Convert ASCII text to binary format instantly with our free ASCII to Binary Converter Tool. Enter your ASCII code like Hello and hit convert to binary button for your binary code output. This makes text-to-binary translation fast.
In the virtual world, everything operates on binary code — computers' own language. Whether text, images, or video, all information stored within a computer is translated as 0s and 1s. One of the most frequently used conversions made by programmers, students, and computer hobbyists alike is ASCII to Binary.
This tutorial will assist you in learning what ASCII is, how ASCII to binary conversion is done, and how you can easily convert text to binary using Seopheonix ASCII to Binary Converter online.
ASCII is an abbreviation for American Standard Code for Information Interchange.
It's a character set created in the 1960s that gives each character, symbol, and punctuation mark used on computers a unique numeric value.
For instance:
The letter A in ASCII is 65
The letter a in ASCII is 97
The number 1 in ASCII is 49
ASCII is utilized across the globe for text communication and data storage, hence being the cornerstone of computer text representation in the modern world.
Binary code is the foundation language of every digital system.
It has just two digits: 0 and 1 — referred to as bits (binary digits). All pieces of information a computer works with are eventually turned into binary.
For instance:
Binary of 65 (A) = 01000001
Binary of 66 (B) = 01000010
Therefore, when you convert ASCII to binary, you're deciphering readable text into something your computer interprets directly.
| Dec | Char | Binary | Description |
| 0 | NUL | 0 | Null character |
| 1 | SOH | 1 | Start of Header |
| 2 | STX | 10 | Start of Text |
| 3 | ETX | 11 | End of Text |
| 4 | EOT | 100 | End of Transmission |
| 5 | ENQ | 101 | Enquiry |
| 6 | ACK | 110 | Acknowledge |
| 7 | BEL | 111 | Bell |
| 8 | BS | 1000 | Backspace |
| 9 | TAB | 1001 | Horizontal Tab |
| 10 | LF | 1010 | Line Feed |
| 11 | VT | 1011 | Vertical Tab |
| 12 | FF | 1100 | Form Feed |
| 13 | CR | 1101 | Carriage Return |
| 14 | SO | 1110 | Shift Out |
| 15 | SI | 1111 | Shift In |
| 16 | DLE | 10000 | Data Link Escape |
| 17 | DC1 | 10001 | Device Control 1 |
| 18 | DC2 | 10010 | Device Control 2 |
| 19 | DC3 | 10011 | Device Control 3 |
| 20 | DC4 | 10100 | Device Control 4 |
| 21 | NAK | 10101 | Negative Acknowledge |
| 22 | SYN | 10110 | Synchronous Idle |
| 23 | ETB | 10111 | End of Trans. Block |
| 24 | CAN | 11000 | Cancel |
| 25 | EM | 11001 | End of Medium |
| 26 | SUB | 11010 | Substitute |
| 27 | ESC | 11011 | Escape |
| 28 | FS | 11100 | File Separator |
| 29 | GS | 11101 | Group Separator |
| 30 | RS | 11110 | Record Separator |
| 31 | US | 11111 | Unit Separator |
| 32 | (space) | 100000 | Space |
| 33 | ! | 100001 | Exclamation mark |
| 34 | " | 100010 | Double quote |
| 35 | # | 100011 | Hash |
| 36 | $ | 100100 | Dollar |
| 37 | % | 100101 | Percent |
| 38 | & | 100110 | Ampersand |
| 39 | 100111 | Single quote | |
| 40 | ( | 101000 | Left parenthesis |
