Bass Booster

Add weight to the low end. One slider boosts the bass; a second sets how far up it reaches. Hear the difference in the preview, then export as MP3 or WAV. Great for thin recordings that need more punch.

Boost the bass of a song online free and add weight to the low end without any software. One slider raises the bass, a second sets how far up it reaches, then you export as MP3 or WAV. It works as an MP3 bass booster for thin recordings that need more punch, or to tame boomy low end by cutting instead. Everything runs in your browser, so nothing is uploaded.

Read the guide: How to Boost Bass Online
Drop an audio file here, or

How it works

  1. 1

    Add an audio file

    Drop in an MP3, WAV, OGG or M4A file to see its waveform.

  2. 2

    Dial in the bass

    Raise the boost slider for more low end, and set how high up the boost reaches.

  3. 3

    Export the result

    Preview the boosted track, then save it as MP3 or WAV.

Instant & 100% private — nothing is uploaded

Everything runs locally in your browser. Your files are processed on your own device and are never sent to a server, so there are no upload waits, no size limits from us, and nothing is ever stored or logged.

Frequently asked questions

How do I boost the bass of a song?
Add the file, raise the bass slider until the low end has the weight you want, and download. Use the reach slider to control how much of the low-mid range gets lifted, then preview before saving.
Can I boost the bass too much?
Yes, very large boosts can overload the loudest moments and distort, especially on bass-heavy tracks. Watch the preview and ease the slider back if it sounds harsh. Moderate boosts add punch without muddiness.
Can I reduce the bass instead?
Yes. Drag the slider below zero to cut the low end instead of boosting it, which helps with boomy recordings or rumble. The same reach control decides how much of the low range is affected.
What formats can I boost, and is my file uploaded?
You can boost MP3, WAV, OGG and M4A files and export the result as MP3 or WAV. The bass boost is applied in your browser on your own device, so nothing is uploaded, and there is no watermark or sign-up.

More tools

Online Audio EditorFull waveform editor: cut, fade, amplify and apply effects.Trim Audio OnlineSet in and out points on a waveform and export MP3 or WAV.Merge Audio FilesJoin several tracks into one, in the order you choose.Change Audio VolumeAmplify, lower or normalize loudness, then export.Audio ConverterConvert between MP3, WAV, OGG and M4A.Extract Audio from VideoPull the soundtrack out of a video as MP3 or WAV.

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