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Binary To Ascii Converter

Enter the binary value to convert to ascii text or ASCII Text to Binary.

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Binary:

Binary code represents text characters as sequences of 8-bit bytes (e.g., 01001000 = "H").

ASCII Text:

ASCII (American Standard Code for Information Interchange) is a character encoding standard with 128 characters including letters, digits, and symbols.

How to Convert Binary to ASCII Text — Formula:

Each 8-bit binary group → decimal value → ASCII character. Character = String.fromCharCode(parseInt(binary, 2)).

Example: 01001000 01101001 → 72 105 → "Hi".

Technical Details:

ASCII uses 7 bits (0-127) for standard characters. Extended ASCII uses 8 bits (0-255). Printable characters: 32-126. Control characters: 0-31. Common: 65=A, 97=a, 48=0, 32=space, 10=newline.

Binary To Ascii Converter:

Convert binary code to readable ASCII text. Enter space-separated 8-bit binary values to decode the message.

How to Convert Binary to ASCII Text

  1. Get 8-bit binary byte
  2. Convert binary to decimal
  3. Get character from ASCII table using decimal code
  4. Continue with next byte

Example

Convert "01001000 01101001" to text:

01001000₂ = 72₁₀ => "H"

01101001₂ = 105₁₀ => "i"

Result: "Hi"

ASCII Text to Hex, Binary Conversion Table

ASCII CharacterHexadecimalBinary
NUL0000000000
SOH0100000001
STX0200000010
ETX0300000011
EOT0400000100
ENQ0500000101
ACK0600000110
BEL0700000111
BS0800001000
HT0900001001
LF0A00001010
VT0B00001011
FF0C00001100
CR0D00001101
SO0E00001110
SI0F00001111
DLE1000010000
DC11100010001
DC21200010010
DC31300010011
DC41400010100
NAK1500010101
SYN1600010110
ETB1700010111
CAN1800011000
EM1900011001
SUB1A00011010
ESC1B00011011
FS1C00011100
GS1D00011101
RS1E00011110
US1F00011111
Space2000100000
!2100100001
"2200100010
#2300100011
$2400100100
%2500100101
&2600100110
'2700100111
(2800101000
)2900101001
*2A00101010
+2B00101011
,2C00101100
-2D00101101
.2E00101110
/2F00101111
03000110000
13100110001
23200110010
33300110011
43400110100
53500110101
63600110110
73700110111
83800111000
93900111001
:3A00111010
;3B00111011
<3C00111100
=3D00111101
>3E00111110
?3F00111111
@4001000000
A4101000001
B4201000010
C4301000011
D4401000100
E4501000101
F4601000110
G4701000111
H4801001000
I4901001001
J4A01001010
K4B01001011
L4C01001100
M4D01001101
N4E01001110
O4F01001111
P5001010000
Q5101010001
R5201010010
S5301010011
T5401010100
U5501010101
V5601010110
W5701010111
X5801011000
Y5901011001
Z5A01011010
[5B01011011
\5C01011100
]5D01011101
^5E01011110
_5F01011111
`6001100000
a6101100001
b6201100010
c6301100011
d6401100100
e6501100101
f6601100110
g6701100111
h6801101000
i6901101001
j6A01101010
k6B01101011
l6C01101100
m6D01101101
n6E01101110
o6F01101111
p7001110000
q7101110001
r7201110010
s7301110011
t7401110100
u7501110101
v7601110110
w7701110111
x7801111000
y7901111001
z7A01111010
{7B01111011
|7C01111100
}7D01111101
~7E01111110
DEL7F01111111

Frequently Asked Questions

How do I convert Binary to ASCII Text?

Each 8-bit binary group → decimal value → ASCII character. Character = String.fromCharCode(parseInt(binary, 2)).

What is the Binary number system?

Binary code represents text characters as sequences of 8-bit bytes (e.g., 01001000 = "H").

What is the ASCII Text number system?

ASCII (American Standard Code for Information Interchange) is a character encoding standard with 128 characters including letters, digits, and symbols.

Where is Binary to ASCII Text conversion used?

ASCII uses 7 bits (0-127) for standard characters. Extended ASCII uses 8 bits (0-255). Printable characters: 32-126. Control characters: 0-31. Common: 65=A, 97=a, 48=0, 32=space, 10=newline.

Can I convert large binary numbers?

Yes. This converter handles numbers of any practical size. For very large numbers, the conversion is performed using arbitrary-precision arithmetic to ensure accuracy.

