Quick voice memos
Capture ideas, reminders, and drafts by speaking — get text in seconds without installing desktop software.
声をテキストに文字起こし
マイクで無料の音声入力テキスト化 — ブラウザ内でプライベートに文字起こし。アカウント不要。
Whisper AI の無料文字起こしを使う理由
100% free in the browser
No subscription for this tool. Transcribe audio, voice, or URLs with OpenAI Whisper models running client-side.
Private by design
Your audio is not uploaded to our servers for transcription. Processing stays on your device in a Web Worker.
No sign-up required
Start immediately — no account, no API key. Ideal for one-off files, quick memos, or trying speech-to-text privately.
無料ブラウザ文字起こしの仕組み
Three steps from audio to text — all local after the model loads.
01
Add your audio
Upload a file, record with your mic, or paste an audio URL — depending on which free tool you use.
02
Choose language & model
Pick source language and a Whisper model size. Quantized models load faster on most devices.
03
Copy or export
Read the transcript on the page, copy to clipboard, or export TXT / JSON — your text, your workflow.
声をテキストに文字起こし
Writers & product teams
Dictate outlines, user stories, or emails when typing slows you down. Copy or export the transcript when you are done.
Accessibility & hands-free
A browser-based voice to text option when you need hands-free input or prefer speech over typing — free and private on your machine.
無料でプライベートな文字起こし
Built for people who cannot send sensitive audio to the cloud.
- Transcription runs in your browser via a Web Worker — not on Whisper AI servers.
- Audio files are not uploaded for the speech-to-text step on these free tool pages.
- Model weights may cache in your browser after the first load for faster repeat use.
- For how we handle site data overall, see our . プライバシーポリシー
声をテキストに文字起こし FAQ
Why does the browser ask for microphone access?
Recording happens in your browser. We need mic permission only to capture audio for local transcription — not to stream it to our servers for speech-to-text.
Is my voice recording stored on your servers?
No. The recording is processed on your device for transcription. We do not upload your audio for this free tool’s speech-to-text step.
Can I use voice to text without signing up?
Yes. This page is free to use with no account. Allow the microphone, record, and transcribe locally.
Which languages are supported?
Choose a source language before transcribing. Whisper supports many languages; pick the one that matches your recording for better accuracy.
Is this transcription tool really free?
Yes. These pages are free to use with no paywall for local browser transcription. Optional paid plans apply to the Chrome extension and cloud features, not this on-page Whisper tool.
Is my audio private when I transcribe here?
For these free tools, speech-to-text runs locally in your browser. We do not upload your audio to our servers for transcription. URL mode fetches the file from the link you paste; that request goes from your browser to the host.
More free transcription tools
音声ファイルをテキストに
ブラウザで無料かつプライベートに音声をテキスト化。ファイルをアップロードし、Whisper でローカル文字起こし。サーバーへのアップロードは不要です。
音声URLをテキストに
無料の URL テキスト化 — 音声リンクを貼り付け、ブラウザでプライベートに文字起こし。文字起こし用のアップロードは不要。
音声をテキストに
マイクで話した内容をテキストに。ブラウザ内で無料・プライベートにローカル処理。アカウント不要。
MP3をテキストに
MP3をアップロードしてブラウザでテキスト化 — Whisperでローカル、無料・プライベート。
MP4をテキストに
MP4動画をアップロードしてブラウザで文稿化 — 無料・プライベート。
M4Aをテキストに
M4Aとボイスメモをブラウザでテキスト化 — 無料・プライベート。
WAVをテキストに
ロスレスWAVをブラウザで文字起こし — 無料・プライベート。
ボイスメールをテキストに
エクスポートしたボイスメールをアップロードしてブラウザで転写 — 無料・プライベート。
動画をSRTに
動画をアップロードしてSRT字幕をダウンロード — ブラウザでタイムスタンプ付き。