MP3 subtitle generator

Convert MP3 to SRT Subtitles Online

Upload an MP3 and generate timed SRT subtitle files for video players, editors, and accessibility workflows. VoiceScribe AI handles timing, punctuation, and optional speaker labels.

Transcription mode

Drop videos here

MP4, MOV, MKV, WebM and more · up to 6 GB each

Choose videos
  • No credit card required
  • Speaker labels
  • TXT, DOCX, SRT, VTT exports for all languages; PDF (basic ASCII only) for plain English text
  • Audio and video files

Supported formats: MP3, WAV, M4A, MP4, MOV, WEBM, AAC, FLAC

Private uploads. Files are used to create your transcript and exports.

Free monthly minutes included. No credit card required to start.

Built for audio, video, meetings, podcasts, lectures and interviews.

TXT, DOCX, SRT, VTT for all languages. PDF (basic ASCII only) for plain English text.

Why this tool

Built for your workflow

Timed SRT output

Export subtitle files with cue timing aligned to your MP3 audio for players and editors that accept SRT.

Works from audio-only files

Start with podcast clips, voiceovers, or narration tracks without needing a separate video file.

Speaker labels available

Turn on speaker labels when multiple voices appear in the recording.

100+ languages

Auto-detect language or choose from 100+ supported languages before export.

How it works

From upload to export

  1. 1

    Upload your MP3

    Drag and drop an MP3 or other supported audio file into the uploader above.

  2. 2

    Choose language and mode

    Pick auto-detect or a specific language, then select a transcription mode that fits your audio quality.

  3. 3

    Download SRT

    Review the transcript and export an SRT file for your player, editor, or hosting platform.

Use cases

Common scenarios

Podcast clips on social video

Add subtitles to short-form video edits built from MP3 interview clips.

Voiceover accessibility

Create SRT files for narrated content that needs captions on web or LMS players.

Editor handoff

Give video editors a timed subtitle file before final picture lock.

Formats

Supported inputs and exports

Input formats

  • MP3
  • WAV
  • M4A
  • AAC
  • FLAC
  • OGG

Export options

  • TXT
  • DOCX
  • SRT
  • VTT
  • PDF (basic ASCII only)

FAQ

Frequently asked questions

Can I convert MP3 to SRT without video?
Yes. Upload an MP3 and VoiceScribe generates timed subtitle cues from the audio track alone.
Will the SRT file include timestamps?
Yes. SRT exports include start and end times for each subtitle cue based on your audio.
Does this work for long MP3 files?
Yes. Long recordings are processed in the cloud. Processing time depends on file length and selected mode.
Can I edit subtitles before export?
You can review the transcript in VoiceScribe and export when the text looks correct.

Free Transcription Tools

Compare audio, video, MP3, MP4 and Zoom transcription workflows in one place.

Ready to transcribe your file?

Upload now or open your dashboard for longer projects and saved transcripts.