UTF-16 to UTF-8 Converter - Convert UTF-16 to UTF-8 Online

What is UTF-16 to UTF-8 Converter?

Convert UTF-16 encoded data to UTF-8 format instantly with our free online converter. This tool takes UTF-16 hexadecimal input and transforms it into UTF-8 encoding. It automatically detects the byte order mark (BOM) to determine endianness (Little Endian or Big Endian) or lets you specify it manually.

How to Use This Tool

Enter UTF-16 hex bytes separated by spaces in the input field. The converter automatically processes your input and displays the UTF-8 hex output in real-time. You can choose between auto-detection of endianness or manually select Little Endian (LE) or Big Endian (BE). Click "Use output as input" to swap the result back for reverse conversion.

Understanding UTF-16 and UTF-8

UTF-16 (16-bit Unicode Transformation Format) encodes Unicode characters using either two or four bytes per character. It's commonly used in Windows systems, Java, and JavaScript. UTF-8 (8-bit Unicode Transformation Format) uses one to four bytes per character and is the dominant encoding on the web. Converting between these formats is essential when working with data from different systems.

Common Use Cases

Converting Windows system data (UTF-16) to web-compatible UTF-8 format
Processing Java/JavaScript string data exported as UTF-16 hex
Migrating databases from UTF-16 to UTF-8 encoding
Debugging character encoding issues in cross-platform applications

Frequently Asked Questions

What is a BOM (Byte Order Mark)?

A Byte Order Mark (BOM) is a special Unicode character (U+FEFF) placed at the beginning of text to indicate endianness. In UTF-16, FE FF means Big Endian and FF FE means Little Endian. Our tool automatically detects the BOM to determine the correct endianness.

What is the difference between UTF-16 LE and UTF-16 BE?

UTF-16 Little Endian (LE) stores the least significant byte first, while UTF-16 Big Endian (BE) stores the most significant byte first. For example, the character 'A' (U+0041) is stored as 41 00 in LE and 00 41 in BE.

Which encoding should I use: UTF-8 or UTF-16?

UTF-8 is more space-efficient for ASCII text and is the standard for web content. UTF-16 is more efficient for text with many non-ASCII characters (like Chinese, Japanese, or Korean) and is commonly used in Windows and Java environments. The choice depends on your specific use case and platform requirements.

Can this tool convert UTF-8 back to UTF-16?

Yes, you can click the "Use output as input" button to swap the UTF-8 hex output into the input field. However, for a dedicated reverse conversion, use our dedicated Convert UTF-8 to UTF-16 tool.