Interactive Demo — Text Encoding

Text → Binary / Hex Decoder

Type any text below. Each character is broken down into its ASCII decimal value, 8-bit binary, and hex — the same encoding underneath every file, packet, and password you'll work with.

Live Decoder updates as you type
Start typing to see each character decoded.
Key Concepts
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ASCII
A standard that maps every keyboard character to a number 0–127. Computers don't store letters — they store numbers that get displayed as letters.
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One Byte, One Char
Standard ASCII characters each fit in a single byte — 8 bits — which is exactly why the byte became computing's basic unit of storage.
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Same Number, Three Views
Decimal, binary, and hex are just three ways to write the exact same value. Programmers pick whichever is easiest to read for the task at hand.