UTF8 Converter

UTF8 Converter - Convert UTF8 to Multiple Formats Online

The UTF8 Converter is a comprehensive online tool that converts UTF-8 encoded text to multiple formats including hexadecimal, decimal, binary, octal, and Base64, and vice versa. This versatile tool is essential for developers, system administrators, and anyone working with text encoding, data processing, debugging, and format conversions.

What is this tool for?

Our UTF8 Converter tool is perfect for developers, system administrators, and anyone working with text encoding and format conversions. Whether you're converting UTF-8 text to hex for debugging, encoding text to Base64 for transmission, converting to binary for analysis, or decoding various formats back to UTF-8, this tool simplifies the conversion process.

Common use cases include:

• Converting UTF-8 text to hexadecimal, decimal, binary, octal, or Base64 formats
• Decoding hexadecimal, decimal, binary, octal, or Base64 strings back to UTF-8 text
• Debugging encoding and character representation issues
• Processing data in different numeric formats
• Converting text to Base64 for API transmission or storage
• Analyzing text at the byte level in different number systems
• Working with binary data and hex dumps

How to Use the Tool

1. Select Conversion Mode: Choose between "UTF-8 → Format" (encode) or "Format → UTF-8" (decode) using the dropdown.
2. Select Output Format: Choose the target format (Hexadecimal, Decimal, Binary, Octal, or Base64).
3. Enter Input:
   • For UTF-8 to Format: Paste or type your UTF-8 text
   • For Format to UTF-8: Paste your formatted string (hex, decimal, binary, octal, or Base64)
4. Upload File (Optional): Use the file upload button to load data from a file.
5. View Output: The converted output appears automatically in real-time.
6. Swap Input/Output: Use the swap button to reverse the conversion direction.
7. Copy or Download: Use the copy button to copy the result, or download it as a file.

Understanding UTF-8 and Format Conversions

What is UTF-8?

UTF-8 (Unicode Transformation Format - 8-bit): A variable-width character encoding that can represent any Unicode character. UTF-8 uses 1 to 4 bytes per character, making it efficient for ASCII characters (1 byte) while supporting all Unicode characters including emojis and international characters.

Supported Formats

• Hexadecimal (Hex): Base-16 numbering system using digits 0-9 and letters A-F. Each byte is represented by two hex digits (e.g., 48 65 6C 6C 6F for "Hello").
• Decimal: Base-10 numbering system. Each byte is represented as a decimal number (e.g., 72 101 108 108 111 for "Hello").
• Binary: Base-2 numbering system using only 0s and 1s. Each byte is represented as 8 bits (e.g., 01001000 01100101 for "He").
• Octal: Base-8 numbering system using digits 0-7. Each byte is represented as an octal number (e.g., 110 145 154 154 157 for "Hello").
• Base64: A binary-to-text encoding scheme that represents binary data in ASCII string format (e.g., SGVsbG8= for "Hello").

Examples

UTF-8 to Hexadecimal

Input (UTF-8):

Hello World! 🌟

Output (Hexadecimal):

48 65 6C 6C 6F 20 57 6F 72 6C 64 21 20 F0 9F 8C 9F

UTF-8 to Decimal

Input (UTF-8):

Hello

Output (Decimal):

72 101 108 108 111

UTF-8 to Binary

Input (UTF-8):

Hi

Output (Binary):

01001000 01101001

UTF-8 to Octal

Input (UTF-8):

Hello

Output (Octal):

110 145 154 154 157

UTF-8 to Base64

Input (UTF-8):

Hello World!

Output (Base64):

SGVsbG8gV29ybGQh

Hexadecimal to UTF-8

Input (Hexadecimal):

48656C6C6F20576F726C6421

Output (UTF-8):

Hello World!

Base64 to UTF-8

Input (Base64):

SGVsbG8gV29ybGQh

Output (UTF-8):

Hello World!

Features

• Multiple Format Support: Convert UTF-8 to/from hexadecimal, decimal, binary, octal, and Base64
• Bidirectional Conversion: Convert in both directions (UTF-8 to format and format to UTF-8)
• Real-time Conversion: Automatic conversion as you type or paste
• UTF-8 Support: Properly handles multi-byte UTF-8 characters including emojis and international characters
• Format Validation: Validates input format before conversion with clear error messages
• Flexible Input: Accepts various input formats (with/without spaces, prefixes, etc.)
• File Upload Support: Upload files directly for conversion
• Swap Functionality: Easily swap between input and output
• Copy & Download: Easily copy or download converted data
• Privacy-focused: All conversions happen locally in your browser

Use Cases

• Debugging: Decode various formats to understand their UTF-8 content
• Data Processing: Convert between UTF-8 and different numeric formats in data pipelines
• API Integration: Process Base64-encoded or hex-encoded data from APIs
• Binary Analysis: Analyze text at the byte level in different number systems
• Encoding Conversion: Convert text to different formats for storage or transmission
• Memory Analysis: Convert hex dumps or binary data to readable text
• Security: Encode/decode data for security applications

Technical Details

• UTF-8 Encoding: Uses JavaScript's TextEncoder/TextDecoder for proper UTF-8 handling
• Multi-byte Characters: Correctly handles UTF-8 characters that require multiple bytes (emojis, Chinese, etc.)
• Format Validation: Validates input format before conversion (hex length, binary format, etc.)
• Base64 Encoding: Uses standard Base64 encoding/decoding for text data
• Number Systems: Properly converts between different number bases (2, 8, 10, 16)
• Error Handling: Provides clear error messages for invalid input
• Whitespace Handling: Automatically handles spaces and formatting in input

Format-Specific Notes

Hexadecimal

• Accepts hex strings with or without spaces
• Automatically removes "0x" prefixes
• Must have even length (each byte = 2 hex digits)
• Case-insensitive (accepts both uppercase and lowercase)

Decimal

• Accepts space-separated decimal values
• Each value must be between 0 and 255 (valid byte range)
• Automatically handles multiple spaces

Binary

• Accepts space-separated binary values
• Each value must be exactly 8 bits (0s and 1s)
• Validates binary format before conversion

Octal

• Accepts space-separated octal values
• Each value must be between 0 and 377 (octal for 255)
• Uses digits 0-7 only

Base64

• Accepts standard Base64 encoded strings
• Handles padding characters (=)
• Validates Base64 format before decoding