Text to Binary
Convert any text to its binary (ASCII) representation.
How to use this tool
- Enter text in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your binary and the full breakdown beneath it.
Convert any text to its binary (ASCII) representation.
How it works
This tool converts any typed or pasted text into its binary (base-2) representation using ASCII encoding. Each character is translated into an 8-bit binary number, and the groups are displayed separated by spaces so every character's code is easy to read individually.
For example, the letter 'A' has the ASCII code 65, which in 8-bit binary is 01000001. The word 'Hi' becomes 01001000 01101001. Numbers, punctuation, and spaces each have their own ASCII codes and are converted the same way.
Paste or type your text into the input field and the binary output appears immediately. This is useful for understanding character encoding, creating programming exercises, encoding short messages as binary puzzles, or debugging encoding issues in software development.
Remember that binary output grows quickly -- each character produces 8 digits plus a space, so a 10-character word generates roughly 90 characters of binary. For long texts, the output will be substantial.
Worked example
Convert a short word to binary
- Type: 'Cat'
- 'C' = ASCII 67 = 01000011
- 'a' = ASCII 97 = 01100001
- 't' = ASCII 116 = 01110100
- Output: '01000011 01100001 01110100'
01000011 01100001 01110100
Common mistakes to avoid
- Forgetting that spaces are also characters -- a space becomes 00100000, so binary output is longer than you might expect.
- Trying to enter binary-looking numbers as input expecting encoding -- this tool converts text TO binary, not the other way around.
- Pasting emoji or characters outside the ASCII range and expecting clean 8-bit groups -- non-ASCII characters need multi-byte encoding.
Key terms
- ASCII
- A character encoding standard that assigns a number (0-127) to each common letter, digit, and symbol used in English text.
- Binary (base-2)
- A number system using only 0 and 1. Computers store all data as binary digits (bits).
- 8-bit group (byte)
- Eight binary digits representing a single character in ASCII encoding, e.g. 01000001 for 'A'.
Frequently asked questions
- What encoding does this use?
- Each character is converted to its ASCII code and displayed as an 8-bit binary number.