Convert audio to SRT free.
Turn an MP3, M4A or WAV file into a timed SRT subtitle file with AI — ready for Premiere, DaVinci, CapCut and YouTube.
Keep this tab open while it works. Finished files are saved in this browser, and if the tab closes, you can pick up where it stopped.
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Preview subtitles
Recent files kept in this browser only
The speech model downloads once (about 110 MB for Fast, 310 MB for High accuracy), then it's cached. Chrome or Edge on a computer is fastest.
Free.Unlimited.Forever.
Easy as one, two, three
How to convert audio to SRT
- 1
Add your audio file
MP3, M4A, WAV or any audio your browser can play.
- 2
Generate subtitles
AI transcribes the speech and times each line to the audio.
- 3
Download the .srt
A VTT file, a plain transcript and translations come with it.
Audio to SRT, explained
From an audio file to timed subtitles
An SRT file is a plain-text list of subtitles, each with a number, a start time, an end time and the words to show. To make one from audio, Corbeia transcribes the recording with AI, keeps the timestamp of every word, and groups the words into short lines that are easy to read on screen.
1 00:00:01,200 --> 00:00:03,900 Welcome back to the show. 2 00:00:04,100 --> 00:00:07,300 Today we're talking about sleep.
MP3 to SRT
MP3 is the most common audio file there is, and it converts the same way as any other: drop it in, generate, download. The SRT lines up with the MP3 from the first second, so if the MP3 is the soundtrack of your video, the subtitles line up with the video too.
When an audio to SRT converter is the right tool
- Podcast video and audiograms — add captions to the clips you post on social media.
- Separately recorded voice-over — subtitle the voice track before it is mixed into the edit.
- Large video projects — export just the audio from your editor; it's much smaller than the video.
- Courses and audiobooks — offer captions for listeners who prefer to read along.
Using the SRT file
Import it into Premiere Pro (File → Import), DaVinci Resolve (drag it onto the timeline), Final Cut Pro or CapCut, or upload it to YouTube Studio under Subtitles. Need WebVTT for a web player? The VTT file is included. Starting from a video file instead? Use the MP4 to SRT converter.
Every format, all free
One audio file, every format
SRT, VTT, plain text and translations — all free.
Why it's free
Unlimited audio to SRT. Nothing uploaded.
Cloud transcription tools upload your video and pay for servers by the minute — so they charge you by the minute. Corbeia runs the speech model inside your browser. There's no server bill per video, so there's nothing to charge you for.
Cloud tools
- Upload your video
- Limited free minutes
- Sign-up required
- Pay per minute
Corbeia
- Nothing uploaded
- Unlimited
- No account
- $0, forever
Corbeia for Windows · Free download
For long videos and whole courses.
- Higher accuracy — the large speech model a browser can't run
- Much faster — your full GPU, hours-long files, any format
- Works offline — the speech model is built in, no setup
- Batch processing — drop a folder, get every file Pro
- No watermark lines in your subtitle files Pro
First launch: if Windows shows "Windows protected your PC", click More info, then Run anyway. Corbeia is a new app, so Microsoft SmartScreen doesn't recognize it yet.
Questions? We've got answers
Audio to SRT FAQ
How do I convert audio to SRT?
Drop the audio file into the converter above and click Generate subtitles. AI transcribes the speech and times every line, then you download a ready-to-use .srt file.
How do I convert MP3 to SRT?
The same way: drop the MP3 in and generate. MP3, M4A, WAV, AAC, OGG and FLAC all work.
Is the audio to SRT converter free?
Yes — free and unlimited, with no sign-up and no limit on length.
Why make an SRT from audio instead of the video?
Audio files are smaller and decode faster. If your editor exports the voice track or you recorded sound separately, convert that, then add the SRT to your video in Premiere, DaVinci Resolve, Final Cut or CapCut.
Can I use the SRT for lyrics or a podcast?
Yes. Podcasters use SRT files for video versions of episodes and for audiograms. For songs, results depend on how clearly the vocals stand out from the music.
Is the timing accurate?
Each subtitle line is timed to the speech using word-level timestamps, then split into short, readable lines.
Can I get a translated SRT?
Yes. Pick a language under Translate to and you also get a translated SRT and a bilingual SRT.
Is my audio uploaded?
No. Everything happens in your browser. Your audio never leaves your computer.
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