Speech to Text - Free Real-time Voice Recognition Tool

Free speech recognition tool that works directly in your web browser. Speak into your microphone and watch your words convert to text in real-time. Perfect for meeting notes, lecture transcription, interview recording, and more. Supports Korean, English, Japanese, Chinese, Spanish, French, and German.

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How to Use

1. Select Recognition Language

Choose the language for speech recognition from the dropdown menu. You can select from Korean, English, Japanese, Chinese, Spanish, French, or German. It's important to select the same language you'll actually be speaking for accurate recognition.

2. Click Start Recording Button

When you click the Start Recording button, it will request microphone permission. Once you allow permission, speech recognition starts immediately. The status indicator changes to 'Recording' and starts flashing red. Now you can speak into your microphone.

3. Speak and Check Results

Speak clearly into your microphone. Content being recognized in real-time appears in gray italics, and when a sentence is complete, it converts to black text. Punctuation is not added automatically, so edit manually if needed. Click the 'Stop Recording' button to stop recording.

Use Cases

Meeting Minutes

Record meeting discussions in real-time as text. After the meeting, press the copy button to paste into a document editor and organize, significantly reducing the time needed to create meeting minutes. Especially effective when used with screen sharing during online meetings.

Lecture and Seminar Notes

Take notes in real-time while listening to university lectures or online seminars. Particularly useful if you type slowly or have difficulty taking notes. Text is much more convenient for searching and organizing when reviewing later compared to audio recordings.

Interview and Research Recording

Journalists, researchers, and writers can convert interview conversations to text in real-time. Reduces the hassle of listening to recordings and typing later, and helps prepare follow-up questions by immediately seeing key points during the interview.

Blog and Content Writing

Create drafts by speaking instead of typing when writing. Quickly organize ideas by freely speaking your thoughts, then edit the text to create a finished piece. Especially efficient when writing long-form blog posts or articles.

Language Learning Pronunciation Practice

Use it to check if your pronunciation is accurate when learning foreign languages. For example, read an English sentence and check if speech recognition recognizes it correctly to help improve pronunciation. Low recognition rates signal a need to improve pronunciation.

Accessibility Tool

Input text by voice if you have physical disabilities that make typing difficult, or if keyboard use is painful due to conditions like carpal tunnel syndrome. Visually impaired users can also use it with screen readers to create documents by voice, improving digital accessibility.

Tips for Accurate Recognition

  • Use in a quiet environment. Background noise reduces recognition accuracy.
  • Maintain a distance of 15-20cm from the microphone and pronounce clearly.
  • Don't speak too fast; speaking at a moderate pace improves recognition.
  • Pause briefly between sentences to allow automatic sentence completion.
  • Technical terms and proper nouns may be difficult to recognize, so correct them manually later.
  • For long sessions, it's safe to copy and save text periodically.
  • External microphones or headsets provide better recognition than built-in microphones.

Frequently Asked Questions

Which browsers support this feature?

This tool only works in browsers that support the Web Speech API. It works best in Google Chrome (PC/Mac), Microsoft Edge, and Safari (Mac/iOS), while Firefox has limited support in some versions. For mobile devices, Chrome (Android) and Safari (iOS) are recommended. Internet Explorer is not supported, so please update to a modern browser.

Where is voice data stored?

This tool is a pure client-side application, and voice data is processed through the browser's Web Speech API. Chrome and Edge send data to Google's speech recognition servers for processing, while Safari uses Apple's servers. Our website does not collect or store any voice data. Be cautious when dealing with sensitive information.

Is an internet connection required?

Yes, speech recognition requires an internet connection. The Web Speech API uses cloud-based speech recognition services, so it won't work without a real-time internet connection. A stable Wi-Fi or mobile data connection is recommended, and unstable connections may cause recognition to stop or reduce accuracy.

Is punctuation automatically added to recognized text?

Some languages (especially English) have limited automatic punctuation, but most languages including Korean do not automatically add punctuation. Therefore, you need to manually add periods, commas, question marks, etc. after speech recognition. Formatting like paragraph breaks and indentation also requires manual editing, so it's recommended to use this for draft creation and organize later.

Why does recording automatically stop?

The Web Speech API automatically stops recognition after no voice input for a certain period (usually a few seconds). This is a design feature of the API to prevent unnecessary server resource usage. This tool implements an auto-restart feature to automatically restart when recognition stops, but it may not be perfect. For long recordings, occasionally check the recording status and manually restart if needed.

Can it distinguish between different speakers?

No, the Web Speech API currently does not provide speaker diarization functionality. When multiple people speak alternately, all utterances are converted into one continuous text. When recording multiple speakers in meetings or interviews, have each speaker say their name when starting, or manually mark speakers later.

Important Notice

This tool uses the Web Speech API, and voice data is transmitted to the servers of browser providers (Google, Apple, etc.). Do not input sensitive or confidential information by voice. Recognition accuracy varies depending on pronunciation, accent, background noise, and microphone quality, and may be less accurate than professional speech recognition software. Always review and correct recognized text when creating important documents.

This calculator is provided for informational purposes only.

Results are estimates and may differ from actual amounts.

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