audio station
Normalize Audio Loudness Online
The audio normalizer is intended to measure loudness and apply an EBU R128 adjustment. Review the current output limitation below before relying on this workflow.
Active conversion station
Normalize Audio
Normalize audio levels using EBU R128
How to check an audio normalization result
Prepare the source
Select an audio file and keep the original.
Review the settings
Review the current service limitation before starting a request.
Check the result
If processing succeeds, listen to the result and verify that the file plays correctly.
Supported formats and limitations
Input: MP3, WAV, FLAC, AAC, OGG. Output: Audio output currently unreliable. The current service has an output codec mismatch and may fail to return a playable file. Its displayed loudness and format settings are not currently applied by the endpoint. This requires a separate conversion fix.
Processing runs on the server after you select Start Conversion. The interface accepts files up to 500 MB; service and connection limits can be lower. No installation or account is required. Read our file processing privacy policy.
Why Use ConvertFast's Normalize Audio?
- Uses two-pass loudness analysis in the processing implementation.
- Keeps the original recording available for comparison.
Frequently Asked Questions
Why can audio normalization fail?
The current processing endpoint requests an output format that does not match its encoder. Until this is corrected, successful normalization is not guaranteed.
Can I rely on the displayed target loudness?
No. The endpoint currently uses its default targets rather than the displayed settings. Verify any returned audio independently.
Ready? It's Free.
No account required. Input rules appear before you upload.
Open Normalize Audio Tool