What does the ASCII converter do?

It walks between three views of the same data — characters, decimal codes, and binary or hex representations of those codes. Type a single A and you'll see ASCII 65 along with binary 01000001. Type 65 and you get back A. The conversion helps with classroom explanations, debugging text issues, and translating between formats.

What's the ASCII range?

Pure ASCII spans 0 to 127 because it only uses seven bits. The first 32 codes are control characters like newline, tab, and escape. The next chunk from 32 to 126 covers space, the alphabet in both cases, the digits, and common punctuation. Code 127 is DEL. Anything from 128 to 255 is 'extended ASCII' that varies by code page (Windows-1252, ISO-8859-1, and so on) and isn't standardized.

What's the difference between ASCII and Unicode?

ASCII covers 128 English-centric characters while Unicode reaches more than 149,000 characters across every writing system plus emoji and symbols. UTF-8 — the standard Unicode encoding for the web — uses identical bytes to ASCII for the first 128 codepoints, which is why pure ASCII files are also valid UTF-8 files. Anything outside English (é, ñ, 中, 😀) needs Unicode.

Why does the converter show binary too?

ASCII codes are technically seven bits, but computers always store them as full eight-bit bytes with a leading zero. Showing both the decimal code and the binary representation (01000001 for A, for example) helps people see the relationship between abstract character codes and the actual bytes that hardware moves around.

Can I convert non-ASCII characters?

Pure ASCII can't represent characters outside the 0-127 range. Accented letters, CJK characters, and emoji each need a Unicode codepoint or a UTF-8 byte sequence, and the converter falls back to one of those representations rather than pretending the character fits. For full international text work, switch to a Unicode-aware converter.

What about ASCII art and ANSI?

ASCII art uses printable ASCII characters to draw pictures and diagrams — old text-mode games, email signatures, banner headers in README files. ANSI is a separate extension that defines Windows-specific characters in the 128-255 range, which is what gave older terminal applications their box-drawing glyphs. Modern systems use Unicode for both purposes.

Is the data sent anywhere?

No. The conversion runs in your browser, which is the right behavior for classroom use, debugging encoding bugs, and working with text you'd rather not send to a server.

ASCII Converter & Translator

Convert text to ASCII codes and ASCII values back to text online. Free ASCII translator and encoder with decimal, hex, and binary code output.

Encoding / Decoding

Instant results

Text

ASCII Codes

How to Use ASCII Converter & Translator

Enter text or ASCII codes

Type characters to see their ASCII codes, or punch in numbers from 0 to 127 to see the matching characters. The conversion runs the moment you stop typing.

View representations

For each character you'll see four parallel views — the character itself, its decimal ASCII code, the hexadecimal equivalent, and the eight-bit binary representation that hardware actually stores.

Convert in either direction

Type a phrase to watch each character translate to its ASCII code, or paste a list of space-separated numbers to decode them back into readable text. The two directions share the same workspace.

Note non-ASCII limits

ASCII tops out at 127, so accented characters like é, CJK text, and emoji can't be represented in the strict standard. Switch to a Unicode-aware converter when your input ventures past basic English.

When to Use ASCII Converter & Translator

Teaching what character encoding really is

Once a student sees that A is just 65 and B is just 66, the magic of text storage starts to feel like ordinary arithmetic. The same exercise works in introductory CS classes, in digital literacy workshops, and in any history-of-computing module that wants to ground later topics in something concrete.

Tracking down encoding bugs

When text shows up looking like mojibake, dropping it into an ASCII view reveals what bytes actually arrived. Smart quotes substituted for straight ones, em dashes where hyphens belong, or a stray byte-order mark at the front of a file all become obvious as soon as you see the underlying codes.

Embedding control characters in code

The first 32 ASCII slots (null, tab, newline, carriage return, escape, and friends) don't have keys you can press cleanly. Using their numeric codes lets you write the exact byte you need into source files, configuration, or test fixtures without fighting your editor.

Working with legacy data

COBOL programs, mainframe extracts, and older databases often kept text as raw ASCII bytes. Knowing how to translate between those byte values and modern strings is a core skill when you're migrating data off any system from that era or just trying to read its dumps.

ASCII Converter & Translator Examples

Word to ASCII codes

Input

Hello

Output

H=72, e=101, l=108, l=108, o=111

Every letter ships with its own number. Capital H sits at 72 while lowercase h is 104, a 32-point gap that holds true across the whole alphabet, which is why so many text-processing tricks rely on flipping that single bit.

ASCII to character

Input

Codes: 72 101 108 108 111

Output

Text: Hello

Run the conversion the other way and a list of numbers turns back into a word. This is exactly what you'd do when you've pulled bytes out of a packet capture or memory dump and want to see whether any of them spell something readable.

Special characters

Input

Tab + Newline + 'A'

Output

9 (tab), 10 (newline), 65 (A)

Tab is 9, newline is 10, carriage return is 13, and escape is 27. None of them render visibly, but each one has the same kind of code as a printable letter, which makes them surprisingly easy to embed once you know the numbers.

Tips & Best Practices for ASCII Converter & Translator

1.True ASCII stops at 127. Anything beyond English — é, ñ, 中, every emoji — needs Unicode and UTF-8 to be represented correctly, so don't try to force those characters into a pure ASCII pipeline.
2.Files exported from Excel often start with a byte-order mark (U+FEFF) even when they're saved as UTF-8. UTF-8 doesn't require it, but the extra bytes can confuse parsers that aren't expecting them, so watch for that signature at offset zero.
3.A few codes are worth memorizing once and reusing forever. Capital A is 65, lowercase a is 97, the digit 0 is 48 (which trips people up), space is 32, and newline is 10. Lowercase always sits exactly 32 above its uppercase partner.
4.The control range from 0 to 31 isn't visible on screen but it's deeply functional. Tab, newline, and carriage return shape how text wraps, while a handful of other codes appear in serial protocols and terminal control sequences.
5.ASCII still works on every computer ever built that handles text, which is why UTF-8 keeps the same byte values for the first 128 codepoints. Any plain ASCII file is also a valid UTF-8 file by accident.
6.In source code prefer the literal 'A' over the magic number 65. Readers shouldn't have to translate ASCII tables in their head, so reach for numeric codes only when you genuinely need a control character or a range comparison.

Frequently Asked Questions

ASCII (American Standard Code for Information Interchange) assigns a unique number from 0 to 127 to each English character. Capital A is 65, capital B is 66, lowercase a is 97, the digit 0 is 48, and space is 32. The standard was designed in the 1960s for telex equipment and went on to become the foundation of essentially all computer character encoding. UTF-8 inherits ASCII verbatim for those first 128 codepoints.

ASCII Converter & Translator

How to Use ASCII Converter & Translator

Enter text or ASCII codes

View representations

Convert in either direction

Note non-ASCII limits

When to Use ASCII Converter & Translator

Teaching what character encoding really is

Tracking down encoding bugs

Embedding control characters in code

Working with legacy data

ASCII Converter & Translator Examples

Word to ASCII codes

ASCII to character

Special characters

Tips & Best Practices for ASCII Converter & Translator

Frequently Asked Questions

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