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Audio to Text — Free On-Device Transcription

Transcribe audio to text online free — without the recording ever leaving your device. OpenAI's open-source Whisper model runs inside your browser, so interviews, lectures and meetings stay private while you get a timestamped transcript to copy or download as a .txt file. The model downloads once (your choice of ~75 MB or ~145 MB), is cached, and there are no minutes-based fees because your own device does the work.

  • No upload — files stay on your device
  • Works offline once loaded
  • Free forever, no signup, no watermark
Drop an audio or video file, or tap to choose MP3, WAV, M4A, OGG, MP4, WebM… — the recording never leaves your device
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AI model size

Your recording is processed entirely on this device — it is never uploaded. The only download is the open-source Whisper model itself, fetched once from Hugging Face's servers and then stored in your browser cache for next time.

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One-time download — the model is cached after this, and your audio still never leaves the device.

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Done — {{ segments.length }} segments transcribed on your device.

Stopped early — keeping the {{ segments.length }} segments finished so far.

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  • {{ timeLabel(seg.start) }} {{ seg.text }}

How to use this tool

  1. Drop your audio or video file

    MP3, WAV, M4A, OGG and most video files work. The audio track is decoded locally — the file itself is never uploaded anywhere.

  2. Pick a model size and approve the one-time download

    Tiny (~75 MB) is quick but rougher; Base (~145 MB) is the accuracy we recommend. Whichever you pick downloads once from the Hugging Face CDN and is cached for every later visit.

  3. Watch the transcript stream in, then copy or download

    Text appears live as each half-minute of audio is processed. When it finishes, copy the whole transcript or download it as .txt — with or without timestamps.

Questions people ask

How do I convert audio to text for free?

Drop your recording above, approve the one-time AI model download, and Whisper transcribes it right in your browser. Copy the text or download a .txt — free, no sign-up, no per-minute billing, because your own device does the computing.

Can I transcribe audio online free without uploading it?

Yes — that is exactly what this page does differently. Online normally means your recording goes to a server; here the AI model comes to your browser instead, so the transcription is done locally and the audio never leaves your device.

How accurate is the transcription?

Very usable on clear speech with the Base model — comparable to well-known dictation tools. Heavy background noise, crosstalk and strong accents reduce accuracy, and the Tiny model is noticeably rougher than Base; we say so up front rather than promising perfection.

Can I transcribe Hindi or other languages?

Yes. Whisper is multilingual — Hindi, Tamil, Telugu, Bengali and 90+ other languages are supported. Auto-detect usually works, but picking the language in the dropdown helps with accents and mixed speech like Hinglish.

Does it work with video files and WhatsApp voice notes?

Yes. Video files (MP4, WebM, MKV…) have their audio track extracted locally in your browser, and OGG/Opus voice notes decode directly. If a file fails, converting it to MP3 or MP4 first almost always fixes it.

Why is my transcription slow?

Speed depends on your hardware. On a desktop with WebGPU the model runs many times faster than real time; on phones or older browsers it falls back to a slower CPU path, and a long recording can take several minutes. The progress bar and live text show it is genuinely working.

Related tools

Free because it costs us nothing to run: your browser does the work, not our servers. Made by Dynamb Technologies — we build software for businesses.