ASCII to Binary
Turn ASCII characters into binary. Each character becomes its eight-bit code.
About the ASCII to Binary converter
This tool takes ASCII characters and prints each one as its eight-bit binary code. ASCII is the long-standing standard that assigns a number to letters, digits, and common symbols, so the capital A (code 65) becomes 01000001. It is a clear way to see how text is stored as bits and is popular for teaching, electronics labs, and coding puzzles.
How to use it
- Type or paste your ASCII characters into the input.
- The eight-bit binary codes appear immediately, one space-separated byte per character.
- Copy the output for a worksheet, circuit exercise, or chat puzzle.
Because standard ASCII defines codes 0 to 127, every basic character fits neatly into a single byte, with the high bit left as zero. Characters beyond the ASCII set, such as emoji, fall outside this range and are encoded as multiple UTF-8 bytes instead. The whole conversion runs in your browser, so your input is never uploaded.
Frequently asked questions
What is the difference between ASCII and text input here?
ASCII covers the standard 0 to 127 character codes such as letters, digits, and common symbols. Each of those characters maps to a single eight-bit byte, with the leading bit zero.
Why does every character become exactly eight bits?
ASCII codes fit within one byte, and a byte is eight bits. Grouping into bytes makes the output easy to read and to reverse with a binary decoder.
What happens with characters outside ASCII?
Characters such as emoji or accented letters are beyond the ASCII range and are encoded as multiple UTF-8 bytes, producing more than eight bits each.
Is my input sent to a server?
No. The conversion is performed in your browser, so nothing you enter is uploaded.