How to remove background noise from a recording
Got a voice memo or recording with steady hiss, hum or fan noise in the background? You can reduce it in your browser — for free, with nothing uploaded — by showing the tool what the noise sounds like.
Clean up your recording in 3 steps
- Open the Noise Reducer and drop your recording in. Choose or drag an MP3, M4A, WAV, OGG or FLAC — it loads locally and is never uploaded.
- Mark a noise-only sample. Use the Start/End sliders to select a short stretch of just the background noise — no voice or music (the gap at the start usually works). Press Hear selection to check it.
- Reduce & download. Pick a strength (Light, Medium or Strong), press Preview result to compare, then download as MP3 or WAV.
Frequently asked questions
Is it free?
Yes — completely free, with no sign-up, no watermarks, and no limit on how many files you clean up.
What kind of noise can it remove?
Steady background noise like hiss, hum, fans and air-conditioning. It learns the noise from the sample you select and gates it out. Sudden, loud or changing noise won't fully disappear.
Why do I need to pick a noise sample?
The tool reduces noise that matches the sample you give it, so the cleaner the noise-only snippet you select, the better the result. A half-second of room tone with no voice works well.
Are my files uploaded anywhere?
No. Decoding and processing happen locally in your browser, so your recording never leaves your device.