maratoolHow to convert audio to text online (free, no upload)
Turn a podcast, interview, or voice memo into a clean transcript — plain text, SRT, or VTT — without uploading a single byte.
The free Audio to Text tool on maratool transcribes speech straight in your browser. It runs OpenAI's Whisper model on your own device, so interviews and voice memos stay private — nothing is uploaded, and there is no signup or watermark.
How it works
- Drop a file — MP3, WAV, M4A, AAC, OGG, or FLAC.
- Pick language and model — leave language on Auto-detect, and choose Fast, Balanced, or Accurate depending on how much speed you want to trade for quality.
- Transcribe and export — copy the result or download it as
.txt,.srt, or.vtt.
Great for interviews, podcasts, and voice memos
Because the audio never leaves your device, this is a safe way to transcribe sensitive recordings — client interviews, medical notes, or personal memos — without trusting a third-party server. The first run downloads the Whisper model (40–240 MB depending on the quality you pick), which the browser then caches for every recording after that.
Working with video instead?
If your source is a video file, use the Video to Text tool — it extracts the audio first, then runs the exact same transcription. Both export plain text and timed SRT/VTT subtitles from the same pass.