Convert to UTF-8

Convert text files from any encoding to UTF-8 for maximum compatibility

Supports: .srt, .vtt, .ass, .ssa, .txt, .sub, .smiMax 20 filesFree Online Tool
Tool Options

This tool automatically detects the current encoding of your files and converts them to UTF-8. It supports a wide range of encodings including GBK, Big5, Shift-JIS, ISO-8859-1, and more.

Select your files
Why Convert to UTF-8?

Universal Compatibility

UTF-8 is the most widely supported text encoding, ensuring your subtitle files work across all platforms, devices, and media players.

Character Support

UTF-8 can represent any character in the Unicode standard, making it perfect for multilingual subtitles and special characters.

Automatic Detection

Our tool automatically detects the current encoding of your files and converts them safely to UTF-8 without losing any content.

Supported Encodings

Western

  • ISO-8859-1
  • Windows-1252
  • ASCII

Chinese

  • GBK
  • GB2312
  • Big5

Japanese

  • Shift-JIS
  • EUC-JP
  • ISO-2022-JP

Korean

  • EUC-KR
  • CP949

Cyrillic

  • Windows-1251
  • KOI8-R
  • ISO-8859-5

And many more...

Automatic detection supports dozens of additional encodings

Why Choose Our Convert to UTF-8?
  • Free and Online: No software installation required
  • Fast Processing: Quick conversion and processing
  • Multiple Formats: Support for .srt, .vtt, .ass, .ssa, .txt, .sub, .smi files
  • Batch Processing: Handle up to 20 files at once
  • Privacy Focused: Your files are processed securely
  • No Registration: Start using immediately
How to Use Convert to UTF-8
  1. Upload your subtitle files by dragging and dropping or clicking "Choose Files"
  2. Configure any tool-specific options if available
  3. Click "Process Files" to start the conversion
  4. Download your processed files when ready

The tool supports files up to 50MB for image-based subtitles (.sup, .sub, .idx) and 5MB for text-based formats. Processing usually takes just a few seconds depending on file size and complexity.