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Audio to SRT: convert MP3, WAV and M4A to subtitles

Upload a recording and our AI turns the speech into a timed SRT subtitle file, plus VTT and a plain text transcript. Podcasts, interviews, lectures, voice-overs and the audio track of any video, in 60+ languages.

Convert audio to SRT How it works

How to convert audio to SRT

No software, no manual timing.

1

Upload the audio file

Choose your MP3, WAV, M4A or other recording and the language spoken in it.

2

AI transcribes and times it

Every sentence gets its exact start and end time and is cut into short subtitle lines.

3

Download SRT, VTT or TXT

Use the SRT in your video editor, on YouTube or in a player; the TXT is the full transcript.

From a recording to a subtitle file

Your audio
interview-episode-12.mp3
MP3 · 38:42 · 2 speakers · English
Any length: a voice memo of one minute or a two-hour lecture.
Your SRT
1
00:00:01,080 --> 00:00:04,300
Thanks for coming on the show today.

2
00:00:04,620 --> 00:00:07,950
Happy to be here, I've been looking
forward to this conversation.
Timed lines you can drop on a video timeline or upload to YouTube.

What people convert

Tips for the best result

Upload only the audio of a big video

The subtitles come from the sound, so the audio track alone gives exactly the same SRT. With the free tool FFmpeg: ffmpeg -i movie.mkv -vn -c:a libmp3lame -q:a 4 movie.mp3. The timing of the SRT still matches the video.

Clear speech beats high bitrate

A 64–128 kbps MP3 is plenty. What matters is the voice: little background music, one person talking at a time, the microphone close to the speaker.

Pick the right language

Choose the language that is spoken. For a recording that switches between languages, choose Multiple languages (auto-detect) and each sentence is written in its own language.

Need it in another language?

Translate the SRT into 80+ languages with the free Subtitle Translator, timestamps kept.

SRT, VTT or TXT?

SRT is the subtitle format nearly every editor, player and video site reads: numbered lines with start and end times. VTT (WebVTT) is the same for web players and HTML5 video. TXT is the transcript without timing, for articles, notes and search. You get all three from one upload.

40 free minutes, then from $0.12 per minute of audio

Verify your email to try it for free. After that, buy minutes once ($15 for 120 minutes) with PayPal or a card. One minute of audio uses one minute of credit, rounded up to the next full minute.

Try it free

Questions about converting audio to SRT

Which audio formats can I convert to SRT?

MP3, WAV, M4A, AAC, OGG, OPUS, FLAC, WMA and the audio of any video file (MP4, MOV, MKV, WebM...). There is nothing to convert first.

Is there a length limit?

Long recordings are fine: podcasts, lectures and whole movies. Paid minutes have no limit on the file length.

How accurate is the transcription?

Usually 90% to 100% on clear speech. Background music, overlapping voices and strong echo lower it. Fix any line afterwards in the Subtitle Studio.

Which languages are supported?

More than 60 spoken languages, among them English, Spanish, Portuguese, French, German, Italian, Russian, Arabic, Hindi, Bengali, Indonesian, Vietnamese, Thai, Turkish, Chinese, Japanese and Korean.

Can I convert MP3 to SRT for free?

Yes, with the 40 free minutes you get when you verify your email. After that you pay only for the minutes you use, with no subscription.

Will the SRT match my video if I upload only its audio?

Yes. The audio track has the same timeline as the video, so every subtitle line lands at the right moment.

Can I get a text transcript instead of subtitles?

You get a TXT transcript with every job. For interviews and meetings see also Video transcription online.

What happens to my files?

They are private. Uploaded files are deleted automatically after 7 days; your SRT, VTT and TXT files stay in your account for a year.

Turn your recording into subtitles

40 free minutes when you verify your email. No credit card needed.

Upload audio

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