Free Voice Transcription: Convert Speech to Text with AI
Need to transcribe meetings, podcasts, interviews, or lectures? Our free voice transcription tool uses OpenAI's Whisper model to convert audio to text with remarkable accuracy—and it all happens right in your browser. No uploads, no subscriptions, no limits.
100% Private - Your Audio Never Leaves Your Device
Unlike cloud-based transcription services that upload your audio to remote servers, our tool processes everything locally in your browser using WebAssembly technology.
- No audio uploads to any server
- Works offline after initial model download
- Perfect for confidential meetings and sensitive content
Why Choose Our Voice Transcription Tool?
AI-Powered Accuracy
Uses OpenAI Whisper, the same technology behind ChatGPT's voice features. Handles accents, background noise, and multiple speakers with impressive accuracy.
99+ Languages Supported
Transcribe audio in English, Japanese, Chinese, Spanish, French, German, and 90+ other languages. Auto-detection makes it effortless.
Timestamps Included
Get word-level timestamps with your transcript. Perfect for creating subtitles, navigating long recordings, or syncing with video.
Multiple Export Formats
Export as plain text (TXT), SRT subtitles for video editing, or JSON with full timestamp data for developers.
All Major Audio Formats
Supports MP3, WAV, M4A, MP4, WebM, OGG, FLAC, and more. Files up to 500MB with no duration limits.
How It Works
Upload Your Audio
Drag and drop or click to select your audio file. We support most common audio and video formats up to 500MB.
Choose Settings (Optional)
Select a language for better accuracy, or let auto-detect handle it. Choose between faster (Tiny) or more accurate (Base) models.
Start Transcription
The AI model downloads once (cached for future use), then processes your audio entirely in your browser. Watch the progress in real-time.
Export Your Transcript
Copy to clipboard or download as TXT, SRT subtitles, or JSON. Toggle timestamps on/off as needed.
Perfect For
📹 Meeting Notes
Record your Zoom, Teams, or Google Meet calls and get searchable, shareable transcripts in minutes.
🎙️ Podcasters
Create show notes, transcripts for SEO, and accessible content for hearing-impaired listeners.
🎓 Students
Convert lecture recordings into study notes. Search through hours of content instantly.
📰 Journalists
Transcribe interviews quickly without sending sensitive audio to third-party services.
🎬 Content Creators
Generate SRT subtitle files for YouTube, TikTok, or any video platform automatically.
💼 Professionals
Keep records of client calls, consultations, and voice memos without privacy concerns.
Choosing the Right Model
| Model | Size | Speed | Best For |
|---|---|---|---|
| Tiny | ~75MB | Fastest | Quick transcription, clear audio |
| Tiny English | ~75MB | Fastest | English-only content |
| Base ⭐ | ~145MB | Balanced | Most use cases (recommended) |
| Base English | ~145MB | Balanced | Best English accuracy |
Tips for Best Results
Pro Tips
- Clear audio = better results. Reduce background noise and ensure the speaker is close to the microphone.
- Select the language manually if you know it for better accuracy, rather than relying on auto-detect.
- Use English-specific models for English content—they're optimized and more accurate than multilingual models.
- First load takes longer as the AI model downloads. It's cached after that for instant future use.
- Use Chrome or Edge for best performance. Safari has some WebAssembly limitations.
How We Compare
| Feature | AI AutoSite | Otter.ai | Others |
|---|---|---|---|
| Price | 100% Free | $17/month | $10-30/month |
| Privacy | 100% Local | Cloud Upload | Cloud Upload |
| Usage Limits | Unlimited | 300 min/month | Limited |
| Offline Mode | Yes | No | No |
| Languages | 99+ | 3 | Varies |
Technical Details
- • AI Model: OpenAI Whisper via Transformers.js
- • Processing: Web Worker + WebAssembly (WASM)
- • Audio Processing: Converted to 16kHz mono for optimal recognition
- • Chunking: 30-second segments with 5-second overlap for accuracy
- • Caching: Model cached in IndexedDB after first download
- • Browser Support: Chrome 91+, Edge 91+, Firefox 89+, Safari 16.4+
Ready to Transcribe?
Start converting your audio to text for free. No signup required.
Try Voice Transcription