How to Convert Binary to ASCII (Binary Numbers to Characters)

ASCII (American Standard Code for Information Interchange) maps 128 characters to 7-bit binary codes. Converting binary to ASCII means splitting a binary stream into 8-bit (or 7-bit) groups and looking up each value in the ASCII table. This is fundamental to understanding how text files, network protocols, and serial communication work at the hardware level.

  1. Split the binary string into groups of 8 bits (one byte per character).
  2. Convert each 8-bit group to its decimal value (0-127 for standard ASCII).
  3. Look up the decimal value in the ASCII table to find the character.
  4. Concatenate all characters to form the text string.
  5. Example: 01001000 01101001 → 72, 105 → "Hi".
💡 Tip: Key ASCII ranges to memorize: 48-57 = digits 0-9, 65-90 = uppercase A-Z, 97-122 = lowercase a-z, 32 = space, 10 = newline (LF), 13 = carriage return (CR).

Binary to ASCII: Essential Character Codes

The most commonly used ASCII characters and their 8-bit binary representations:

InputOutput
00001010LF (\n)
00001101CR (\r)
00100000Space
001100000
001100011
01000001A
01000010B
01011010Z
01100001a
01111010z
00101110.
01000000@

Solved Examples: Binary to ASCII

Question 1: Decode the binary message: 01001000 01100101 01101100 01101100 01101111

Solution:

01001000 = 72 = H

01100101 = 101 = e

01101100 = 108 = l

01101100 = 108 = l

01101111 = 111 = o

Answer: The binary sequence decodes to "Hello".

Question 2: A serial port receives: 01010011 01001111 01010011. What is the message?

Solution:

01010011 = 83 = S

01001111 = 79 = O

01010011 = 83 = S

Answer: The binary data decodes to "SOS" — a distress signal transmitted as ASCII.

Question 3: Convert 00110001 00110010 00110111 to ASCII (text representation of a number).

Solution:

00110001 = 49 = '1'

00110010 = 50 = '2'

00110111 = 55 = '7'

Note: these are the characters 1, 2, 7 — not the number 127.

Answer: The binary represents the ASCII string "127" — digits are stored as characters (48 + digit value).

Question 4: Decode: 01000011 00101011 00101011

Solution:

01000011 = 67 = C

00101011 = 43 = +

00101011 = 43 = +

Answer: The binary decodes to "C++" — the programming language name in ASCII.

Practice: Binary to ASCII

Try solving these on your own to test your understanding:

  1. Decode 01010100 01100101 01110011 01110100. (Answer: "Test")
  2. What character is 01000000? (Answer: @ — the "at" sign, ASCII 64)
  3. Decode 00110100 00110010. (Answer: "42" — the string, not the number)
  4. What is 01111110 in ASCII? (Answer: ~ tilde, ASCII 126)
  5. Decode 01001111 01001011. (Answer: "OK")
  6. What character is 00100001? (Answer: ! — exclamation mark, ASCII 33)

ASCII Control Characters (0-31)

The first 32 ASCII codes (00000000-00011111) are non-printable control characters: 0=NULL (string terminator in C), 7=BEL (makes terminal beep), 8=BS (backspace), 9=TAB (horizontal tab), 10=LF (line feed), 13=CR (carriage return), 27=ESC (escape sequences). These were designed for teletypes but still control modern terminals. When viewing a binary file, control characters appear as dots or special symbols in hex editors.

ASCII vs. Unicode: Where Binary Gets Complex

Standard ASCII uses 7 bits (128 characters). Extended ASCII uses 8 bits (256 characters) with various code pages. Unicode (UTF-8) uses 1-4 bytes per character, where ASCII characters (0-127) use a single byte unchanged but characters above 127 use multi-byte sequences starting with specific bit patterns: 110xxxxx for 2-byte, 1110xxxx for 3-byte, 11110xxx for 4-byte. The first bit of each byte tells the decoder whether it is ASCII or a multi-byte sequence.

Key Takeaways

  • Split binary into 8-bit groups, convert each to a decimal value, then look up ASCII.
  • Key ranges: 48-57 (digits), 65-90 (uppercase), 97-122 (lowercase), 32 (space).
  • Uppercase to lowercase: change bit 5 (add 32 to the decimal value).
  • Control characters (0-31) are non-printable but functionally important.
  • Standard ASCII is 7-bit (128 chars); UTF-8 extends it with multi-byte sequences.
  • Text in computers is always just binary — ASCII defines the agreed-upon mapping.

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