Shape the sound of any song with this free online equalizer. Upload a track, adjust five bands from sub-bass to air, watch a live spectrum analyzer react, preview it live, and export a WAV — all in your browser, with nothing uploaded and no signup.
Online Equalizer
A free 5-band graphic EQ for any song, with a live spectrum analyzer. Shape the lows, mids and highs, watch the frequencies react, preview live, then export a WAV — all in your browser, nothing uploaded.
Five bands cover the sub-bass, low-mids, mids, presence and air. The spectrum analyzer shows the live frequency content and peak level as it plays, so you can see exactly what each band is doing. Boost gently — a few decibels goes a long way — and cut to fix problems rather than boosting to mask them. A soft limiter on export keeps big boosts from clipping.
How to EQ a song online
- Upload your track — MP3, WAV, M4A, OGG or FLAC, processed on your device.
- Move the bands — lift or cut sub-bass (60 Hz), low-mids (230 Hz), mids (910 Hz), presence (3.6 kHz) and air (14 kHz). Or tap a preset like Bass Boost or Vocal.
- Preview and export — play to hear the change, then Download WAV.
What each band does
- 60 Hz — sub-bass: weight and rumble. Boost gently for more low end.
- 230 Hz — low-mids: warmth, or muddiness if overdone. Cut to clean up a boomy mix.
- 910 Hz — mids: body and presence of vocals and instruments.
- 3.6 kHz — presence: clarity and attack. A small boost adds definition.
- 14 kHz — air: sparkle and openness up top.
Live spectrum analyzer
As the song plays, the built-in spectrum analyzer shows its frequency content in real time — from the 20 Hz sub-bass on the left to 20 kHz air on the right — with a live peak-level readout. Watch the bars to see exactly where a mix is bass-heavy, harsh in the presence range, or short on air, then move the matching band and see the change instantly. It turns EQ from guesswork into something you can see.
Tips for better EQ
Boost a little, cut freely, and fix problems rather than masking them. A few decibels goes a long way. A soft limiter on export keeps big boosts from clipping. To EQ accurately you need speakers or headphones that tell the truth — see our guides to studio monitors and studio headphones.
Free and private
Everything runs locally with the Web Audio API — your file never leaves your browser, there is no signup, and the WAV export has no watermark.
Frequently asked questions
Does it show a spectrum analyzer?
Yes. A real-time frequency analyzer and peak meter run while the song plays, so you can see the balance of bass, mids and treble and watch each band change as you move it.
How is this different from a bass booster?
A bass booster focuses only on the low end. This equalizer gives you five bands across the whole spectrum, so you can shape bass, mids and treble together.
What is the best EQ setting?
There isn’t one — it depends on the song and your speakers. Start from a preset (Bass Boost, Vocal, Loudness) and adjust to taste. Subtle moves sound the most natural.
Does it upload my audio?
No. All processing is done in your browser; your file never leaves your device.
What formats are supported?
Any format your browser can decode — MP3, WAV, M4A/AAC, OGG, FLAC. The export is a WAV.
Does it work on mobile?
Yes, in any modern mobile browser.
Is it really free?
Completely — no signup, no watermark, no limits.