Binary to Text
Convert binary (space-separated 8-bit groups) back to readable text.
How to use this tool
- Enter binary in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your text and the full breakdown beneath it.
Convert binary (space-separated 8-bit groups) back to readable text.
How it works
This tool converts binary code back into readable text. It expects input formatted as 8-bit groups separated by spaces, for example 01001000 01100101 01101100 01101100 01101111, and decodes each group back to its corresponding ASCII character.
Each 8-bit number is interpreted as a decimal value between 0 and 255, then matched to the ASCII table to retrieve the character. The decoded characters are concatenated to produce the original text. Provided the binary was encoded correctly, the output is an exact reconstruction of the source string.
Use this tool to decode binary puzzles, verify the output of the companion Text to Binary tool, check manually crafted binary strings for errors, or learn how character encoding works in practice.
Input must be well-formed: each group should be exactly 8 digits of 0s and 1s, separated by single spaces. Groups with fewer or more than 8 digits, or characters other than 0 and 1, will produce incorrect or error output.
Worked example
Decode a binary message
- Paste: '01001000 01100101 01101100 01101100 01101111'
- The tool splits on spaces, producing five 8-bit groups.
- Each group is converted: 72, 101, 108, 108, 111.
- ASCII lookup: H, e, l, l, o.
- Output: 'Hello'
Hello
Common mistakes to avoid
- Forgetting to separate groups with spaces -- the tool reads groups sequentially and needs the space delimiter to know each character boundary.
- Entering 7-bit or 4-bit groups instead of full 8-bit bytes -- each group must be exactly 8 digits.
- Pasting binary with line breaks instead of spaces -- replace newlines with spaces before decoding.
Key terms
- ASCII table
- A mapping of integers 0-127 to characters, digits, and control codes used as the foundation of text encoding.
- Byte
- A group of 8 bits, representing a single ASCII character when decoded.
- Decoding
- The process of converting encoded data (here, binary) back into its original human-readable form.
Frequently asked questions
- What format does this expect?
- Paste 8-bit binary groups separated by spaces, e.g. '01001000 01101001'.