TXT to SRT converter

Turn plain text into a real subtitle file

A .txt file has words but no timing; an SRT file is words plus timing. This tool bridges that gap: it splits your text into subtitle-sized pieces, gives every piece a start and end time based on how long it takes to read, and writes a perfectly valid, sequentially numbered SRT (or WebVTT) file. What used to mean typing timestamps by hand in a text editor takes one click.

It is the quickest way to bootstrap subtitles from a transcript you already have — an interview transcription, a video script, a speech, translated dialogue or song lyrics. The result loads into any player, video editor or caption workflow that accepts SRT, and into YouTube as a caption upload.

How the timing is calculated

Each subtitle's duration comes from its length and your chosen reading speed, measured in characters per second (CPS). The industry rule of thumb is that comfortable subtitles sit around 15–17 CPS — professional guidelines like Netflix's cap adult subtitles at 17. Long lines are wrapped at 42 characters and split so no subtitle exceeds two lines, every cue lasts at least one second, and a short gap is left between cues so players render them cleanly.

The result reads naturally, but it is an estimate — the tool cannot know where the pauses in your video fall. Two ways to line it up: set First subtitle at to the moment speech actually starts, then fine-tune individual cues in the subtitle editor; or, if the pacing drifts against the video, stretch the whole track by matching the first and last lines in the sync tools.

Lines or sentences?

• Line breaks — each line of your text becomes one subtitle. Use this when the text is already broken up the way you want it shown: lyrics, poetry, a formatted script.
• Sentences — the tool splits flowing paragraphs at sentence boundaries. Use this for prose: transcripts, articles, essays, anything written in paragraphs.

Is my text uploaded anywhere?

No. The file is generated entirely in your browser with JavaScript. Nothing you paste or drop here is sent to a server, and there is no sign-up or usage limit.