Free tool
Audio to text
Transcribe audio to text locally. MP3, WAV, M4A. Whisper in your browser. No upload, no account.
Runs on your machine. Audio and transcript never leave this device
Downloading decoder_model_merged_q4.onnx
Your file stays on this device. Transcription runs locally in the browser with Whisper.
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About this tool
Transcribe audio to text in your browser
Transcribe audio to text free without sending files to a server. You already have the recording: an interview, a voice memo, a meeting capture, a podcast clip. What you need is editable text. This free audio to text tool runs Whisper locally in your browser. Your audio never uploads to UBIK Flow servers. No account, no cloud queue.
That privacy-first design matters when recordings contain client names, medical details, legal discussions, or unreleased creative work. You stay in control: decode, transcribe, copy, and download on your machine.
What this tool does
- Accepts common audio formats: MP3, WAV, M4A, OGG, WebM, and FLAC (up to 25 MB per file)
- Runs Whisper in the browser so transcription happens on your CPU, not our servers
- Shows progress while the model loads and while your file is processed
- Outputs plain text you can copy or download as
.txt - Works without signing in: open the page and start
How local audio transcription works
When you drop a file, the browser decodes it and passes audio frames to a compact Whisper model loaded via WebAssembly. The first run may take longer while weights download; after that, your browser can cache them for faster repeat use.
Processing speed depends on your device: a recent laptop usually handles a few minutes of speech in reasonable time. Very long files may feel slow, which is the trade-off for keeping everything on-device instead of shipping audio to a datacenter.
Which free tool should I use?
| Situation | Best tool |
|---|---|
| You already have a recording file | Audio to text (this page) |
| You want to speak now with record/stop | Speech to text |
| You prefer pause-based live dictation | Live speech to text |
Speech to text records short clips from your microphone in the browser. Live speech to text listens continuously and inserts text when you pause. Audio to text is built for files you captured earlier: commutes, calls, field notes, webinar replays.
A practical workflow after transcription
Raw Whisper output is rarely publish-ready. Most people run a short cleanup pass:
- Transcribe the file here
- Format timestamps, line breaks, and speaker tags with the transcript formatter
- Count words and estimate reading time with the word counter
- Scan for filler habits using the filler word counter if the source was spoken
Privacy and local processing
- Audio is not uploaded to UBIK Flow
- Transcripts are not stored on our servers
- No account means no profile tied to your files
- Closing the tab clears in-memory state
Tips for better accuracy
- Choose the right spoken language in the tool if multiple options are available
- Use clear source audio: less background noise, fewer overlapping speakers
- Trim silence before upload if your file is very long (external editor)
- Verify hardware with the microphone test when recording new material yourself
- Check pacing with the speaking speed test if you plan to re-record
Whisper handles accents and casual speech well, but no model is perfect. Review proper nouns, numbers, and homophones before publishing.
Related free tools
- Speech to text: speak now with record/stop
- Live speech to text: continuous dictation with pause detection
- Transcript formatter: clean messy ASR output
- Word counter: measure length and reading time
When to use UBIK Flow instead
This page proves that local transcription works without uploading files. UBIK Flow on Mac or Windows is the next step when you want voice input inside every app: email, docs, Slack, IDEs, with customizable shortcuts and AI editing in context.
Questions
UBIK Flow
Like this, but everywhere you work
UBIK Flow is a desktop app that brings local speech recognition and AI into your daily workflow, on top of what you're already doing, without copy-paste.
- Dictate in any app, with on-device transcription
- AI sees your screen and understands your context
- ChatGPT and Claude in a side panel, one shortcut away
Mac and Windows. Works offline. Free download.
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Speech to text online
Free speech to text online from your microphone. Record, stop, edit your transcript locally. No upload, no account.
Filler word counter
Count filler words in a transcript, see matches per 100 words, and review highlights in context. Paste text or import a document. Nothing is uploaded.
Speaking speed test
Measure your speaking words per minute, calculate WPM from a word count and duration, or compare your speaking and typing pace. Free in your browser.