Audio Normalizer
Even out loudness to LUFS or peak targets with a true-peak limiter.
How to use the Audio Normalizer
- 1Drop an audio file. Its loudness, true peak and loudness range are measured right away.
- 2Choose loudness (LUFS), peak or manual gain, and a target such as −14 LUFS for streaming or −16 LUFS for podcasts.
- 3Compare original and normalized, then export.
About Audio Normalizer
Audio Normalizer measures how loud a recording really is and adjusts it to a target. As soon as a file is loaded it shows the integrated loudness in LUFS, the true peak and the loudness range. You can then normalize audio by loudness to a target such as −14 LUFS for Spotify and YouTube or −16 LUFS for podcasts, by peak level, or by a fixed gain between −24 and +24 dB, which also works as a simple volume booster for quiet files.
A look-ahead limiter prevents clipping when the gain raises the level. Its ceiling is measured in dBTP, so peaks between samples are caught too, and the release time is adjustable. An optional DC offset removal recenters a waveform that sits above or below zero. Before exporting you can switch between the original and the normalized version to hear the difference, then save the result as MP3, M4A, OGG, WAV or FLAC.
Loudness normalization helps podcasters match episodes and guests, musicians prepare tracks for streaming platforms, video creators balance voice-overs, and anyone build a playlist or audiobook from files recorded at different levels. The audio normalizer processes the decoded audio in your browser, so no upload is needed.
Frequently asked questions
What is LUFS?
Loudness Units relative to Full Scale, the loudness measure of ITU-R BS.1770 and EBU R128. Unlike peak level it reflects how loud audio sounds, which is why Spotify, YouTube and Apple Music use it to balance tracks.
Peak or loudness normalization?
Peak normalization only moves the loudest sample to a level and says little about perceived volume. Loudness normalization makes different files sound equally loud, which is what you usually want for podcasts, playlists and uploads.
What does the limiter do?
Raising loudness can push peaks above full scale, which distorts. The look-ahead limiter lowers just those peaks so nothing, including peaks between samples, goes above the ceiling you set.
Which target should I use?
−14 LUFS for Spotify, YouTube and Tidal, −16 LUFS for Apple Music and most podcasts, −19 LUFS for audiobooks, −23 LUFS for European broadcast (EBU R128) and −24 LUFS for US TV (ATSC A/85).
More in Audio Tools
Cut, trim and fade audio files on a zoomable waveform.
Make audio files smaller with the right bitrate, channels and format.
Record your voice with a live level meter, then trim and save it as MP3, WAV and more.