capital letter A with circumflex
195	11000011	Ã	Ã	Ã	Latin capital letter A with tilde
196	11000100	Ä	Ä	Ä	Latin capital letter A with diaeresis
197	11000101	Å	Å	Å	Latin capital letter A with ring above
198	11000110	Æ	Æ	Æ	Latin capital letter AE
199	11000111	Ç	Ç	Ç	Latin capital letter C with cedilla
200	11001000	È	È	È	Latin capital letter E with grave
201	11001001	É	É	É	Latin capital letter E with acute
202	11001010	Ê	Ê	Ê	Latin capital letter E with circumflex
203	11001011	Ë	Ë	Ë	Latin capital letter E with diaeresis
204	11001100	Ì	Ì	Ì	Latin capital letter I with grave
205	11001101	Í	Í	Í	Latin capital letter I with acute
206	11001110	Î	Î	Î	Latin capital letter I with circumflex
207	11001111	Ï	Ï	Ï	Latin capital letter I with diaeresis
208	11010000	Ð	Ð	Ð	Latin capital letter ETH
209	11010001	Ñ	Ñ	Ñ	Latin capital letter N with tilde
210	11010010	Ò	Ò	Ò	Latin capital letter O with grave
211	11010011	Ó	Ó	Ó	Latin capital letter O with acute
212	11010100	Ô	Ô	Ô	Latin capital letter O with circumflex
213	11010101	Õ	Õ	Õ	Latin capital letter O with tilde
214	11010110	Ö	Ö	Ö	Latin capital letter O with diaeresis
215	11010111	×	×	×	Multiplication sign
216	11011000	Ø	Ø	Ø	Latin capital letter O with a slash
217	11011001	Ù	Ù	Ù	Latin capital letter U with grave
218	11011010	Ú	Ú	Ú	Latin capital letter U with acute
219	11011011	Û	Û	Û	Latin capital letter U with circumflex
220	11011100	Ü	Ü	Ü	Latin capital letter U with diaeresis
221	11011101	Ý	Ý	Ý	Latin capital letter Y with acute
222	11011110	Þ	Þ	Þ	Latin capital letter THORN
223	11011111	ß	ß	ß	Latin small letter sharp s – ess-zed
224	11100000	à	à	à	Latin small letter a with grave
225	11100001	á	á	á	Latin small letter a with acute
226	11100010	â	â	â	Latin small letter a with circumflex
227	11100011	ã	ã	ã	Latin small letter a with tilde
228	11100100	ä	ä	ä	Latin small letter a with diaeresis
229	11100101	å	å	å	Latin small letter a with ring above
230	11100110	æ	æ	æ	Latin small letter ae
231	11100111	ç	ç	ç	Latin small letter c with cedilla
232	11101000	è	è	è	Latin small letter e with grave
233	11101001	é	é	é	Latin small letter e with acute
234	11101010	ê	ê	ê	Latin small letter e with circumflex
235	11101011	ë	ë	ë	Latin small letter e with diaeresis
236	11101100	ì	ì	ì	Latin small letter i with grave
237	11101101	í	í	í	Latin small letter i with acute
238	11101110	î	î	î	Latin small letter i with circumflex
239	11101111	ï	ï	ï	Latin small letter i with diaeresis
240	11110000	ð	ð	&etc;	Latin small letter eth
241	11110001	ñ	ñ	ñ	Latin small letter n with tilde
242	11110010	ò	ò	ò	Latin small letter o with grave
243	11110011	ó	ó	ó	Latin small letter o with acute
244	11110100	ô	ô	ô	Latin small letter o with circumflex
245	11110101	õ	õ	õ	Latin small letter o with tilde
246	11110110	ö	ö	ö	Latin small letter o with diaeresis
247	11110111	÷	÷	÷	Division sign
248	11111000	ø	ø	ø	Latin small letter o with slash
249	11111001	ù	ù	ù	Latin small letter u with grave
250	11111010	ú	ú	ú	Latin small letter u with acute
251	11111011	û	û	û	Latin small letter u with circumflex
252	11111100	ü	ü	ü	Latin small letter u with diaeresis
253	11111101	ý	ý	ý	Latin small letter y with acute
254	11111110	þ	þ	þ	Latin small letter thorn
255	11111111	ÿ	ÿ	ÿ	Latin small letter y with diaeresis

So what’s before 33 and beyond 126?

1. ASCII values before 32 (0-31) are control characters. A character code is often used in in-band signaling as a reference point in a set of characters to avoid adding additional symbols to the text.
2. At 32, we have space, which is included as printed characters, however, it’s not wrong to say space could also serve as a control character.
3. At 127, we have DEL (delete), which is a control character.
4. After 127, (128-255), we have Extended ASCII characters representing mathematical and other symbols that are not represented as keys and are not used in general.

Below are the ASCII values of Control Characters (0-31, 127):

Character	Character Name	ASCII Code
NULL	Null character	00
SOH	Start of header	01
STX	Start of text	02
ETX	End of text	03
EOT	End of transmission	04
ENQ	enquiry	05
ACK	acknowledge	06
BEL	bell	07
BS	backspace	08
HT	Horizontal tab	09
LF	Line feed	10

Character	Character Name	ASCII Code
VT	Vertical tab	11
FF	Form feed	12
CR	Carriage return	13
SO	Shift out	14
SI	Shift in	15
DLE	Data link escape	16
DC1	Device control 1	17
DC2	Device control 2	18
DC3	Device control 3	19
DC4	Device control 4	20
NAK	Negative acknowledge	21

Character	Character Name	ASCII Code
SYN	Synchronous idle	22
ETB	End of trans. Block	23
CAN	Cancel	24
EM	End of medium	25
SUB	substitute	26
ESC	escape	27
FS	File separator	28
GS	Group separator	29
RS	Record separator	30
US	Unit separator	31
DEL	delete	127

Difference Between ASCII and Unicode

ASCII	Unicode
ASCII bassically used to represent text in form of symbols, numbers, and character	UNICODE is used to exchange, process, and store text data in any language
ASCII is a character encoding standard that uses 7-bit binary numbers to represent characters	UNICODE is a character encoding standard that uses 16-bit binary numbers to represent characters
ASCII can only represent 128 characters.	Unicode can represent over 65,000 characters from different languages and scripts.

Conclusion

To summarize, the range of ASCII values for capital letters spans from 65 to 90, while for small letters, it extends from 97 to 122. Allocated in alphabetical sequence, the values for “A” and “Z” are 65 and 90, respectively, in uppercase. Similarly, the values for “a” and “z” in lowercase are 97 and 122, respectively.

Frequently Asked Questions on ASCII Values – FAQs

What is the ASCII value of A to Z?

The Ascii Value of Capital A to Z are Assigned in alphabetical order from (65-90) , with “A” assigned the value of 65 and “Z” assigned the value of 90 for uppercase letters.

What is the ASCII value of lowercase a to z?

The Ascii Value of small a to z are also assigned in alphabetical order from (97-122) , with  “a” is assigned the value of 97 and “z” is assigned the value of 122 for lowercase letters.

How can I convert ASCII values to characters?

In the context of programming, for conversion you can use Char() function in python to convert ascii value to their corresponding characters. for ex:- Char(32) gives nothing because it’s a space. but for other values it definitely gives a Character.

Can ASCII values be used to represent non-English characters?

No, ASCII values only represent a limited set of characters in the English language and cannot be used to represent non-English characters.