CSV to SRT Converter

What is the CSV to SRT Converter?

The CSV to SRT Converter is a free online tool that transforms structured CSV subtitle data into the universally compatible SRT (SubRip Subtitle) format. Whether you are a video editor, content creator, YouTuber, or subtitle translator, this tool streamlines your workflow by instantly converting your spreadsheet data into ready-to-use subtitle files.

SRT is the most widely supported subtitle format, compatible with VLC, YouTube, Vimeo, Adobe Premiere Pro, DaVinci Resolve, and virtually every video platform. By converting CSV to SRT, you can edit large subtitle lists in spreadsheet software like Excel or Google Sheets and then generate the final SRT file with a single click.

Required CSV Format

Your CSV data must include three essential columns: start, end, and text. The first row should contain these column headers. The tool automatically detects decimal seconds (e.g., 1.5) and SRT format timestamps (e.g., 00:00:01,500).

Supported Time Formats

Decimal seconds: 0.5, 1.25, 125.750
SRT format: 00:00:01,500, 00:01:30,000
Colon-separated: 0:01:30, 1:25:00

Key Features

Automatic time format detection — mix decimal seconds and HH:MM:SS in the same file.
Smart merging of consecutive empty subtitle rows for cleaner output.
One-click download of the generated SRT file, ready for use.
All processing is client-side in your browser — no data uploaded to servers.

How to Use This Tool

Prepare your CSV data with start, end, and text columns.
Paste your CSV data into the input area or use the Load Example button to see the expected format.
The SRT output updates automatically as you type — no button clicks needed.
Use the Copy or Download buttons to save your subtitle file.

For more conversion tools, check out the CSV to Excel Converter, SRT to CSV, SRT to Text, and SRT to VTT.

Frequently Asked Questions

What is an SRT file?

SRT (SubRip Subtitle) is the most widely used subtitle format. It contains subtitle entries with sequential numbers, timestamps in HH:MM:SS,ms format, and the subtitle text. SRT files are compatible with most video players including VLC, Windows Media Player, and streaming platforms.

What CSV format does this tool require?

Your CSV must have three columns: start (start time), end (end time), and text (subtitle content). Times can be in seconds (e.g., 1.5) or SRT format (00:00:01,500). The first row should contain column headers.

How are time values converted to SRT format?

The tool automatically detects your time format. Decimal seconds (like 3.5) are converted to SRT format (00:00:03,500). If your times are already in HH:MM:SS format, they are preserved. Milliseconds are padded to 3 digits.

What happens to empty subtitle rows?

Consecutive rows with empty text are automatically merged. The tool extends the end time of the previous subtitle to cover the empty row's duration, reducing clutter in the final SRT file.

Can I use this tool for YouTube captions?

Yes. Export your caption data as CSV with start, end, and text columns, then convert to SRT. YouTube accepts SRT files for manual caption upload, making this tool perfect for preparing professional subtitles.

Is there a limit to the CSV file size?

The tool can handle CSV data with thousands of subtitle entries. For very large files, processing may take a few moments. All processing happens in your browser for privacy.

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