Free Online Bass Booster
Make any track hit harder with a low-end boost.
What is this tool
AudioToolKit boosts the bass of any track online for free, in your browser. A low-shelf lift from 120 Hz down adds low-end punch, so kicks and bass lines hit harder on small speakers and car systems while mids and highs stay clean. Set the boost from 0 to 18 dB and download the result as MP3 or WAV, with no upload and no install.
Drag and drop your files here
or
MP3, WAV, M4A, AAC, OGG, FLAC, AIFF, AIF, OPUS, WMA, AMR — up to 25 MB per file
0-6 subtle, 10 strong, 14-18 extreme.
Output
Bass-boosted MP3 or WAV
Accepted formats
.mp3, .wav, .m4a, .aac, .ogg, .flac, .aiff, .aif, .opus, .wma, .amr
Why use this free tool
Some mixes sound thin on small speakers and car systems. The bass booster applies a low-shelf lift from 120 Hz down, so kicks and bass lines hit harder while the mids and highs stay clean.
How does the free bass booster work?
- 1
Upload the track.
- 2
Set the boost level — 10 dB is a strong default.
- 3
Press Process and download the boosted track.
Frequently asked questions
Will it distort at high levels?
The effect is a filter, so no new distortion is added, but very hot mixes can clip. If you hear harshness, lower the level.
Which genres benefit most?
Hip-hop, house, EDM and rock — anything with a low-end-heavy mix. Vocals-first tracks usually need only a light touch.
Is there a preset for a milder boost?
Yes. The bass boost presets offer five levels from very light to extreme.
Related tools
More answers in the Help Center.