How to Convert a YouTube Transcript to an SRT Subtitle File (Free)

An SRT file is the universal language of subtitles. Video editors, social platforms, players, and accessibility tools all read it. So when you want to add captions to a reupload, repurpose a video for another platform, or feed clean timed text into an editing workflow, you often need the YouTube content as an .srt — not as a wall of plain text.

The good news: if a YouTube video has captions, you can get a working SRT in a couple of minutes without paying for anything. This guide shows the fastest free method and the simple format rules behind it.

What an SRT File Actually Looks Like

An SRT is just plain text with a strict pattern. Each caption is a numbered block: an index, a timestamp range, and the line of text.

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

2
00:00:03,400 --> 00:00:07,120
Today we are talking about subtitles.

The rules are simple:

Each block starts with a sequential number (1, 2, 3…).
The timestamp uses HH:MM:SS,mmm with a comma before milliseconds, and --> between start and end.
One blank line separates each block.

Once you understand this shape, converting a transcript into it is mechanical.

Step 1: Get a Timestamped Transcript

Because SRT needs start and end times, you must begin with a timestamped transcript — not plain text. The fastest free way to get one is YTTranscript.

Copy the YouTube video URL.
Open YTTranscript and paste it in.
Click Get Transcript Now.
Choose the timestamped view and Copy or export the transcript.

This takes about 10 seconds, with no login and no browser extension. For more on timed exports, see our guide to the YouTube transcript with timestamps.

Try it free: Pull a timestamped YouTube transcript in one click, then convert it to SRT. → Try YTTranscript.app

Step 2: Convert the Transcript to SRT

You have three reliable options, depending on how comfortable you are with tools.

Option A — Let an AI do it. Paste your timestamped transcript into ChatGPT, Claude, or Gemini with a prompt like: "Convert this timestamped transcript into valid SRT format. Number each block sequentially, use HH:MM:SS,mmm timestamps, and keep lines short." This is the easiest path for most people and handles formatting automatically.

Option B — Use a subtitle editor. Free desktop tools like Subtitle Edit (Windows) or Aegisub (cross-platform) let you import text, set timings, and export a polished SRT. Best when you need to fine-tune timing.

Option C — Convert from YouTube's SBV. If you own the video, YouTube Studio exports captions as .sbv. A free SBV-to-SRT converter turns that into a standard SRT in one step.

Which Method Should You Use?

Method	Best for	Effort	Cost
AI (paste transcript)	Quick, clean conversions	Low	Free
Subtitle editor	Precise timing control	Medium	Free
YouTube Studio SBV export	Videos you own	Low	Free
YTTranscript (get the source text)	Any video, fast start	Very low	Free

In every workflow above, the first step is the same: get the transcript text. That is where a free, no-signup tool saves the most time.

Why Not Just Use YouTube Studio?

YouTube Studio can export SRT — but only for videos you uploaded. If you are working with someone else's public video (for analysis, translation, or a reaction edit you have the right to make), Studio is not an option. That is exactly the gap YTTranscript fills: it reads the public caption track of any video, instantly, for free.

Common Pitfalls and How to Avoid Them

Missing milliseconds. SRT timestamps need three-digit milliseconds (,000). If your transcript only shows MM:SS, ask your AI tool to pad them.
Comma vs. period. SRT uses a comma before milliseconds (00:00:03,400), unlike VTT which uses a period. Mixing them breaks players.
Blocks too long. Keep each caption to one or two short lines so they fit on screen. Most editors can auto-split long lines.
No captions on the video. If the video has no transcript at all, see what to do when a YouTube video has no transcript.

Putting It Together

The whole workflow is: grab a timestamped transcript → convert to SRT → import into your editor. Because the conversion is just reformatting text, the slowest part is getting the transcript — and that is the part YTTranscript reduces to a single click. Once you have the SRT, you can burn it into a video, upload it as a caption file, or translate it for other audiences.

Frequently Asked Questions

What is an SRT file? SRT (SubRip) is the most widely supported subtitle format. It is a plain-text file that pairs numbered caption blocks with start and end timestamps, readable by almost every video editor and player.

Can I get an SRT directly from YouTube? Only if you own the video — YouTube Studio lets the uploader download captions as SRT. For videos you do not own, grab the transcript with a tool like YTTranscript and convert it.

Do I need timestamps to make an SRT? Yes. SRT requires start and end times for each caption block, so export a timestamped transcript rather than plain text.

Is YTTranscript free for this? Yes. YTTranscript is 100% free, with no signup and no extension. You can copy or export a timestamped transcript in seconds.

Will the SRT timings be perfectly accurate? Timings come from YouTube's caption track, which is usually well aligned. For broadcast-grade precision, fine-tune the result in a subtitle editor like Subtitle Edit or Aegisub.

Start with a clean timestamped transcript and the rest is easy. → Try YTTranscript.app free