ASCII / Unicode Explorer

An ASCII/Unicode explorer is a reference tool that lets you browse, search, and look up characters across the ASCII and Unicode character sets. ASCII defines 128 characters (0–127) including control characters, digits, letters, and symbols. Unicode extends this to over 149,000 characters covering every writing system, emoji, mathematical symbol, and technical character in use today.

Developers regularly need character code references when working with text encoding, escaping special characters in HTML/CSS/JavaScript, debugging encoding issues, or finding the right symbol for documentation. Whether you need the hex code for an em dash, the UTF-8 byte sequence for an emoji, the HTML entity for a copyright symbol, or the CSS escape for a Unicode character, a comprehensive lookup tool saves significant time.

This explorer combines a full ASCII table (0–255 including extended ASCII), a Unicode code point lookup, and browsable Unicode blocks — all in one tool. Click any character to see its decimal, hex, octal, binary, HTML entity, CSS escape, UTF-8 bytes, and UTF-16 code units. Search by character, name, or code point. Everything runs in your browser with no server needed.

1. Browse the ASCII table — The ASCII Table tab shows characters 0–255 with sortable columns. Filter by control characters (0–31), printable characters (32–126), or extended ASCII (128–255). Click any row to see full details.
2. Search for characters — Use the search bar to find characters by name (e.g., "tab"), decimal value (e.g., "65"), hex code (e.g., "41"), or the character itself. Results filter in real-time.
3. Look up Unicode code points — Switch to the Unicode Lookup tab and enter a character, code point (U+1F600), hex value (0x41), or decimal number to see complete encoding information.
4. Browse Unicode blocks — The Unicode Blocks tab lets you explore character ranges like Greek, Cyrillic, Math Operators, Arrows, Box Drawing, Emoji, and more. Click any character to copy it and view its details.
5. Copy any representation — Click any value in the character detail panel (hex, HTML entity, CSS escape, etc.) to copy it directly to your clipboard.

• Complete ASCII reference — Full 0–255 table with decimal, hex, octal, binary, character, HTML entity, and description for every code point. Control characters show their standard abbreviations (NUL, SOH, STX, etc.).
• Unicode code point lookup — Enter any character or code point (up to U+10FFFF) to see its full encoding: Unicode name, hex, decimal, octal, binary, HTML entity, CSS escape, UTF-8 bytes, and UTF-16 code units.
• 16 Unicode blocks — Browse characters from Basic Latin, Latin Extended, Greek, Cyrillic, General Punctuation, Currency Symbols, Arrows, Math Operators, Box Drawing, Block Elements, Geometric Shapes, Misc Symbols, Dingbats, Braille, Emoticons, and more.
• Sortable and filterable table — Sort by decimal code, hex, or character. Filter by character type (control, printable, extended). Search by any property.
• One-click copy — Click any encoding representation to copy it. Copy characters directly from the Unicode blocks grid.
• 100% client-side — All character data and lookups are computed in your browser. No network requests needed.

• HTML entity reference — Find the correct HTML entity (© for ©, — for —) for special characters in web content.
• CSS Unicode escaping — Get CSS escape sequences (\2714 for ✔) for use in content properties and icon fonts.
• Debugging encoding issues — Identify mysterious characters in text by looking up their code points, UTF-8 byte sequences, and UTF-16 representations.
• Finding special characters — Browse mathematical symbols, arrows, box-drawing characters, geometric shapes, and other Unicode blocks for documentation and UI design.
• Understanding control characters — Reference control character names and descriptions (LF, CR, TAB, ESC, etc.) when working with terminal protocols, file formats, or text processing.