Text to SRT Converter

Convert text to SRT subtitles in your browser

An SRT file is just a plain-text list of numbered subtitle cues, each with a start and end timecode. Writing those timecodes by hand is slow and easy to get wrong — a single malformed timestamp makes the whole file fail to load. This text to SRT converter builds the structure for you: paste your script, and every paragraph becomes a properly numbered cue with a calculated duration.

Everything happens locally in your browser. Your text is never uploaded to a server, which means you can safely convert client scripts, unreleased episodes, or internal recordings without them leaving your machine.

How the timing is calculated

The generator estimates reading time at roughly 150 words per minute — close to a natural narration pace. Each cue is clamped to a minimum of 2 seconds and a maximum of 8 seconds so that short lines stay readable and long paragraphs get split sensibly, with a 200 ms gap between cues to avoid subtitles running into each other.

This produces subtitles that are correctly formatted and closely timed, which is what you want for a voice-over script, an explainer video, or a rough cut. If you need frame-accurate timing locked to existing audio, generating from text alone will not get you there — transcribe the audio instead, so the timings come from the recording rather than an estimate.

The SubRip (.srt) format

Each cue in a SubRip file has four parts: a sequence number, a timecode line, the subtitle text, and a blank line separating it from the next cue. Timecodes use the format hh:mm:ss,mmm — hours, minutes, seconds, and milliseconds, separated by a comma rather than a period. That comma is the detail most hand-written files get wrong.

1
00:00:00,000 --> 00:00:03,400
Welcome back to the channel.

2
00:00:03,600 --> 00:00:07,100
Today we are converting a script into subtitles.

The output of this tool follows that specification exactly, so the file works in VLC, YouTube, Premiere Pro, DaVinci Resolve, CapCut, and anything else that reads standard SubRip.

When to use it

The workflow fits anyone who writes before they record: creators who script videos in advance, teams subtitling training material, translators who already have a written target text and need it back as timed cues, and editors who want a starting file to nudge into place rather than building one from an empty timeline.

Once you have the file, you can shift every timestamp at once if the subtitles drift, convert the result to plain text, or merge several parts into a single track — each of those is a separate free tool below.