AI Audio to Text Converter
Choose audio or video and let AI extract the speech into editable text and subtitles on your device—no upload, account, or per-minute fee.
Drop an audio or video file here
or choose from your device; video audio is extracted automatically
Audio: MP3, WAV, M4A, AAC, FLAC, OGG · Video: MP4, MOV, WebM, MKV, M4V
Download-ready output formats
AI creates an editable transcript that you can save in the format your next workflow needs.
- TXT
- Plain text for notes, documents, summaries, and publishing.
- SRT
- Timed subtitles for video platforms and editing software.
- VTT
- Web subtitles for HTML5 players, websites, and online courses.
Transcription use cases
Free AI Audio to Text Transcription in Your Browser
Zolkit uses AI to turn speech in MP3, WAV, M4A, and other audio files — plus MP4, MOV, WebM, and other videos — into editable text and timed subtitles. Video audio is extracted in the browser, and processing stays on your device for privacy. You can get a transcript without media uploads, per-minute API charges, or an account.
Multilingual AI transcription
Turn speech into text in English, Simplified or Traditional Chinese, Spanish, French, German, Japanese, Korean, and more.
No audio upload
The selected recording stays on the device while the browser performs transcription.
Automatic language detection
Let AI identify the spoken language or select one to improve consistency.
Runs in your browser
Local AI transcription keeps the workflow private and avoids per-minute speech API fees.
Edit before export
Review and correct the generated transcript directly in the browser.
TXT, SRT, and VTT export
Download plain text or timestamped subtitle files free without an account.
How to Convert Audio or Video to Text
- 1
Drop an audio or video file into the converter and choose the spoken language or automatic detection.
- 2
Select Transcribe with AI; video audio is extracted automatically before local AI transcription starts.
- 3
Review the editable transcript, then copy it or download TXT, SRT, or VTT.
Audio to Text Frequently Asked Questions
How do I transcribe audio to text for free?
Choose an audio file, select its language, and run the transcription. Zolkit processes the recording locally and lets you copy the result or download TXT, SRT, and VTT files without an account.
Can I convert MP3 to text?
Yes. MP3 is supported alongside WAV, M4A, AAC, FLAC, OGG, and WebM audio. Clear speech with limited background noise produces the best transcript.
Does audio transcription work offline?
The AI transcription model must be downloaded the first time it is used. After the browser caches the model, transcription can run without uploading the recording and may work offline if the cached site assets remain available.
Is my recording uploaded to a server?
No. Zolkit reads and transcribes the selected media on the device. A model file is downloaded to the browser, but the recording itself is not sent to a transcription API.
How long does browser transcription take?
Transcription speed depends on audio duration, processor speed, device memory, and browser support. The current reliable runtime uses optimized WebAssembly, so no fixed processing time applies to every file.
Can audio to text create subtitles?
Yes. AI transcription creates timed speech segments that can be exported as SRT or WebVTT subtitle files in addition to a plain-text transcript.