Online Bass Booster
Pump up the lows on any track. Adjustable bass gain that sounds great in cars, on subwoofers and over headphones.
Drop your audio file here
or click to browse a file
Pumps everything below ~110 Hz. Works best on songs that already have bass to lift.
Bass boost
+6 dB doubles perceived bass loudness. Anything past +14 dB is meme territory.
About this bass booster
Boost the bass on any audio file. The tool applies a low-shelf bass filter — adjustable in dB — to lift everything below the cutoff frequency without touching the mids or treble.
Use it to wake up a flat MP3 for the car, give a vocal podcast more chest, or just turn up the lows on a meme. We don't analyse or index your file.
How to bass-boost an MP3 online
- 01
Drop in audio
MP3, WAV, FLAC, OGG, M4A and more — common audio formats.
- 02
Pick a boost
Slide the bass gain from +1 dB (subtle) to +20 dB (extreme).
- 03
Download the result
The boosted file is rendered and offered as a download.
Why use this bass booster
- Adjustable boost from 0 dB to +20 dB
- Quick presets: Subtle, Punchy, Heavy, Earrape
- Output keeps the same format as the input
- Free, private, no install
- No watermark, no signup, no length cap
- Great for cars, subwoofers, gym playlists and memes
Bass booster FAQ
What's a safe boost level?
+3 to +6 dB sounds louder without obvious distortion. Above +12 dB you'll start to hear pumping or clipping on busy mixes — fine for memes, less so for serious listening.
Will it ruin my speakers?
Not at sane levels. Extreme boosts on small phone speakers can sound buzzy because the speaker can't move enough air. On headphones and proper subs you'll just hear more bass.
Does it touch the mids or treble?
No. It's a low-shelf filter — only frequencies below ~110 Hz are lifted. Vocals and cymbals are untouched.
Will the audio be re-encoded?
Yes — applying a filter requires re-encoding. The output uses the same format as the input at a sensible quality default.
More effects tools
Pitch, speed, vocals, bass