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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.

100% Free
No Registration
Secure & Private

Convert Your Subtitle Files

Upload any subtitle file and convert to your desired format

Daily Limit: /10 Credits

Register for free to get 600 credits monthly

Per File

100 MB

Total Queue

0 B / 500 MB

Daily usage: 0/10 credits0%
🔒Secure & Private
Lightning Fast
🎯High Quality

Complete Format Support

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

Input Formats

8 public input formats

Output Formats

3 public output formats

Public Input FormatProven Output Route

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:

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

Professional-grade conversion with these powerful features

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 Subtitle Converter

The FreeFast Subtitle Converter is your complete solution for converting subtitle files between different formats. Whether you need to convert for compatibility, optimization, or professional requirements, our tool handles it all with exceptional quality and speed.

Supported Formats

We support a comprehensive range of subtitle formats including SRT, VTT, ASS, SSA, SBV and 4 more formats. Each format is fully supported for both input and output conversions.

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, Security & Sandbox File Deletion Policy

Your security and privacy are our absolute priority. We employ advanced enterprise-grade protocols to protect your files at every stage of their lifecycle.

🔒

256-bit SSL Encryption

All data in transit is shielded using advanced HTTPS encryption, making it impossible to intercept.

Zero Persistence Sandbox

Files are processed fully in isolated memory and are never cached, archived, or cataloged on disk permanently.

⏱️

Strict 24h Auto-Purge

Every single uploaded and converted file is permanently purged from our servers within 24 hours.

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 converting for free right now. No registration required.