CaptionStack
Private by design

CSV CONVERTER

CSV files.
Any format.

Convert .csv captions to SRT, VTT, TTML, and more — or convert anything to .csv. Free, private, and in your browser.

SRTVTTSBVLRCTTMLJSONCSVTXT
1

Choose your caption file

We’ll detect the format automatically. Drop several files to convert them all at once.

Don’t have a file handy?
2

Choose an output format

Select what you need on the other side.

100% privateYour files never leave this device.
8 formatsBuilt for the caption formats you use.
No limitsConvert as often as you need.

About CSV (.csv) files

A CSV export opens directly in Excel, Google Sheets, or Numbers, which makes it the most practical way to proofread captions, hand them to a translator, or run find-and-replace across hundreds of cues. CaptionStack reads any CSV with start, end, and text columns and writes id,start,end,text with proper quoting.

Where .csv is used

  • Excel, Google Sheets, and Numbers
  • Translation and localization handoffs
  • QA and review spreadsheets

What a .csv file looks like

id,start,end,text
1,00:00:01.000,00:00:04.200,"Caption files, meet your new converter."

What converts and what doesn’t

Timing, text, and identifiers round-trip. Line breaks inside a cue are preserved inside quoted cells.

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All caption formats