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Subtitle Converter

Convert subtitle and caption files between proven formats. Timing is preserved for SRT and VTT outputs, and plain TXT exports create readable transcript text.

Start ConvertingView All Formats
✓10 free daily conversions
✓No signup to start
✓No watermarks

Convert Your Subtitle Files

Upload a subtitle file, choose an output format, and download the converted result

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Supported Subtitle Formats

Click on any format to see all available conversion options

SRT
SRT Converter
VTT
VTT Converter
ASS
ASS Converter
SSA
SSA Converter
SBV
SBV Converter
SUB
SUB Converter
LRC
LRC Converter
STL
STL Converter

Complete Format Support

We publicly expose 22 proven routes across 8 input formats and 3 output formats

Input Formats

8 public input formats

srtvttassssasbvsublrcstl

Output Formats

3 public output formats

srtvtttxt
Public Input FormatProven Output Route

Popular Conversions

Quick access to the 12 most commonly used conversions

PopularsrtvttPopularvttsrtPopularsrttxtPopularasssrtPopularssavttPopularsbvsrtPopularsubsrtPopularlrctxtPopularstlsrt

All Format Conversions

Click on any format tab to see all available conversions from and to that format

SRT Conversions

2 output formats available

SRT Converter

Convert SRT to:

Convert SRT to VTTConvert SRT to TXT
8 Public Input Formats22 Public RoutesCapability-Gated Links

How to Convert Subtitle Files

Follow these simple steps to convert your files

Upload Your File

Drag and drop your file or click to browse. We support over 300 file formats. 💡 Pro Tip: You can drag and drop multiple files at once!

Choose Output Format

Select your desired output format from our comprehensive list of options.

Convert Instantly

Our powerful servers process your file in seconds with high quality results.

Download Result

Download your converted file immediately. Files are kept for 24 hours.

Subtitle Converter Features

Practical browser-based conversion features for everyday file jobs

⚡

Convert SRT and

Convert SRT and VTT captions

🔒

Convert ASS, SSA,

Convert ASS, SSA, SBV, SUB, LRC and text STL inputs

✨

Preserve timing where

Preserve timing where the output format supports timing

🌍

Preserve Unicode caption

Preserve Unicode caption text

💾

Create plain transcript

Create plain transcript TXT output

📱

Reject malformed subtitle

Reject malformed subtitle timestamps clearly

About the subtitle converter

The FreeFast Subtitle Converter helps you change subtitlefiles from your browser without installing extra software. Use it for compatibility, sharing, uploading, editing, or preparing a file for another app.

Supported Formats

We support a comprehensive range of subtitle formats including SRT, VTT, ASS, SSA, SBV and 3 more proof-backed input formats. Public conversion links are shown only after a route has a verified or supported capability status.

Why Use Our Subtitle Converter?

  • Convert SRT: Convert SRT and VTT captions
  • Convert ASS,: Convert ASS, SSA, SBV, SUB, LRC and text STL inputs
  • Preserve timing: Preserve timing where the output format supports timing
  • Preserve Unicode: Preserve Unicode caption text
  • Create plain: Create plain transcript TXT output
  • Reject malformed: Reject malformed subtitle timestamps clearly

Popular Subtitle Conversions

Some of our most popular subtitle conversions include:

How It Works

Converting your subtitle files is simple:

  1. Upload: Drag and drop your subtitle file or click to browse
  2. Select Format: Choose your desired output format from the dropdown
  3. Convert: Click convert and wait a few seconds
  4. Download: Download your converted file instantly

Privacy-friendly file handling

Your file is handled for the conversion you request. Uploads and downloads use encrypted transfer, and temporary files are cleared after the processing and deletion window.

🔒

Encrypted transfer

Uploads and downloads use HTTPS/TLS while your file moves between your browser and FreeFast.

⚡

Conversion-only handling

Files are handled for the selected conversion job, not for selling your file contents.

⏱️

Auto-delete window

Temporary uploads and converted files are cleared after the processing and deletion window.

Subtitle Converter FAQ

Common questions about our converter

The proven subtitle converter supports SRT, VTT, ASS, SSA, SBV, SUB, LRC and text STL inputs with SRT, VTT and TXT outputs.
Timing is preserved when converting to SRT or VTT. TXT output intentionally exports readable transcript text without timing.
Yes. The converter proof includes Unicode captions and validates that caption text remains readable after conversion.

Ready to Convert Your Subtitle Files?

Start with 10 free daily conversions. No signup required for your first file jobs.

Start Converting