What does ASCII actually cover?

ASCII defines 128 characters: 95 printable (letters, digits, punctuation, space) and 33 control codes. Everything beyond that (accented letters, curly quotes, emoji, CJK) is not ASCII, it is Unicode. The tools accept non-ASCII input and handle it as UTF-8 bytes by default.

What is the difference between code points and bytes in the encoder options?

A code point is the Unicode number for a character. A byte is the actual 8-bit value on disk. For ASCII characters they are the same number. For anything else, one code point can be multiple bytes in UTF-8 (1, 2, 3, or 4). Bytes are usually what you want for transmission; code points for teaching or inspecting Unicode.

Why is there a separate lowercase and uppercase tool?

Turkish has a dotted and dotless I that JavaScript's default toUpperCase() and toLowerCase() get wrong. The same applies to Azerbaijani and Lithuanian. The dedicated tools use the correct locale-aware transformation. For English and most European languages, the built-in works fine.

Can I decode back to the original text?

Yes. For every encoder, there is a matching decoder in this category or an adjacent one. ASCII to Base64 has its partner at Base64 to ASCII, and so on for binary, bytes, and arbitrary base. Encoding is lossless: decode gives you back exactly what you encoded.

Are my inputs sent to a server?

No. Every ASCII tool runs fully client-side. Text, binary, hex, and every other format stay in the browser. The network tab confirms zero requests during any encode or decode operation.

ASCII Tools

ASCII tools handle the text-to-byte conversion work that sits at the base of almost every encoding problem. A full set of browser-based utilities covering every direction programmers, students, and hobbyists reach for: text into binary, hex, decimal, Base64, Morse code, HTML entities, UTF-8 bytes, plus the reverse decoders from each format back to text.

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ASCII Case Converter →

ASCII to Decimal Converter →

ASCII to Hexadecimal Converter →

ASCII to HTML Entities Converter →

ASCII to Image Converter →

ASCII to Lowercase Converter →

ASCII to Morse Code Converter →

ASCII to Octal Converter →

ASCII to Uppercase Converter →

ASCII to UTF-8 Bytes Converter →

Base64 to ASCII Decoder →

Convert Arbitrary Base to ASCII →

Convert ASCII to Arbitrary Base →

Convert ASCII to Base6 →

Convert ASCII to Bytes →

Convert Binary to ASCII →

Convert Bytes to ASCII →

Convert Data URI to ASCII →

Convert Decimal to ASCII →

Convert Hexadecimal to ASCII →

Convert HTML Entities to ASCII →

Convert Morse to ASCII →

Convert Octal to ASCII →

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Convert UTF-8 to ASCII →

Draw ASCII Table →

Flip ASCII Bits →

Generate ASCII Characters →

Generate Random ASCII Online →

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