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

The converter auto-detects encodings such as GBK, Big5, Shift-JIS, ISO-8859-1, and more, then rewrites the file in UTF-8 without breaking characters.

Select your files
Why convert to UTF-8

UTF-8 is the safest choice for subtitles and transcripts.

Conversion helps with:

  • Universal compatibility across players, operating systems, and editors
  • Full Unicode coverage for multilingual dialogue and special characters
  • Automatic detection that prevents garbled text when opening files
Supported encodings

The converter detects dozens of encodings automatically, including common sets such as:

  • 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
  • Plus many more regional encodings with fallback detection
Processing notes

Files keep their structure and formatting while the underlying text gets re-encoded. Convert up to twenty files at once for quick clean-up.

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.

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