Are my SBV files uploaded anywhere?

No. This conversion runs entirely inside your browser, so the file never leaves your device. You can confirm it yourself: open the network tab of your browser's developer tools and watch that nothing is sent while the file converts.

Is converting SBV to SUB free?

Yes, without a limit on how many files you convert and with no watermark on the result. Files up to 100 MB are covered by the free plan.

Does converting SBV to SUB lose quality?

No. SUB stores the same content without discarding anything, so the result is identical in quality to the original.

Do I need to install anything to open SUB files?

No installation is needed for the conversion itself — it runs in the browser you already have. Opening the SUB afterwards needs whatever software normally handles MicroDVD Subtitle on your device.

SBVtoSUB

Convert SBV to SUB

Up to 3 files at once, 100 with Pro. Mixed formats are fine.

You can convert SBV to SUB free and without an account: drop the file above and the SUB is ready to download in a second or two. The conversion happens inside your own browser, so the file is never uploaded — it works on Windows, Mac, Linux, iPhone and Android, and keeps working with the network switched off.

What SBV and SUB are for

YouTube's own caption format from its export tool.

Frame-based subtitles. Goes out of sync the moment the frame rate changes.

How to convert SBV to SUB

Drop your SBV file onto this page, or click to pick one.
Choose SUB as the target. The conversion runs inside your browser — the file is never uploaded.
Download the finished SUB file.

SBV vs SUB: what changes

SBV compared with SUB
	SBV	SUB
Full name	YouTube Subtitle	MicroDVD Subtitle
File extension	.sbv	.sub
Media type	text/plain	text/plain

Quality: Nothing is lost. The result holds exactly the same picture, text or data as the original.
Where it runs: This conversion runs inside your browser. Your file is never uploaded, and it works with the network disconnected.

SBV to SUB: common questions

Are my SBV files uploaded anywhere?: No. This conversion runs entirely inside your browser, so the file never leaves your device. You can confirm it yourself: open the network tab of your browser's developer tools and watch that nothing is sent while the file converts.
Is converting SBV to SUB free?: Yes, without a limit on how many files you convert and with no watermark on the result. Files up to 100 MB are covered by the free plan.
Does converting SBV to SUB lose quality?: No. SUB stores the same content without discarding anything, so the result is identical in quality to the original.
Do I need to install anything to open SUB files?: No installation is needed for the conversion itself — it runs in the browser you already have. Opening the SUB afterwards needs whatever software normally handles MicroDVD Subtitle on your device.