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MP3 Volume Booster

Use MP3 Volume Booster, review the result, and keep the original until the output is checked.

ここにMp3ファイルをドラッグ&ドロップ
またはクリックしてファイルを選択

Processing your audio files... This may take a moment.

一括対応ツール:最大 50 ファイル・各 1 GB すべてブラウザ内で実行されます - ファイルはアップロードされません 新しいファイルとして保存します。元のファイルは変更されません
ファイルの取り扱い: このツールはブラウザのタブ内で動作します。ファイルはアップロードもサーバー保存もされず、ページを閉じるか再読み込みすると消えます。
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MP3 Volume Booster よくある質問

What does MP3 Volume Booster do?

Our free MP3 Volume Booster helps you instantly make your songs louder online. Simply upload your file, adjust the loudness, and download the boosted version—no software required. Fast, easy, and secure for all MP3 files.

Which files work with MP3 Volume Booster?

This category commonly supports MP3, WAV, AAC, OGG, and M4A. Use the accepted file types shown in the uploader, because support varies by browser and by the engine behind each tool.

Does this change the file quality?

Any change that alters the samples forces a re-encode, so quality depends on the export settings you pick. If you only need the same audio in another container, choose a setting that does not re-encode.

Will my original file be changed?

No. The work is done on a copy in this tab by your browser's audio decoder and a WebAssembly build of ffmpeg, and the result arrives as a separate download, so your original is still there if you need it.

How is my file processed?

It is not uploaded. The processing is done locally by your browser's audio decoder and a WebAssembly build of ffmpeg, so the practical ceiling is your device's memory and the limit shown beside the uploader - no queue, no account, no copy on a server.

Is the MP3 Volume Booster free?

Yes. The MP3 Volume Booster is free with no trial limit, subscription, or watermark on downloads. You can use it for personal and commercial projects without creating an account.