Binary to ASCII
Convert binary bytes into ASCII characters. Paste space-separated binary to decode.
About the Binary to ASCII converter
This tool reads space-separated binary bytes and turns each one into its ASCII character. ASCII maps numbers to letters, digits, and symbols, so the byte 01000001 (decimal 65) becomes A. It is the companion to an ASCII-to-binary tool and is handy for decoding puzzle answers, reading machine output, and confirming that an encoder produced the right bytes.
How to use it
- Paste your binary into the input, with each eight-bit byte separated by a space.
- The decoded ASCII characters appear instantly below.
- Copy the readable result to reuse it.
For clean decoding, give each character a full eight-bit byte; values 0 to 127 map directly to standard ASCII characters. Bytes with the high bit set (128 to 255) fall outside basic ASCII and may render as extended or replacement characters. The conversion happens in your browser, so the binary you paste is never sent to a server.
Frequently asked questions
How should the binary be formatted?
Provide eight-bit bytes separated by spaces, such as 01001000 01101001. Each byte is decoded to one character.
Which byte values map to standard ASCII?
Values 0 to 127 are standard ASCII characters. Bytes from 128 to 255 are outside basic ASCII and may show as extended or replacement characters.
What if a byte is not eight bits long?
ASCII characters use a full byte, so groups that are not eight bits may decode incorrectly. Re-check the spacing if the output looks wrong.
Does the tool upload my binary?
No. Decoding runs entirely in your browser, so the data you paste stays on your device.