Audio Normalizer
Automatically adjust an audio clip's volume to hit a standard target loudness — useful for making a batch of recordings sound consistently loud without manual guesswork — then download the normalized file.
Your audio file is processed on your device and is never uploaded to our servers.
Only use this tool with files you own or have the right to process.
Normalizing adjusts the perceived loudness of the whole clip to match a target standard, unlike a manual volume change which multiplies every sample by the same fixed ratio.
Drag an audio file here or choose one
MP3, WAV, M4A, or OGG
What this tool does
Brings an audio file to a target level you choose, raising what is quiet and lowering what is loud so the file is consistent throughout.
When to use it
- Recordings from different sources at wildly different levels.
- A podcast episode where speakers have very different volumes.
- A library of files you want to play through without reaching for the volume each time.
- A recording you are preparing for publication at a standard level.
How to use it
- Put an audio file on the drop area or choose it.
- Choose the "Target level".
- Run the normalisation and download the file.
A practical example
Input
A conversation recording where one speaker is noticeably quieter than the other.
Output
The same recording at a more consistent level with both speakers clearly audible.
Limitations
- Normalising raises background noise along with the useful signal in quiet passages.
- It cannot repair a recording that is already distorted; distortion is not removed by raising or lowering a level.
- The difference from the Audio Volume Changer is that the latter applies a fixed amount you specify, while this targets a final level computed from the file itself.
Privacy and processing
The level is measured and corrected on your device, with no upload at any point.
Technical notes
- The level is measured from the file and the necessary adjustment applied to reach the target, rather than applying a fixed amount blindly.