Text to Binary Converter

What Is the Text to Binary Converter?

Every character a computer displays is stored internally as a number, and that number can be written in binary (base 2). This tool converts text into its binary representation -- each character shown as a space-separated group of 1s and 0s -- and converts binary back into readable text.

How to Use This Tool

Choose a direction, then paste text (to encode) or space-separated binary groups (to decode). The result updates as you type.

How the Conversion Works

Worked Example

Practical Uses

• Teaching or learning how text is represented at the bit level
• Encoding a short message in binary for a puzzle or novelty use
• Debugging low-level text encoding issues

For a hexadecimal representation instead, see the Text to Hex Converter. For each character's exact Unicode code point, use the Unicode Code Point Converter.

A Longer Worked Example

Encode the word "Hi". The letter H has code point 72, which is 1001000 in binary, and the letter i has code point 105, which is 1101001. The output is therefore 1001000 1101001, two groups separated by a space. Decoding that string reverses the process: each group is read as a base-2 number, turned into a character, and the characters are joined. Now compare with a digit: the character "7" is code point 55, which is 110111 in binary, only six bits. The tool does not pad short groups to eight bits, so do not be surprised if the results look shorter than the 8-bit ASCII tables you may have seen in textbooks.

Padded and Unpadded Binary

Many tutorials show letters as 8-bit bytes with leading zeros, for example 01001000 for H. This converter shows the shortest representation, 1001000. When decoding, leading zeros do not matter, so you can paste either form and get the same character back. If you need fixed 8-bit output for a class assignment or a puzzle, add zeros to the left of each group until it has eight digits. The value stays the same.

Decoding Tips

• Separate groups with spaces. Without spaces, the tool reads the entire string as a single very large number and the result will not be what you expect.
• Use only the digits 0 and 1. A group that starts with any other character cannot be read as binary and triggers an error message, and stray digits inside a group can silently change the value.
• Check for stray spaces, line breaks or copy artifacts if the decoded text looks garbled, since each group must be a complete character code.
• If the result is a strange symbol, one of the groups probably has a missing or extra digit.

Important Limits

This converter works with Unicode code points, not with the bytes of a specific text encoding. For plain English, that is identical to ASCII. For characters outside ASCII, such as accented letters, non-Latin scripts and emoji, the output is the code point number in binary, not the multi-byte UTF-8 sequence that a file or network packet would contain. A byte-level view of the same text would look different, with several 8-bit groups per character. Use this tool for learning, puzzles and code point inspection, and use a byte-oriented tool when you must match exact stored bytes.

Good Ways to Practice

Try encoding a lowercase letter and its uppercase twin. Their binary values differ in a single bit position, which is why letter case can be flipped so cheaply in low-level code. Comparing the two outputs is a quick, concrete way to see how character sets are organised.

Frequently Asked Questions