ファイル・メディア
オーディオ形式変換
Convert MP3, WAV, OGG, FLAC, AAC and more — in your browser.
Drop a file or click to browse
MP3, WAV, OGG, FLAC, AAC — any common audio
FFmpeg.wasm runs entirely in your browser. The first use downloads ~30 MB of engine — cached for every subsequent run.
編集者注
Understanding · MP3, AAC, FLAC, OGG — and what they actually trade.
この詳細な解説章は現在、英語版のみで提供されています。上の変換ツールはあなたの言語で動作しますが、長文の解説記事はまだ翻訳されていません。
よくある質問
Quick answers.
›Is my audio uploaded to a server?
No. The conversion is performed locally in your browser using WebAssembly. Your files stay on your device throughout the entire process.
›Which formats are supported?
The tool supports common containers and codecs including MP3, WAV, OGG, FLAC, and M4A/AAC. Support for specific codecs depends on your browser's underlying capabilities.
›Does converting reduce the audio quality?
Converting to lossy formats like MP3 or AAC will reduce quality due to compression. Converting between lossless formats like WAV and FLAC preserves original audio fidelity.
›Are there file size limits?
The only limit is your device's available system memory. Since the file is processed locally, very large files may cause the browser tab to slow down or refresh.
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