Text to Binary Converter
Convert text to binary instantly using UTF-8 encoding. Enter letters, words, sentences, numbers, symbols or Unicode characters and view their binary bytes, decimal byte values, hexadecimal representation and detailed byte-by-byte encoding.
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Text to Binary Converter
The Text to Binary Converter turns readable characters into the binary data used by computers. You can enter a single letter, a word, a sentence, numbers, punctuation, symbols or Unicode text and immediately see the corresponding binary byte sequence.
Binary data consists only of zeros and ones. Text itself is not stored directly inside a computer as visible letters. Instead, a character encoding assigns numeric values to characters, and those numbers are stored as binary bytes. This converter uses UTF-8 because it is the dominant encoding used for modern web pages, software, APIs and text files.
How to Convert Text to Binary
Enter the text you want to encode into the input box and select the output format you prefer. You can keep spaces between binary bytes, join all bits into one continuous value, separate the bytes with commas or display one byte on each line.
Click Convert Text to Binary. The tool encodes the text into UTF-8 bytes and converts each byte from decimal to base 2. Every binary byte is padded to eight digits so that byte boundaries remain easy to identify.
Input:
ABC
UTF-8 / ASCII Decimal:
65 66 67
Hexadecimal:
41 42 43
Binary:
01000001 01000010 01000011Text to Binary Conversion Formula
There is no single mathematical formula that directly converts an arbitrary Unicode character into binary because the character must first be represented using a character encoding. For UTF-8 text, the conversion process can be described as:
Text
↓
Unicode code points
↓
UTF-8 encoded bytes
↓
Decimal byte values
↓
8-bit binary valuesFor ASCII-compatible characters, the process is particularly simple because their UTF-8 byte value equals their ASCII value.
ASCII Text to Binary
ASCII defines numeric values for common English letters, digits, punctuation and control characters. UTF-8 preserves the same byte values for the original ASCII range from 0 through 127.
| Character | Decimal | Hex | Binary |
|---|---|---|---|
| A | 65 | 41 | 01000001 |
| B | 66 | 42 | 01000010 |
| a | 97 | 61 | 01100001 |
| 0 | 48 | 30 | 00110000 |
| 1 | 49 | 31 | 00110001 |
| Space | 32 | 20 | 00100000 |
Example: Convert Hello to Binary
The word Hello contains five ASCII characters. Because each one falls inside the ASCII range, every character requires one UTF-8 byte.
H = 72 = 0x48 = 01001000
e = 101 = 0x65 = 01100101
l = 108 = 0x6C = 01101100
l = 108 = 0x6C = 01101100
o = 111 = 0x6F = 01101111
Result:
01001000 01100101 01101100 01101100 01101111UTF-8 Text to Binary
UTF-8 is a variable-length character encoding. Characters in the basic ASCII range use one byte, but other characters may require multiple bytes. This is important when converting international text, mathematical symbols or emoji to binary.
Because of this variable-length behavior, the number of visible characters can differ from the number of encoded bytes. The calculator separately shows the character count, UTF-8 byte count and total number of binary bits.
Why Are Binary Bytes Usually 8 Bits?
A byte is normally composed of eight bits. Eight binary digits provide 256 possible combinations, ranging from binary 00000000 to 11111111. These correspond to decimal values from 0 through 255.
00000000 = 0
00000001 = 1
01111111 = 127
10000000 = 128
11111111 = 255Displaying each encoded text byte as exactly eight bits makes the output easier to understand and preserves the original byte boundaries.
Binary With or Without Spaces
Binary text is often shown with spaces between bytes because the groups are easier to read. However, some applications require one continuous binary string. This converter supports both representations.
With spaces:
01000001 01000010 01000011
Without spaces:
010000010100001001000011Both values represent the same underlying bytes. The separator only changes how the binary output is displayed.
Text, Decimal, Hexadecimal and Binary
The same encoded byte can be written using several number systems. Developers frequently switch between decimal, hexadecimal and binary depending on the task. Binary makes individual bits visible, while hexadecimal provides a much more compact representation of the same byte data.
Character:
A
Decimal:
65
Hex:
41
Binary:
01000001Where Text to Binary Conversion Is Used
Text-to-binary conversion is useful for computer science education, programming, data encoding, digital communications, embedded systems, protocol debugging, binary file analysis and understanding how character data is represented at the byte level.
Students can use it to study number systems and character encoding, while developers can use the byte breakdown to verify text being transmitted through files, APIs, serial interfaces or network protocols.