Noise Reducer

Reduce background noise.

Drop a recording, mark a stretch of just the background noise, and clean it up — great for steady hiss, hum or fan noise. Everything runs in your browser; nothing is uploaded.

Drop your audio here
or click to choose a file · MP3, M4A, WAV, OGG, FLAC · stays on your device
—
0:00 / 0:00
Analyzing…
0.00s – 0.50s
Start
End
 Pick a stretch of just background noise — no voice or music (usually the start, or a gap).
Strength
Save as
Learns the noise from your selected sample and gates it out with spectral processing, locally. Works best on steady noise; very loud or constantly-changing noise won't fully disappear. Nothing is uploaded.

How to reduce background noise

  1. Drop your file in. Choose or drag an MP3, M4A, WAV, OGG or FLAC — it loads in your browser and is never uploaded.
  2. Mark the noise. Use the Start/End sliders to select a short stretch of just the background noise (no voice or music), and press Hear selection to check it.
  3. Reduce & download. Pick a strength, preview the result, then save it as MP3 or WAV.

📖 Read the full guide: How to remove background noise from a recording →

Frequently asked questions (5)
Is it free?

Yes — completely free, with no sign-up, no watermarks, and no limit on how many files you process.

What kind of noise does it remove?

It's built for steady background noise — hiss, hum, fans, air-conditioning. It learns that noise from your selected sample and gates it out. Sudden, loud or constantly-changing noise (a cough, traffic) won't fully disappear.

Why do I need to select a noise sample?

The cleaner the noise-only snippet you pick, the better the result. A half-second of room tone at the start or in a gap works well.

Are my files uploaded anywhere?

No. Decoding and processing happen locally in your browser, so your audio never leaves your device.

Which formats can I use?

Whatever your browser can decode — MP3 and WAV work everywhere, with M4A, OGG and FLAC where supported. The result is saved as MP3 or WAV.

Related tools

NormalizerEven out loudness Volume BoosterMake it louder Bass BoosterBoost the low end Equalizer8-band EQ Silence RemoverCut dead air Audio CutterCut & trim audio