Binary code represents data using only two digits: 0 and 1. Each group of 8 binary digits (a byte) corresponds to one character in the ASCII encoding standard.

01 Binary Tool

Text to Binary

Convert any text to binary code — or decode binary back to text. Hex, octal and decimal output included. Live character table.

Output:

Separator:

Text Input 0 chars

Binary Output 0 chars

0Characters

0Bytes

0Bits

0Words

How does text-to-binary conversion work?

Every character you type has a numeric code in the ASCII or Unicode standard. Binary conversion takes that code and writes it in base-2 (zeros and ones). Each character becomes an 8-bit byte — a group of exactly eight binary digits.

Char	Binary	Hex	Octal	Decimal
A	01000001	41	101	65
a	01100001	61	141	97
0	00110000	30	60	48
Space	00100000	20	40	32
!	00100001	21	41	33

💻 CS education

Learn how computers store text. Every email, document, and webpage is ultimately binary at the hardware level.

🔐 Encoding & ciphers

Encode secret messages in binary for basic ciphers, educational cryptography exercises, or puzzle games.

🛠️ Debugging

Verify character codes when debugging encoding issues — especially useful for non-ASCII and special characters.

📚 Reference tool

Instantly look up the binary, hex, octal and decimal value of any character using the character breakdown table.

Frequently asked questions

How do I convert text to binary?

Type or paste your text into the input box — the conversion happens automatically. Each character is converted to its 8-bit ASCII binary representation. Bits are separated by spaces by default.

How do I decode binary back to text?

Switch to "Binary → Text" mode, paste your binary string with 8-bit groups separated by spaces, and click Convert. The tool validates each group before decoding.

What is binary code?

Binary code represents data using only two digits: 0 and 1. Each group of 8 binary digits (a byte) maps to one character in the ASCII encoding standard. Computers use binary internally for all data storage and processing.

Can this tool convert to hexadecimal and octal?

Yes — switch the Output format pill to Hex, Octal, or Decimal to see the same text encoded in different number bases. The character breakdown table always shows all four formats simultaneously.

What is the binary representation of the letter A?

The uppercase letter A has ASCII code 65. In binary that is 01000001. In hexadecimal it is 41. In octal it is 101. You can see this instantly in the character breakdown table when you type "A".