ASCII Table

Interactive reference for all 128 ASCII characters. Search, filter by category, and click any row for details.

Description

Uppercase A

Decimal

Hexadecimal

0x41

Octal

101

Binary

1000001

HTML Entity

CSS / JS Escape

\x41

How It Works

ASCII (American Standard Code for Information Interchange) is a character encoding standard that assigns numeric values to 128 characters, including letters, digits, punctuation marks, and control characters. Each character is represented by a 7-bit binary number (0–127).

Character Ranges

0–31: Control characters (non-printable)
32–47: Punctuation and symbols
48–57: Digits 0–9
58–64: More punctuation
65–90: Uppercase letters A–Z
91–96: Brackets, backslash, etc.
97–122: Lowercase letters a–z
123–126: Braces, pipe, tilde
127: DEL (delete)

Common Uses

Converting between characters and their numeric codes in programming
Understanding binary data and file formats
Debugging encoding issues in text processing
Working with serial communication protocols
HTML entity encoding for special characters

Related Utils

API Response Number Base Cron Expression CSS Beautifier

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