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ASCII Converter – Text to ASCII, Hex, Binary & Back

Convert text to ASCII codes and decode back in decimal, hex, binary, or octal — live, private, and 100% browser-based.

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What is the ASCII Converter – Text to ASCII, Hex, Binary & Back?

Convert text to numeric character values and decode them back. Standard ASCII covers values 0–127; for characters outside that range, the tool shows their Unicode code points.

What you get:

  • Text → codes: decimal, hexadecimal, binary, and octal values
  • Codes → text: decode decimal, hexadecimal, binary, or octal values
  • Per-character breakdown: see values in each base, plus names for common control characters such as NUL, LF, and DEL
  • Runs in your browser: conversion is done locally, without sending text to a conversion service

Useful for checking character values, learning about ASCII and Unicode, or converting between text and numeric codes.

How it works

  1. Choose direction Text → Codes: type or paste any text (ASCII, emoji, or Unicode) Codes → Text: paste numbers to decode

  2. Pick your base Select Decimal, Hex, Binary, or Octal. The tool updates instantly — no "Convert" button needed.

  3. Set separator Space, comma, newline, or custom. The parser is tolerant:

Hex: 48 65 6C, 0x48,0x65, or 48656C Binary: 01001000 01100101 or 0b1001000 Decimal: 72,101,108

  1. Read the results Top output shows your chosen base Four quick-copy buttons give you all formats at once The character table breaks down each code:

  2. Warnings that help

127: shows Unicode code point (ASCII is 0–127) Control chars: displays names instead of blank spaces Conversion runs in your browser; your text is not sent to a conversion service.

Examples

Text to decimal ASCII

Classic text to ASCII conversion

Hello
 
72 101 108 108 111

Hex to ASCII text

Decode hexadecimal values into text

48 65 6C 6C 6F 20 57 6F 72 6C 64
 
Hello World

Binary to ASCII

Convert 8-bit binary with spaces

01001000 01101001 00100001
 
Hi!

Frequently asked questions

What is an ASCII converter?

An ASCII converter translates characters to numeric codes and back. Standard ASCII covers values 0–127. This tool also handles Unicode characters by showing their code points.

How do I convert text to ASCII?

Select "Text → Codes", type your text, and choose Decimal, Hex, Binary, or Octal. The output updates live; for example, "A" becomes 65 (decimal), 41 (hexadecimal), or 01000001 (binary).

How do I convert ASCII codes back to text?

Select "Codes → Text", paste your numbers, and choose the matching base. The tool accepts spaces, commas, or newlines.

How do I use the hex to ASCII converter?

Choose Hex base, paste codes such as 48 65 6C 6C 6F, and switch to "Codes → Text" to decode them as "Hello". A 0x prefix is also accepted.

How do I use the binary to ASCII converter?

Choose Binary base and paste groups such as 01001000 01101001 to decode "Hi". The tool also accepts 0b prefixes.

What's the difference between ASCII and Unicode?

ASCII is a 7-bit character set with values from 0 to 127. Unicode includes characters beyond ASCII, such as accented letters and emoji. This tool displays their Unicode code points.

Why am I seeing numbers above 127?

Those values represent characters outside standard ASCII, such as é or 😀. The tool displays the Unicode code point rather than limiting the output to ASCII.

What are control characters like NUL, LF, and DEL?

Control characters are non-printing ASCII values. The character breakdown names common ones, including NUL, LF (line feed), CR (carriage return), and DEL.

Does this work offline?

After the page has loaded, conversion runs in your browser and does not require a connection to a conversion service.

What separators can I use?

The tool accepts spaces, commas, and newlines between codes. You can also choose a separator for the encoded output.

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