Normalize audio to a Peak or LUFS target, compare the measured result with the original and download a more consistent audio copy.
Peak & LUFS modes · Measured before and after · Processed in your browser · One file up to 100 MB
Measured, not guessed
The normalizer analyzes the complete recording before it changes anything. Set a repeatable target, keep the same duration and arrangement, then verify the new level instead of relying on waveform size alone.
Choose by outcome
Both methods change level, but they answer different questions. Choose after uploading, when you can match the method to the file's next use.
Peak Normalization measures the loudest sample and applies one constant gain change to the whole file. Its quiet-to-loud relationship stays the same.
Loudness Normalization measures the full recording, works toward an Integrated LUFS target and uses a True Peak ceiling to control the result.
Useful starting points
Use the requirement from your platform, broadcaster or client first. These presets make practical starting points when no delivery specification has been provided.
A common music playback reference—not a promise that every platform will leave the file unchanged.
A practical starting point for a finished spoken-word mix or voice-over delivery.
Useful when spoken audio needs a little more room around stronger moments.
The EBU R 128 programme loudness reference for broadcast workflows.
Using Peak mode? Choose −1 dBFS for a safe default, −3 or −6 dBFS when you need more mixing headroom, or −0.1 dBFS when maximum sample level is the priority.
Different files need different targets
Choose a workflow to see where normalization belongs, which mode to start with and what it cannot fix for you.
Use Loudness mode after the mix is finished when one song or demo feels noticeably quieter or louder beside another.
Start with −14 LUFS when no delivery specification is available.
Keep a True Peak ceiling and listen to the loudest section.
Process each file separately with the same settings; this tool is not a batch processor.
Normalize after editing, cleanup and speaker balancing. Loudness mode adjusts the complete file; it does not detect each person independently.
Use −16 LUFS as a practical spoken-word starting point.
Compare the original and result so breaths and emphasis still feel natural.
If one speaker remains too quiet, balance that track or section in Audio Editor first.
Use Peak mode when predictable sample headroom matters more than matching perceived loudness across complete recordings.
Choose −3 or −6 dBFS when the clip still needs room for later mixing.
Use −1 dBFS when you want a safe high peak for a finished standalone sound.
Peak mode applies constant gain, so the waveform's internal dynamics stay proportional.
Proof before export
The result view does more than show a larger waveform. It reports the original measurement, normalized measurement and applied gain, then lets you compare both audio versions.
One measured workflow
Upload first, choose the method after the file is ready, then listen and check the numbers before keeping the result.
Choose an MP3, WAV or another supported file up to 100 MB. The original stays unchanged on your device.
Use Loudness for an Integrated LUFS target, or Peak when the highest sample and headroom matter most.
Start with a preset or enter a custom value. Loudness mode also lets you choose a True Peak ceiling.
Review the measured result, listen to the original and normalized copies, then download the format you need.
Your file, your device, your output
The source remains unchanged while the browser measures, processes and prepares a separate download.
The file is not uploaded to an AudioMuse processing server. The processing engine may download the first time it is needed.
Normalization creates a separate result. Lowering a clipped file cannot rebuild peaks already lost from the source.
Download WAV, MP3, M4A, FLAC or OGG. WAV and FLAC avoid another lossy encoding step.
MP4 files with a readable audio track are accepted, but this tool downloads normalized audio only. To keep the picture and change its sound, use Video Volume Booster.
Use the right level tool
Choose by the result you need, not because the tools all mention volume.
| Tool | What you control | Choose it when |
|---|---|---|
| Audio Normalizer | A measured Peak or LUFS target | You need repeatable output rather than a guessed gain change |
| Volume Booster | A direct percentage for a clip or section | You know which audio is too quiet and want manual control |
| Audio Compressor | The finished file size | You need the download to fit a size limit |
Peak and LUFS targets, True Peak, supported formats, sound quality, privacy and honest limitations.
Choose your MP3 and select Loudness Normalization for its overall listening level. Set a LUFS target, choose MP3 as the output and normalize. Compare the original and processed audio, then download the new copy. Your original file is unchanged.
Not in one batch. This tool processes one file at a time, up to 100 MB. To make several songs or recordings more consistent, process each with the same LUFS target and compare the results. Matching peak levels alone does not make tracks sound equally loud.
Follow the requirement from your host, client or distributor first. You can audition -16 LUFS for spoken audio or -14 LUFS for music as starting points. The tool also has -18 and -23 LUFS presets, with custom targets from -24 to -8 LUFS. No single target is right for every platform, recording or channel layout.
A short loud sound can already be near the peak target while most of the recording stays quiet. Peak mode adjusts everything by the same amount. Choose Loudness Normalization when the overall listening level is your priority; large differences within the recording may still need editing.
It does not identify individual speakers or remove noise. It targets the recording's overall level, so one quiet voice beside a loud speaker may still need separate adjustment. Raising the level also raises background noise, and lowering a clipped recording does not repair the distortion already present.
Peak mode applies constant gain. Loudness mode may change dynamics to meet its loudness and True Peak constraints. WAV or FLAC avoids another lossy encoding step; exporting MP3, M4A or OGG uses lossy encoding. Preview before downloading, and verify the exported file when strict delivery limits apply.
Yes. Normalization, previews and downloads are free, with no sign-up. Your file is processed locally in your browser, not uploaded for normalization. The processing engine may download on first use. Keep the tab open until your result is ready.
Choose one file up to 100 MB. Supported inputs include MP3, WAV, M4A, FLAC, AAC, OGG, Opus, AIFF, WMA and AMR. MP4 with an audio track is also accepted, but the result is audio only, not a normalized video. Download as WAV, MP3, M4A, FLAC or OGG. Compatibility and processing time depend on the file and your device.