Binary to ASCII Converter
Decode binary byte tokens into standard 7-bit ASCII text. Paste binary groups to see the decoded characters and their binary, decimal, and hexadecimal values instantly.
Frequently Asked Questions
What does a binary to ASCII converter do?
It reads each binary value as an ASCII code and returns the matching character. For example, 01001000 01101001 becomes Hi.
How many bits are in an ASCII character?
Standard ASCII uses seven bits, but it is commonly written as an eight-bit byte with a leading zero.
Can I separate binary values with spaces?
Yes. Use spaces, commas, line breaks, or a mixture of those separators between binary tokens.
Why is 01000001 the letter A?
01000001 is binary 65. ASCII assigns decimal 65 to uppercase A.
Why does 10000000 produce an error?
It represents decimal 128, beyond standard ASCII's 0–127 range. It may be part of a UTF-8 sequence; none of the current binary converters decode it.
Does this converter decode Unicode binary?
No. It is intentionally limited to standard ASCII. None of the current binary converters decode UTF-8 multi-byte sequences; use the ASCII Converter to inspect Unicode code points.
What is binary for a space?
A space is decimal 32, hexadecimal 20, and binary 00100000.
Can I copy the decoded text?
Yes. Use the copy button beside the result to copy the decoded ASCII text.
Decode binary byte values into standard ASCII text. For example, 01001000 01101001 represents Hi because the two byte values are 72 and 105.
How to convert binary to ASCII
How to convert 01000001 binary to ASCII A
Enter 01000001. This eight-bit value is decimal 65, which is uppercase A in ASCII.
How to decode binary bytes such as 01001000 01100101
Paste the byte groups separated by spaces. 01001000 01100101 decodes to He.
How to read seven-bit ASCII written as eight bits
ASCII uses values 0 through 127, but data is often written as full bytes. A leading zero in 01000001 keeps the byte aligned to eight bits.
How to decode binary data separated by lines or commas
Spaces, commas, and line breaks can separate byte values. This makes it practical to paste a captured data stream directly into the converter.
Common use cases
- Decode binary clues and messages in CTF challenges.
- Inspect raw byte payloads captured from HTTP, TCP, serial, or other low-level protocols.
- Read the ASCII portion of a binary memory or firmware dump.
- Validate that a binary ASCII payload decodes to the expected command or response.
- Investigate diagnostic output and fixed messages from embedded firmware.
Reading binary ASCII bytes
Standard ASCII needs only seven bits, but it is commonly shown as an eight-bit byte with a leading zero. 01000001 is decimal 65, hexadecimal 41, and uppercase A. Control values are displayed with visible control-picture symbols so they do not disappear in the output.
When to use this vs binary-translator
This converter is single-direction, strict, and ASCII-only (0–127). It rejects bytes above 127 so malformed ASCII data is clear. Binary Translator is a bidirectional convenience tool that treats each 8-bit group as one JavaScript charCode. It works well for basic single-byte content but does not decode UTF-8 multi-byte sequences.
What is the binary value of common ASCII characters?
| Character | Binary | Decimal |
|---|---|---|
A | 01000001 | 65 |
a | 01100001 | 97 |
0 | 00110000 | 48 |
| space | 00100000 | 32 |
! | 00100001 | 33 |
| line feed | 00001010 | 10 |