ASCII to Binary Converter

Convert any character to its ASCII binary, decimal and hex code — or look up any character in the full ASCII table.

What Does This Tool Do?

Convert any text character to its ASCII code in binary, decimal and hexadecimal. Shows a per-character breakdown table — useful for learning ASCII encoding or debugging character data.

Key Features

🔤
Per-Character
Binary, decimal and hex for each character.
📊
Table View
All characters in a clear comparison table.
📋
Copy Binary
Copy binary string of all characters.
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Live
Updates as you type.

How to Use

  1. Type one or more characters in the input.
  2. The binary, decimal and hex codes appear instantly.
  3. Copy the binary output or view the character table.

Frequently Asked Questions

What is ASCII?▾
ASCII (American Standard Code for Information Interchange) assigns numbers 0–127 to characters. A=65, B=66, … a=97, b=98, space=32, etc.
Why 8 bits per character?▾
Although ASCII only uses 7 bits (0–127), computers use 8-bit bytes as the standard unit. The extra bit allows for extended character sets (128–255).
What is the binary for "A"?▾
"A" is ASCII 65, which in 8-bit binary is 01000001.