Binary Converter
Convert text to binary, hexadecimal, decimal, and octal. Encode and decode between text and number systems instantly.
Our binary converter transforms text into its numeric representations across four number systems: binary (base-2), hexadecimal (base-16), decimal (base-10), and octal (base-8). Each character in your text is converted to its corresponding numeric value based on its Unicode code point, giving you the precise digital encoding that computers use internally to represent text.
Binary conversion shows each character as a sequence of 0s and 1s, the fundamental language of all digital computing. Every piece of data a computer processes is ultimately stored and transmitted as binary digits. Seeing your text in binary gives you direct insight into how machines represent human language at the lowest level. Each ASCII character becomes an 8-bit binary number, while Unicode characters may use more bits.
Hexadecimal conversion represents each character as a compact base-16 number using digits 0-9 and letters A-F. Hexadecimal is the preferred notation in programming, web development, and computer science because it maps cleanly to binary (each hex digit represents exactly 4 bits) while being much shorter and more readable. Web developers encounter hex constantly in color codes, character encodings, and memory addresses.
Decimal conversion shows the standard base-10 numeric value of each character. This is the most intuitive number system for humans and is commonly used in ASCII tables and character reference charts. When you look up a character code in documentation, it is typically shown in decimal.
Octal conversion uses base-8 representation, which was historically significant in early computing systems and remains relevant in Unix file permissions and certain legacy encodings. Each octal digit represents exactly 3 bits, making it a natural grouping for some binary data.
The tool is invaluable for students learning about number systems and character encoding, developers debugging text processing code, cybersecurity professionals analyzing encoded data, and anyone curious about how computers represent the text we read every day. All conversion happens in your browser with complete privacy.
How to Use
Enter Text
Type or paste the text you want to convert
Choose Format
Select Binary, Hexadecimal, Decimal, or Octal
Copy the Code
Click copy to grab the numeric representation
Binary Converter FAQ
Binary code represents data using only two digits: 0 and 1. Every digital device stores and processes information in binary. Each letter, number, and symbol you type has a binary equivalent based on its character encoding (ASCII or Unicode).
Each character in your text has a numeric code point (for example, 'A' is 65 in ASCII). That number is then converted to its binary equivalent (65 becomes 01000001). The tool performs this conversion for every character in your input.
Hexadecimal (base-16) is widely used in programming, web development, and computer science. It appears in HTML color codes (#FF5733), memory addresses, character encodings, and debugging tools. It is more compact than binary while mapping directly to it.
Yes. Enter binary code (sequences of 0s and 1s) into the tool to decode it back to readable text. The tool can handle both encoding (text to numbers) and decoding (numbers to text).
Yes. The converter handles the full Unicode range, including emoji, accented characters, CJK characters, and symbols. Unicode characters may produce longer numeric sequences than basic ASCII characters.
Yes. All conversion happens in your browser using JavaScript. No data is sent to any server. You can safely convert confidential or sensitive text.
Octal (base-8) uses digits 0-7 and was important in early computing. Today it is most commonly encountered in Unix/Linux file permissions (like chmod 755). Each octal digit represents exactly 3 binary bits.
Each group of 8 binary digits (bits) represents one ASCII character. Read each group from right to left, with each position representing a power of 2: 1, 2, 4, 8, 16, 32, 64, 128. Add the values where there is a 1 to get the decimal number.