SRT for broad compatibility
Numbered cues and simple timestamps work with many desktop players and editing tools. Use VTT to SRT for a focused web-caption conversion.
Subtitle Converter
One file, the format you need. Convert subtitle text and timing on your device, then preview the result before downloading.
Files stay in your browser. Nothing is uploaded.No account. No installation.
Choose an output for your workflow
VTT for web video
WebVTT supplies the structure expected by HTML caption tracks. Use SRT to VTT when you already have a SubRip file.
SBV for a plain text workflow
Start and end timestamps share a line, followed by caption text. Styling is removed. Check that your destination platform accepts SBV before converting.
Input formats and their limits
SRTSubRip
Plain, timed captions supported by most video players.
UTF-8 textVTTWebVTT
Captions with web-specific settings for HTML video.
UTF-8 textASSAdvanced SubStation Alpha
Styled dialogue, often used for animation and typesetting.
UTF-8 textSSASubStation Alpha
An earlier styled subtitle format used in desktop workflows.
UTF-8 textSBVSubViewer
Simple timestamped captions used in video-platform workflows.
UTF-8 textSUBMicroDVD (text)
Frame-based captions. A frame rate is required; binary VobSub is unsupported.
UTF-8 textFrequently Asked Questions
Which input and output formats are supported?
The converter reads UTF-8 SRT, VTT, ASS, SSA, SBV and text-based MicroDVD SUB files. It can export SRT, VTT or SBV, or keep the original file format. It does not create new ASS style scripts or binary subtitle images.
Why does a SUB file ask for a frame rate?
MicroDVD stores cue positions as frame numbers. A frame rate is needed to convert those numbers into seconds accurately. The converter uses an embedded frame-rate header when present; otherwise enter the source video’s actual FPS before uploading the file. It does not guess a rate.
Can I convert IDX and binary SUB files?
No. VobSub uses subtitle images rather than editable text and commonly comes as an IDX/SUB pair. Those images need optical character recognition before text conversion is possible. This tool accepts only the text-based MicroDVD variant of the SUB extension.
Does conversion send my file to a server?
No. This converter reads and rewrites your subtitle file within your browser. The file is not sent to a translation provider or stored in a database. Download your converted result before you close or reload the tab, because the working copy exists only in memory.
Conversion is different from translation
Changing formats leaves the language unchanged. Use the subtitle translation tool to translate dialogue, or the subtitle editor to fix wording and timing. Keep the source file when you need to retain styles that another format does not support.