Audio to Text

Turn an MP3, WAV, M4A, or other audio file into written text using on-device speech recognition. Interview recordings, dictations, and voice memos stay on your device.

Conversions

About Audio to Text

Audio to Text transcribes speech from audio files entirely in your browser using the Web Speech API or Whisper compiled to WebAssembly, depending on what your browser supports. It handles interviews, lectures, podcasts, and voice memos and returns editable text you can copy into your notes. The transcription runs locally — critical for journalists, lawyers, and healthcare workers whose audio contains sensitive information. For long files (over 30 minutes) expect the transcription to take a few minutes on a phone.

Best for

  • Transcribing interview recordings for article prep or research notes
  • Turning a voice memo into searchable text in your notes app
  • Subtitle draft for a podcast or video before manual cleanup

Pros

  • +Handles MP3, WAV, M4A, AAC, Ogg, FLAC, Opus and other formats
  • +Editable text output — copy straight into your notes or editor
  • +Local transcription — sensitive audio never leaves your device

Cons

  • −Background music or noise lowers transcription accuracy
  • −Very long audio (>1 hour) needs patience or splitting to avoid RAM limits

How to use Audio to Text

  1. 1

    Select or upload the source files from your local device storage.

  2. 2

    Specify conversion settings, options, or target output formats.

  3. 3

    Wait for the client-side browser logic to process the files securely.

  4. 4

    Download the finalized outputs directly to your system.

Frequently Asked Questions

How accurate is the transcription?
Clear studio-quality speech in a supported language typically transcribes at 90–95% accuracy. Strong accents, background noise, overlapping speakers, or technical jargon lower accuracy; expect to manually clean up the final 5–15%.
Which languages are supported?
Major languages including English, Spanish, French, German, Italian, Portuguese, Turkish, Hindi, and Arabic work well. Less-common languages may not be supported depending on the browser; check the picker for your file's language before transcribing.
Does it use my microphone or live streaming?
No. Audio to Text works on an uploaded or dropped audio file, not a live microphone feed. For live speech use Live Dictation instead.
Can I transcribe a 2-hour podcast?
Yes, but on a phone it takes several minutes and may strain RAM. Split very long audio into 30-minute chunks with a trim tool first for a smoother, faster, and more accurate result.
Are my private audio files uploaded during transcription?
Never. The speech-to-text runs via WebAssembly and the browser's built-in speech APIs. Interview recordings, dictations, and sensitive voice memos stay on your device the whole time.

Related tools

FREE

100% Free

No hidden fees, no subscriptions, and no limits. Enjoy complete access to all features gratis.

SIGNUP

No Signup Required

Start converting immediately without creating an account or sharing email address.

PRIVACY

Private & Secure

Your files never leave your device. All processing is completed locally for maximum privacy.

BATCH

Batch Conversion

Convert multiple files simultaneously to save time. Fast and efficient multi-file queue.

LOCAL

Runs in Browser

Utilizes advanced client-side WebAssembly technology to process files directly inside your tab.

FORMATS

200+ Formats

Supports a wide variety of formats including images, documents, audio, video, and more.

USER REVIEWS

Audio to Text Quality Rating

4.8
25 reviews

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