Equaliser
Boost the bass, clear up voices or tame harsh treble with a 10-band equaliser.
Runs in your browser. Your file is never uploaded.
An online equaliser and bass booster
Equaliser adjusts the tone of an audio file with ten bands from deep bass at 31 Hz to air at 16 kHz. Start from a preset such as Bass boost, Treble boost, Clearer voice, Loudness or Reduce rumble, then fine-tune the sliders.
The changes are saved into the file, so it sounds the same on every speaker, headphone and app.
Equaliser in short
Choose an audio file, then pick a preset or move the sliders, then pick the format and download. It's free, there's no sign-up, and it runs in your browser, so the file never leaves your device.
How to use Equaliser
- 1
Choose an audio file
Music, voice recordings, podcasts or any audio.
- 2
Pick a preset
Flat, Bass boost, Treble boost, Clearer voice, Loudness or Reduce rumble.
- 3
Fine-tune
Move each band up to 12 dB up or down.
- 4
Save
Pick the format and select Apply.
Good to know
- Small changes of 3 to 6 dB usually sound best. Big boosts can distort.
- The first time you use an audio or video tool, your browser downloads our 31 MB processing engine. It's kept for next time, so later runs start straight away.
- This tool runs in your browser. Very large files depend on your device's memory.
Common fixes
More bass
Add weight to music played on laptops and phones.
Clearer voices
Lift the mid-range and cut boom for podcasts and lectures.
Less rumble
Remove low hum from traffic, air-conditioning or handling noise.
Brighter sound
Add treble to dull or muffled recordings.
Why use ConvertFile
Ten bands and six presets
Start quickly with a preset, then adjust each band yourself.
Never uploaded
Your audio is processed by your own browser and handed back as a download. It isn't sent to our servers, so there's nothing for anyone to see, keep or leak.
No watermark, no sign-up
The file you download is yours as it is: no logo stamped on it and no account needed. It's free for files up to 500 MB.
Works on any computer or phone
Windows, Mac, Linux, Chromebook, iPhone and Android, in Chrome, Edge, Firefox or Safari. Nothing to install, and the tool keeps working if your connection drops once it has loaded.
Supported formats
- Opens
- MP3WAVM4AAACOGGFLACOpusWMAAIFFMP4 and other videos (sound only)
- Saves as
- MP3WAVM4A (AAC)OGG (Vorbis)FLACOpus
Equaliser: common questions
- How do I boost the bass of an MP3?
- Choose the file, pick Bass boost, adjust the lowest sliders if you want more, and select Apply.
- How do I make a voice recording clearer?
- Try the Clearer voice preset. It cuts low boom and lifts the frequencies where speech sits.
- Why does it distort?
- Big boosts push the level too high. Keep changes to 3–6 dB, or lower other bands instead of raising one.
- Is Equaliser free?
- Yes. Equaliser is free, works without an account and adds no watermark, for files up to 500 MB. Pro raises that to 2 GB.
- Are my files uploaded to a server?
- No. Equaliser runs in your web browser, so the file is read on your own device and never sent to ConvertFile.
- Does Equaliser work on Mac, Windows, Android and iPhone?
- Yes. It runs in any modern web browser, with nothing to install. Very large files work best on a desktop or laptop, because in-browser tools use your device's memory.