| 41 | ) | 101001 | Right parenthesis |
| 42 | * | 101010 | Asterisk |
| 43 | #ERROR! | 101011 | Plus |
| 44 | , | 101100 | Comma |
| 45 | - | 101101 | Hyphen |
| 46 | . | 101110 | Period |
| 47 | / | 101111 | Slash |
| 48 | 0 | 110000 | Digit 0 |
| 49 | 1 | 110001 | Digit 1 |
| 50 | 2 | 110010 | Digit 2 |
| 51 | 3 | 110011 | Digit 3 |
| 52 | 4 | 110100 | Digit 4 |
| 53 | 5 | 110101 | Digit 5 |
| 54 | 6 | 110110 | Digit 6 |
| 55 | 7 | 110111 | Digit 7 |
| 56 | 8 | 111000 | Digit 8 |
| 57 | 9 | 111001 | Digit 9 |
| 58 | : | 111010 | Colon |
| 59 | ; | 111011 | Semicolon |
| 60 | < | 111100 | Less-than |
| 61 | #ERROR! | 111101 | Equal sign |
| 62 | > | 111110 | Greater-than |
| 63 | ? | 111111 | Question mark |
| 64 | @ | 1000000 | At symbol |
| 65 | A | 1000001 | Uppercase A |
| 66 | B | 1000010 | Uppercase B |
| 67 | C | 1000011 | Uppercase C |
| 68 | D | 1000100 | Uppercase D |
| 69 | E | 1000101 | Uppercase E |
| 70 | F | 1000110 | Uppercase F |
| 71 | G | 1000111 | Uppercase G |
| 72 | H | 1001000 | Uppercase H |
| 73 | I | 1001001 | Uppercase I |
| 74 | J | 1001010 | Uppercase J |
| 75 | K | 1001011 | Uppercase K |
| 76 | L | 1001100 | Uppercase L |
| 77 | M | 1001101 | Uppercase M |
| 78 | N | 1001110 | Uppercase N |
| 79 | O | 1001111 | Uppercase O |
| 80 | P | 1010000 | Uppercase P |
| 81 | Q | 1010001 | Uppercase Q |
| 82 | R | 1010010 | Uppercase R |
| 83 | S | 1010011 | Uppercase S |
| 84 | T | 1010100 | Uppercase T |
| 85 | U | 1010101 | Uppercase U |
| 86 | V | 1010110 | Uppercase V |
| 87 | W | 1010111 | Uppercase W |
| 88 | X | 1011000 | Uppercase X |
| 89 | Y | 1011001 | Uppercase Y |
| 90 | Z | 1011010 | Uppercase Z |
| 91 | [ | 1011011 | Left square bracket |
| 92 | \ | 1011100 | Backslash |
| 93 | ] | 1011101 | Right square bracket |
| 94 | ^ | 1011110 | Caret |
| 95 | _ | 1011111 | Underscore |
| 96 | ` | 1100000 | Grave accent |
| 97 | a | 1100001 | Lowercase a |
| 98 | b | 1100010 | Lowercase b |
| 99 | c | 1100011 | Lowercase c |
| 100 | d | 1100100 | Lowercase d |
| 101 | e | 1100101 | Lowercase e |
| 102 | f | 1100110 | Lowercase f |
| 103 | g | 1100111 | Lowercase g |
| 104 | h | 1101000 | Lowercase h |
| 105 | i | 1101001 | Lowercase i |
| 106 | j | 1101010 | Lowercase j |
| 107 | k | 1101011 | Lowercase k |
| 108 | l | 1101100 | Lowercase l |
| 109 | m | 1101101 | Lowercase m |
| 110 | n | 1101110 | Lowercase n |
| 111 | o | 1101111 | Lowercase o |
| 112 | p | 1110000 | Lowercase p |
| 113 | q | 1110001 | Lowercase q |
| 114 | r | 1110010 | Lowercase r |
| 115 | s | 1110011 | Lowercase s |
| 116 | t | 1110100 | Lowercase t |
| 117 | u | 1110101 | Lowercase u |
| 118 | v | 1110110 | Lowercase v |
| 119 | w | 1110111 | Lowercase w |
| 120 | x | 1111000 | Lowercase x |
| 121 | y | 1111001 | Lowercase y |
| 122 | z | 1111010 | Lowercase z |
| 123 | { | 1111011 | Left curly brace |
| 124 | | | 1111100 | Vertical bar |
| 125 | } | 1111101 | Right curly brace |
| 126 | ~ | 1111110 | Tilde |
| 127 | DEL | 1111111 | Delete |
Let us consider an example to know how ASCII to Binary conversion manually.
