Bass Booster
Boost the bass of any song — free, in your browser. Pick light, heavy or car-subwoofer presets, set how deep the boost goes, and download an MP3 or WAV with a built-in limiter so it doesn’t distort. Nothing is uploaded.
Tip: on phone speakers and earbuds, a boost around 80–100 Hz is what you’ll actually hear; for car subs and big headphones, go lower. Press Space to play or pause.
How it works
- Drop in a songAny audio file from your device. The medium bass boost is ready to play.
- Dial in the bassPick a preset, then set the amount and the frequency while it plays. The curve shows exactly what’s being boosted.
- DownloadMake an MP3, M4A or WAV — the limiter keeps the peaks clean so the boosted file doesn’t crackle.
More bass, without the distortion
FAQ
Is my song uploaded?
No. Everything happens inside your browser on your own device — the processing, the preview and the final file. Your audio is never sent anywhere.
How much bass boost is too much?
Above about +12 dB most songs start to sound muddy and the limiter has to work hard. The extreme preset is there if you want the effect anyway.
Why does the boosted song sound a little quieter overall?
To make room for the extra bass, the rest of the song is turned down slightly before the limiter. The bass ends up louder relative to everything else, which is what you hear as “more bass”.
Can I cut the bass instead?
Yes — use the Bass cut preset or drag the boost below zero. It’s useful for muddy recordings, voice notes or small speakers that rattle.
Is this good for car audio?
Try the Car subwoofer preset, which lifts around 65 Hz and tightens the sub-rumble. Every car is different, so adjust it while listening.
Can I hear the difference?
Yes. Press Compare with original while it plays to flip between the untouched song and your version at the same spot.
Can I upload the result to YouTube, TikTok or Spotify?
Only if you own the song or have permission. An edited version of someone else’s recording is still their recording, and platforms’ copyright systems will usually match it. You’re responsible for what you upload; for your own music, go for it.
Is it free?
Yes — free, no sign-up and no watermark, at full length. The site is supported by the ads on the page.