Does YouTube accept SRT or SBV for caption upload?

YouTube accepts both SRT and SBV (as well as VTT, SCC, and TTML) for caption uploads in YouTube Studio. You do not necessarily need to convert SRT to SBV before uploading — SRT will work. SBV is the format YouTube uses when exporting captions.

Is the conversion lossless?

Yes. The tool only changes the timestamp format and removes block numbers. All subtitle text and timing is preserved exactly.

Can I convert VTT to SBV?

This tool converts SRT to SBV. To convert VTT to SBV: first use our VTT to SRT converter, then convert the resulting SRT to SBV here.

Does my file get uploaded to any server?

No. The entire conversion runs in JavaScript in your browser. Your file never leaves your device.

Will the converted SBV work in YouTube Studio?

Yes. The output uses YouTube's native SBV format. Upload via YouTube Studio → Subtitles → Add Language → Upload File.

Free Subtitle Tools

SRT to SBV Converter — Free Online

Convert SRT subtitle files to YouTube SBV format instantly. Paste your SRT or upload a file — no account required, nothing uploaded to any server.

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Click to upload .srt file

or paste SRT below

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When do you need SRT to SBV?

SBV is the native subtitle format used by YouTube's caption system. If you have an SRT file and want to upload it directly to YouTube Studio as a caption track, YouTube accepts SRT — but if you need to edit the captions in YouTube's native format, or if you're working with tools that specifically output SBV, you may need to convert back. The most common use case is round-trip editing: download SBV from YouTube, convert to SRT to edit in a subtitle editor or translate with an AI tool, then convert back to SBV to upload the edited version.

SBV vs SRT: key differences

SRT uses commas to separate milliseconds (00:00:01,000) and numbers each subtitle block (1, 2, 3…). SBV uses dots (0:00:01.000) and omits block numbers entirely. YouTube's upload system accepts both SRT and SBV, but SBV is YouTube's own format. The content — subtitle text and timing — is identical between the two formats.

How to convert SRT to SBV

1
Upload or paste your SRT file
Click the upload zone to select a .srt file, or paste the raw SRT content into the text box.
2
Click Convert SRT → SBV
The tool parses all SRT cues, strips block numbers, and converts timestamps to YouTube's SBV format (dots, no leading zero on hours).
3
Download or copy the SBV output
Click "Download .sbv file" to save the result, ready to upload to YouTube Studio or any SBV-compatible tool.

Frequently Asked Questions

Does YouTube accept SRT or SBV for caption upload?: YouTube accepts both SRT and SBV (as well as VTT, SCC, and TTML) for caption uploads in YouTube Studio. You do not necessarily need to convert SRT to SBV before uploading — SRT will work. SBV is the format YouTube uses when exporting captions.
Is the conversion lossless?: Yes. The tool only changes the timestamp format and removes block numbers. All subtitle text and timing is preserved exactly.
Can I convert VTT to SBV?: This tool converts SRT to SBV. To convert VTT to SBV: first use our VTT to SRT converter, then convert the resulting SRT to SBV here.
Does my file get uploaded to any server?: No. The entire conversion runs in JavaScript in your browser. Your file never leaves your device.
Will the converted SBV work in YouTube Studio?: Yes. The output uses YouTube's native SBV format. Upload via YouTube Studio → Subtitles → Add Language → Upload File.