Suppose you need to convert the letter 'A' to binary.
Step 1: Determine the ASCII value of 'A' → 65
Step 2: Convert 65 to binary → 01000001
That's it!
Now your letter 'A' is in binary 01000001 form.
Let us consider another example using a word.
Example: Convert "Hi" to Binary
Character ASCII Value Binary Value
H 72 01001000
i 105 01101001
Thus, binary form of Hi = 01001000 01101001
ASCII to Binary conversion finds applications in numerous technical fields like:
Programming: To convert text data into binary for file processing.
Networking: For sending and receiving binary packets via digital communication systems.
Data Encryption: Binary encoding assists in low-level encryption schemes.
Learning Purpose: For students studying computer basics or binary systems.
Embedded Systems: When programming microcontrollers, binary is the need of the hour.
SEO Pheonix ASCII to Binary Converter makes it quick, precise, and easy. Here's how it works:
Type in your text in the input field (e.g., "Hello").
Click Convert to obtain binary output.
Instantly view each character's binary value on screen.
Copy or download the result for your use.
✅ No need to install
✅ Real-time output
✅ 100% free to use
Though conversion may be accomplished online in an instant, it's beneficial to understand the logic:
Formula:
Binary = (ASCII Decimal Value)₂
Example:
Character: A
ASCII Decimal = 65
Now convert decimal 65 to binary:
65 ÷ 2 = 32 remainder 1
32 ÷ 2 = 16 remainder 0
16 ÷ 2 = 8 remainder 0
8 ÷ 2 = 4 remainder 0
4 ÷ 2 = 2 remainder 0
2 ÷ 2 = 1 remainder 0
1 ÷ 2 = 0 remainder 1
Reading remainders from bottom to top: 1000001
Add a leading 0 to make it 8 bits → 01000001
Data Transmission – Binary ensures data can travel across networks.
Storage Systems – All characters in text files are stored as binary.
Programming – ASCII-to-binary encoding helps in bit-level manipulation.
Cybersecurity – Used in hashing, cryptography, and digital signatures.
Learning & Research – For educational purposes in computer science and electronics.
Fast ASCII to Binary Conversion
Handles all printable ASCII characters
Accurate and trustworthy results
Responsive tool – mobile-friendly
No signup and no ads
Reverse conversion support (Binary to ASCII)
As a developer, student, or hobbyist, this tool simplifies converting between text and binary for you without any technical complexity.
Use short text inputs for quick processing.
Always use 8-bit binary codes for every character.
Don't use special symbols if unnecessary.
Verify results with the ASCII table for correctness.
For reverse conversion, use a Binary to ASCII converter.
| Text | Binary Code |
| Hello | 01001000 01100101 01101100 01101100 01101111 |
| ABC | 01000001 01000010 01000011 |
| 123 | 00110001 00110010 00110011 |
| Space | 100000 |
Quick & Costless: No setup or registration.
Correct Results: Constructed using solid encoding algorithms.
Instant Copy/Download: Copy binary code for any text instantly.
Secure & Private: No data is stored or shared.
SEO Pheonix is dedicated to furnishing developers, students, and professionals with easy-to-use, efficient online tools for everyday conversion and coding purposes.
ASCII to Binary conversion is a basic process that fills the gap between human-readable text and machine-readable data. Knowing ASCII and binary gives you a better understanding of how computers communicate internally.
With the SEO Pheonix ASCII to Binary Converter, you can easily and precisely convert any ASCII text to binary format — free, online, and effortless.
Begin converting ASCII code to binary now and see how easy binary language is when you have the right software!
It involves turning readable text or characters into binary code — the numeric computer uses to process and save data.
Use SEO Pheonix's ASCII to Binary Converter. Simply type in your text, press "Convert," and obtain immediate binary output.
Binary of "A" = 01000001
Standard ASCII is 7 bits, but computers typically store each ASCII character in 8 bits (1 byte).
Of course! Reversal can be done using the Binary to ASCII Converter tool on Seopheonix.
Absolutely. While Unicode is prevalent nowadays, ASCII is still the foundation standard in most systems for backward compatibility.