ASCII Converter - Online Character & ASCII Code Bidirectional Conversion Tool

Free online ASCII conversion tool, supports character to ASCII and ASCII to character conversion, provides complete ASCII code table (0-127)

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Hexadecimal
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Binary
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Octal
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ASCII Code Table (0-127)

Decimal Hexadecimal Octal Binary Character Description

Features

Character to ASCII

Convert Chinese, English, numbers, and symbols to ASCII code values with real-time results

ASCII to Character

Enter decimal, hexadecimal, or binary ASCII codes to quickly convert to corresponding characters

Complete ASCII Table

Provides 0-127 standard ASCII code table, including control characters and printable characters

Multiple Base Support

Simultaneously display decimal, hexadecimal, binary, and octal ASCII code values

Batch Conversion

Support long text batch conversion, get ASCII codes for all characters with one click

Local Processing

Data processed locally only, protecting user privacy and security, no server upload required

How to Use ASCII Converter

1

Select Conversion Mode

Click "Character to ASCII" or "ASCII to Character" tab to select the conversion direction you need.

2

Enter Content

Enter the characters or ASCII code values to convert in the input box. Supports mixed Chinese and English, long text, and multi-line text.

3

View Conversion Results

The system automatically generates conversion results in four formats: decimal, hexadecimal, binary, and octal simultaneously.

4

Copy Results

Click the "Copy" button in each result area to individually copy the conversion result in the corresponding format.

Use Cases

Programming Development

Programmers need to look up ASCII code values of characters when writing code for character processing and encoding conversion.

Network Communication

Analyze ASCII-encoded content in network protocol data packets and debug communication programs.

Data Processing

View hexadecimal ASCII representation of characters when processing text files for data parsing.

Learning and Teaching

Computer science students learn character encoding and ASCII standards to understand computer fundamentals.

Embedded Development

Character encoding conversion and serial communication debugging in microcontroller and IoT device development.

Cryptography

Analyze encoding and encryption-related character conversions for security research and learning.

Frequently Asked Questions

Q: What is ASCII code?
A: ASCII (American Standard Code for Information Interchange) is a character encoding system based on the Latin alphabet, mainly used for displaying modern English and other Western European languages. Standard ASCII uses 7-bit binary numbers to represent 128 characters (0-127).
Q: What is the difference between ASCII and Unicode?
A: ASCII contains only 128 characters, mainly used to represent English letters, numbers, and common symbols. Unicode is a broader character encoding standard that can represent almost all writing characters in the world. This tool automatically displays Unicode encoding values for non-ASCII characters.
Q: How do I convert characters to ASCII code?
A: Enter any character in the input box of this tool, and the system will automatically display the decimal, hexadecimal, binary, and octal ASCII code values of the character. Supports single character and string batch conversion.
Q: What does the ASCII code table include?
A: The standard ASCII code table includes 128 characters (0-127), divided into control characters (0-31 and 127) and printable characters (32-126). Printable characters include English letters (uppercase and lowercase), numbers 0-9, punctuation marks, and special symbols.
Q: Does it support Chinese conversion?
A: Yes. Chinese characters exceed the ASCII range (0-127), and the tool will automatically display their Unicode encoding values (usually 4-digit hexadecimal numbers), making it convenient for developers to view the encoding information of Chinese characters.
Q: How to convert hexadecimal ASCII code to characters?
A: In ASCII to Character mode, enter a hexadecimal value (such as 41, 0x41, or just 41), and the system will automatically convert it to the corresponding character (such as 'A'). Supports multiple input formats: decimal, hexadecimal, binary, and octal.

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