Text to Binary Converter
Convert text to binary (0s and 1s) or decode binary back to readable text. Also shows hex representation for each character.
Text Input
0 charsBinary Output
Binary Input
space-separated bytesText Output
How Binary Encoding Works
Every character you type has a number behind it. The letter 'H' is 72 in ASCII. The converter takes that number and writes it in base 2 (binary), padding to 8 bits: 01001000. Do that for each character and you have binary text.
The tool shows bytes separated by spaces so they're readable. Each group of 8 digits is one character. A hex column is included because hex is often more useful in practice — two hex digits map directly to one byte, which is why programmers use it for memory addresses, color codes, and file formats.
Converting Binary Back to Text
Paste your binary into the right panel, one byte per group separated by spaces. The tool reads each 8-digit group, converts it to decimal, and looks up the character. If a group doesn't have exactly 8 digits or contains non-binary characters, you'll get an error message pointing to the problem.
Frequently Asked Questions
How does text to binary conversion work?
Each character in a text string has a numeric code in the ASCII or Unicode standard. Binary conversion takes that numeric code and expresses it in base 2 (using only 0 and 1). For example, the letter 'A' has ASCII code 65, which is 01000001 in 8-bit binary. A space character (ASCII 32) is 00100000. The converter does this for every character and separates the binary bytes with spaces for readability.
What is the difference between ASCII and Unicode binary?
ASCII covers 128 characters (0-127) and can be represented in 7 or 8 bits. Unicode (UTF-8) supports over 1 million characters including international alphabets, emoji, and symbols. Most binary converters use UTF-8, which means common English characters still use 8 bits, but non-ASCII characters like é, ñ, or 中 use 2-4 bytes (16-32 bits) each.
Can I convert binary back to text?
Yes. Paste space-separated binary bytes into the binary input panel and click Convert to Text. The tool reads each 8-bit group, converts it back to its decimal value, and maps it to the corresponding character. Make sure the binary is valid (only 0s and 1s) and that bytes are separated by spaces — the converter will report errors for malformed input.
What is hexadecimal and how does it relate to binary?
Hexadecimal (hex) is base 16, using digits 0-9 and letters A-F. Each hex digit represents exactly 4 binary bits, so 8-bit binary bytes convert neatly to 2 hex digits. For example, 01000001 (binary for 'A') is 41 in hex. Hex is often preferred in programming because it's more compact than binary while still mapping cleanly to binary values.
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