How to Repair Audio for Free Online

How it works. Go to vidclean.net/repair-audio. Upload your video or audio file. VidClean runs three stages back to back: FFmpeg loudnorm normalizes the volume to -16 LUFS (the YouTube and podcast standard), DeepFilterNet3 removes background noise from the speech, and a bandreject filter chain notches out 50 Hz and 60 Hz electrical hum plus the first harmonics at 100 and 120 Hz. Download the repaired file. No settings, no sliders.

What it costs. Nothing. No account required, no watermark, no per-file limits beyond 2GB and 30 minutes.

File support. MP4, MOV, MKV, WebM, MP3, WAV, M4A. Video inputs return as MP4 with the original video stream copied bit-for-bit and the repaired audio remuxed in. Audio inputs return as MP3.

Best for. One-click cleanup of noisy or quiet recordings — Zoom calls, lavalier mic captures with line hum, voice memos saved at low volume, outdoor footage with wind and AC bleed. If your audio has more than one problem at once, this is the path of least resistance.

Limitation. Works best on noise, hum, and volume issues. Heavy room reverb from recording in an untreated space is hard for any free tool and may not be fully removed. For just background noise without volume changes, use VidClean's noise-only tool instead.

How it works. Sign in with an Adobe account at podcast.adobe.com/enhance. Upload an audio file. Adobe runs its speech enhancement model — a single end-to-end neural network that handles noise removal, level adjustment, and a "studio sound" voicing pass — and gives you back a cleaned WAV.

What it costs. Free, but you need an Adobe account. Free tiers cap monthly processing time; longer files and higher volumes are gated behind Creative Cloud subscriptions.

The catch. Audio only. If your source is a video, you have to extract the audio first, clean it, then remux it back into the video manually. That is three steps before you are even done. Adobe Enhance also pushes voices toward a uniform "studio podcast" sound that can feel over-processed on quiet, breathy, or low-energy speakers.

Best for. Podcasters who already pay for Creative Cloud, work in audio-only workflows, and want the "Adobe house sound" baked in. If you do not already have an Adobe account, the friction probably is not worth it for a single recording.

How it works. Install Audacity. Import your audio. The full repair workflow takes three passes: Effect → Volume and Compression → Loudness Normalization to bring the file to -16 or -23 LUFS; Effect → Noise Removal and Repair → Noise Reduction using a captured noise profile from a quiet section of the file; and Effect → EQ and Filters → Notch Filter at 50 Hz (Europe) or 60 Hz (US) with a high Q value to remove electrical hum. Export the result.

What it costs. Free. Open source. No account, no watermark, no time limit. Same price as VidClean, but the workflow is manual and the algorithms are decades older.

The catch. You need a sample of pure noise in the recording to capture a noise profile for the noise reduction pass. You also have to do this once per file, and Audacity's noise reduction is a 20-year-old spectral subtraction algorithm — it works on stationary noise like fan hum but struggles with non-stationary noise like wind or traffic. The notch filter is precise but you have to know whether your hum is 50 Hz or 60 Hz (depends on which country recorded the file).

Best for. Audio engineers who want fine-grained control over each repair pass, anyone working with files that have a clear noise-floor sample, and offline workflows where uploading the file to a web tool is not an option.

How it works. Buy and install RX Elements (the entry-level tier of the iZotope RX suite). Open your file in the RX standalone app or as a plugin in your DAW. Run dedicated modules in sequence: Voice De-noise for background noise, De-hum for electrical buzz, De-clip for distorted peaks, and — the one no free tool matches — De-reverb for room echo. Each module gives you visual spectrograms and fine-grained per-band controls.

What it costs. RX Elements runs around $99 one-time at full price, often discounted to $29 during iZotope's frequent sales. The full RX 11 Standard at $399 adds Dialogue Isolate and the more aggressive Spectral Repair brush. There is no free tier.

The catch. Steep learning curve. The RX UI is designed for audio engineers and assumes you know what a spectrogram looks like and what a "comb filter" does. For most YouTubers and podcasters this is overkill — until you hit a recording with bad room reverb, at which point it is the only thing on this list that can fix it.

Best for. Serious content creators, audio post-production for film and TV, anyone repairing damaged archive audio, and anyone whose recording space has untreated reverb. If you make more than one recording a week and care about audio quality, RX pays for itself fast.

It depends on what is wrong with your audio and what you have available.

One file with noise, volume, or hum issues — fast and free: Use VidClean Audio Repair. Upload, wait about a minute, download. Works on both video and audio in a single step. The clear default for most recordings.

You already pay for Adobe and you only need voice cleanup on audio files: Use Adobe Podcast Enhance Speech. The quality is competitive, but the workflow only handles audio and requires extraction-then-remux if your source is video.

You want manual control and have a noise floor sample: Use Audacity. Three passes (normalize → noise reduction → notch filter) gets you most of the way. Free, offline, predictable. Slower than the AI tools.

You need to remove room echo or reverb, or you do professional audio post: Use iZotope RX Elements. The only tool on this list that can meaningfully fix reverb on untreated-room recordings. Paid, but worth it if you have that specific problem.

For most YouTubers and podcasters with everyday audio problems — noise, hum, inconsistent volume — the fastest path from raw file to usable file is VidClean. Upload, wait, download. Then open your editor with audio that does not need a second cleanup pass.