100% keeps the level unchanged; 200% roughly doubles it.

Adjust Audio Volume

Make an audio file louder or quieter.

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About Adjust Audio Volume

Change the loudness of an audio file by a percentage. Processed on your device.

Select or drag and drop your media file into the Adjust Audio Volume tool above. Your file is processed directly inside your browser using WebAssembly.
Configure your desired settings, conversion presets, or editing controls for the selected media.
Process your file locally and preview the result in the interactive player or canvas viewer.
Click Download to save the finished file directly to your device with no watermarks, accounts, or file size limits.

Other private, in-browser tools you might need.

Cut a section out of an audio file, quick and lossless.

Join multiple audio files into one track.

Speed up or slow down audio without changing pitch too much.

Play an audio file backwards.