Free Online Subtitle Converter
Convert subtitle files between all major formats. SRT to VTT, ASS to SRT, SUB to VTT converter. Free, fast, and preserves timing and formatting.
Convert Subtitle
Upload your subtitle file and select the target format
Drag & Drop your subtitle file
Support for SRT, VTT, SUB, SBV, ASS, and STL formats up to 5MB
How to Use the Subtitle Converter
📁 Upload Your File
Drag and drop your subtitle file or click to browse. Supports SRT, VTT, ASS, SUB, SBV, and STL formats.
🎯 Select Target Format
Choose your desired output format from the dropdown menu. All major subtitle formats are supported.
🔄 Convert File
Click the Convert button to process your file. Timing and formatting are preserved automatically.
💾 Download Results
Preview the converted content and download your file in the new format instantly.
Supported Format Conversions
SRT Conversions
- • SRT to VTT (WebVTT)
- • SRT to ASS (Advanced SubStation)
- • SRT to SUB (MicroDVD)
- • SRT to SBV (YouTube)
- • SRT to STL (Broadcast)
VTT Conversions
- • VTT to SRT (SubRip)
- • VTT to ASS (Advanced SubStation)
- • VTT to SUB (MicroDVD)
- • VTT to SBV (YouTube)
- • VTT to STL (Broadcast)
ASS Conversions
- • ASS to SRT (SubRip)
- • ASS to VTT (WebVTT)
- • ASS to SUB (MicroDVD)
- • ASS to SBV (YouTube)
- • ASS to STL (Broadcast)
SUB Conversions
- • SUB to SRT (SubRip)
- • SUB to VTT (WebVTT)
- • SUB to ASS (Advanced SubStation)
- • SUB to SBV (YouTube)
- • SUB to STL (Broadcast)
SBV Conversions
- • SBV to SRT (SubRip)
- • SBV to VTT (WebVTT)
- • SBV to ASS (Advanced SubStation)
- • SBV to SUB (MicroDVD)
- • SBV to STL (Broadcast)
STL Conversions
- • STL to SRT (SubRip)
- • STL to VTT (WebVTT)
- • STL to ASS (Advanced SubStation)
- • STL to SUB (MicroDVD)
- • STL to SBV (YouTube)
Subtitle Format Information
📄 SRT (SubRip)
Most widely supported subtitle format. Simple text-based format with timing information.
🌐 VTT (WebVTT)
Web-based subtitle format with styling support. Used for HTML5 video players.
🎨 ASS (Advanced SubStation)
Advanced format with rich formatting, positioning, and styling capabilities.
🎬 SUB (MicroDVD)
Frame-based timing format. Uses frame numbers instead of timestamps.
📺 SBV (YouTube)
YouTube's subtitle format. Simple timing with comma separators.
📻 STL (Broadcast)
Broadcast television subtitle format. Professional broadcasting standard.
Frequently Asked Questions
What subtitle formats can I convert between?
Our converter supports all major subtitle formats including SRT (SubRip), VTT (WebVTT), ASS (Advanced SubStation Alpha), SUB (MicroDVD), SBV (YouTube), and STL (Broadcast). You can convert between any of these formats freely.
Does the converter preserve subtitle timing?
Yes, our converter preserves all timing information when converting between formats. Start times, end times, and duration are maintained accurately. Some formats may have slight precision differences, but timing remains functionally identical.
Can I convert SRT to VTT format?
Yes, SRT to VTT conversion is one of our most popular features. Simply upload your SRT file, select VTT as the target format, and download the converted WebVTT file. This is perfect for web-based video players that require VTT format.
What happens to formatting when converting?
Basic formatting like bold, italic, and underline is preserved when possible. Advanced formatting (like ASS styling) may be simplified when converting to simpler formats like SRT. For complex formatting, consider using our Subtitle Editor.
Is there a file size limit for conversion?
No, there are no file size limits for subtitle conversion. Whether you're converting a short clip or a full-length movie subtitle file, our converter can handle files of any size. Processing time may vary based on file size and complexity.
Are my subtitle files stored on your servers?
No, your privacy is our priority. All conversion happens locally in your browser. Your subtitle files are never uploaded to our servers and are automatically deleted from memory after processing.