Binary to Text Converter
Binary is the fundamental language of computers, using only 0s and 1s to represent all data. Every character, image, and file is ultimately stored as binary. Converting binary to text requires understanding character encoding standards like ASCII (American Standard Code for Information Interchange) and UTF-8. In ASCII, each 8-bit binary number represents a single character: for example, 01000001 (binary) equals 65 (decimal) equals 'A' (character). UTF-8 extends this to support any Unicode character, using 1 to 4 bytes per character. This converter transforms between binary and text freely in both directions. For binary input, enter space-separated 8-bit groups (e.g., '01001000 01100101 01101100 01101100 01101111'). The converter displays the decoded text plus the decimal and hexadecimal equivalents of each byte. For text input, the converter generates the binary representation and shows decimal and hex values. Use this tool to understand how computers store text, debug character encoding issues, or verify data transmission.
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How binary encoding works
Each character is represented by an 8-bit binary number. The binary number is converted to decimal (0-255), which maps to a character in ASCII or UTF-8. For example:
- 'A' = 01000001 (binary) = 65 (decimal) = 41 (hex)
- 'a' = 01100001 (binary) = 97 (decimal) = 61 (hex)
- '0' = 00110000 (binary) = 48 (decimal) = 30 (hex)
- 'space' = 00100000 (binary) = 32 (decimal) = 20 (hex)
Binary to text converter: frequently asked questions
What is binary in computing?
Binary is a base-2 number system using only 0s and 1s. Every piece of data in a computer is ultimately represented as binary. A single binary digit (0 or 1) is called a bit. Eight bits together form a byte, which can represent a single character in ASCII or one part of a multibyte UTF-8 character.
What is ASCII?
ASCII (American Standard Code for Information Interchange) is a character encoding standard that uses 7 bits (or 8 bits with parity) to represent 128 characters, including letters, digits, punctuation, and control characters. For example, the letter 'A' is 65 in decimal, 01000001 in binary, or 41 in hexadecimal.
What is UTF-8?
UTF-8 is a variable-width character encoding that can represent any Unicode character. It uses 1 to 4 bytes per character. ASCII characters (0-127) are represented with 1 byte, and other characters use multiple bytes. UTF-8 is the standard encoding for the modern web and text files.
How do I convert 8-bit binary to a character?
First, convert the 8-bit binary to a decimal number. For example, 01000001 is 0*128 + 1*64 + 0*32 + 0*16 + 0*8 + 0*4 + 0*2 + 1*1 = 65. Then look up the decimal in an ASCII table to find the character. 65 is 'A'.
What is the difference between binary and hexadecimal?
Binary uses base-2 (0-1), hexadecimal uses base-16 (0-9 and A-F). One hexadecimal digit represents exactly 4 binary digits, making hex more compact for reading. For example, 1111 1111 in binary is FF in hexadecimal, both representing 255.
Official sources
- ASCII Standard: ASCII on Wikipedia.
- UTF-8 Standard: RFC 3629: UTF-8 Standard.
Reviewed by the CalculatorHub team, edited by James Graham, 14 June 2026. See our methodology.