Repair Audio Free Online

Upload a video or audio file and get repaired audio back in one pass: background noise removed, volume normalized, and electrical hum eliminated. Free, no account, no watermark.

Works best on noise, hum, and volume issues. Heavy room echo may need acoustic treatment. Supports MP4, MOV, MKV, WebM, MP3, WAV, M4A up to 2GB.

MP4 MOV MKV WebM MP3 WAV M4A

Output: repaired MP4 or MP3

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Click to upload or drag & drop

MP4 · MOV · MKV · WebM · MP3 · WAV · M4A · Up to 2GB

Removes noise, fixes volume, and eliminates hum in one pass

Processing time depends on file length and your upload speed.

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No account required

Just upload and go. Nothing to sign up for, no email, no credit card.

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No watermark, ever

Your repaired file comes back clean. No branding overlay, no audio stinger, nothing extra.

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Files deleted in 1 hour

Your recording does not live on our servers. Privacy by default.

How It Works

Drop your video or audio file

MP4, MOV, MKV, WebM, MP3, WAV, or M4A up to 2GB and up to 10 minutes free (3 hours with Pro). Drag and drop or click to browse.

Volume normalize, denoise, de-hum

FFmpeg loudnorm brings your audio to broadcast level (-16 LUFS). DeepFilterNet3 then strips background noise from the speech. A final 50/60Hz notch filter cleans up electrical hum. One pass, no settings.

Download the repaired file

Video inputs return as MP4 with the original video stream preserved and the repaired audio remuxed in. Audio inputs return as repaired MP3. For a simpler enhancement with strength control, try the speech enhancer.

Who uses this

Podcasters, YouTubers, and creators with recordings that are too quiet, too noisy, or buzzing with electrical hum. Useful for Zoom calls saved at low volume, voice memos with fan noise, lavalier mic recordings with line hum, and interview audio that needs to land at a consistent broadcast level.

Drop the file, get a repaired version back. No sliders, no presets, no settings to tune.

Need only background noise removed without volume changes? Use Remove Background Noise. Need to cut silent gaps? Use Remove Silence.

Repair Audio ran 424 of the 1,533 audio cleanup jobs measured between July 20 and August 11, 2026, 28% of the total. Across all three cleanup tools, 86% of uploads ran under five minutes and two thirds were video files. The full breakdown is in our data study.

Frequently Asked Questions

Everything you need to know about the audio repair pipeline.

What audio problems does the repair tool fix? expand_more

It removes background noise, wind, hum, static, and fan noise using DeepFilterNet3 AI, normalizes volume to broadcast standard, and removes electrical hum at 50Hz and 60Hz. Works on video and audio files.

Can it fix echo or room reverb? expand_more

The tool works best on background noise, hum, and volume issues. Heavy room echo from untreated spaces may not be fully removed. For best results, record in a room with soft furnishings.

Can I repair bad audio for free without an account? expand_more

Yes. No account, no watermark, up to 10 minutes free, or 3 hours with Pro. Files are deleted 1 hour after download.

What audio and video formats can I repair? expand_more

MP4, MOV, MKV, WebM for video and MP3, WAV, M4A for audio. Video outputs repaired MP4, audio outputs repaired MP3. For lighter noise removal without the full repair pipeline, try the background noise remover.