Search ASCII Codes Instantly | Developer Quick Reference ⚡️

Filter, find, and copy ASCII codes (0–127) in real time. Get instant Hex, Decimal, and HTML entities for your dev workflow.

💡 Why use this tool?

Stop memorizing character codes. Use this interactive table to:

• Grab Hex values for CSS or URL encoding.
• Find HTML Entities to escape special characters.
• Identify Control Characters like NULL, ESC, or LF for serial communication.
• Map Decimal to ASCII without doing the mental math.

📘 Pro-Tips

• Smart Search: Filter by anything—'A', '65', '0x41', or 'ESC'. The table updates as you type.
• Copy to Clipboard: Click any cell (Char, Dec, Hex, or Entity) to copy that specific value instantly.
• Handle Invisible Chars: Control characters (0–31) include clear mnemonics and descriptions for easier debugging.
• HTML-Ready: Every character includes its &#...; format, perfect for ensuring consistent cross-browser rendering.

🧐 FAQ

Does it support Extended ASCII or Unicode? No. This tool focuses strictly on the standard 7-bit ASCII set (0–127). This covers all basic English letters, numbers, symbols, and essential control codes.

How do I search for a specific hex value? You can search using the "0x" prefix (e.g., 0x0D) or just the value (e.g., 0D). Both work.

Is the "Char" column copyable? Yes. For printable characters, it copies the character itself. For control characters, it copies the mnemonic (like "NUL").

📚 Trivia: Why stop at 127?

ASCII was originally a 7-bit code. In the 1960s, data storage was expensive. Using 7 bits allowed for 128 unique values—enough for the English alphabet, digits, punctuation, and teletype commands—while leaving the 8th bit for "parity checking" to detect transmission errors. Even today, the first 128 characters of Unicode (UTF-8) are identical to this original 1960s standard.