Take your finished content live with Upstream.
Start streaming freeMP3 Normalizer
Even out the loudness of an MP3 to a standard level, so tracks and episodes play at the same volume.
- No sign-up
- Free download
- Files stay on your device
How to normalize an MP3
- 1
Add your audio
Drop in an MP3, WAV, M4A, AAC, OGG and FLAC file.
- 2
Pick the target loudness
Choose the loudness standard for where the audio will play.
- 3
Download the normalized MP3
Listen back, then save the file.
Why use this MP3 normalizer
Private by design
The file is processed inside your browser. It is never uploaded to Upstream or anyone else.
Free, with no watermark
No account, no trial and nothing stamped on your audio. Use it as often as you like.
Fast on your own device
There is no upload or queue. Processing starts right away and uses your computer, not a server.
Works with common formats
Start from MP3, WAV, M4A, AAC, OGG, FLAC files and download an MP3 that plays everywhere.
Popular uses
- Level out podcast or interview clips.
- Normalize ads, promos, and prerecorded intros.
- Make a set of audio assets feel more consistent before streaming.
FAQ
MP3 Normalizer FAQ
Files, privacy, formats and limits.
More free audio tools
All free tools- Video to MP3 Converter Pull clean audio from a video without uploading the original footage.
- Extract Audio from Video Save the audio track of any video, in its original quality or as MP3, WAV or M4A.
- Audio Converter Convert audio to MP3, WAV, M4A, OGG or FLAC without uploading it.
- Audio Noise Reducer Apply a fast browser-side cleanup pass to steady background noise.
- Silence Remover Tighten spoken-word recordings by stripping dead air and long pauses.
- Video Trimmer Cut a clip down to the exact segment you want without uploading it anywhere.
- Video Cropper Crop a video to the frame you need for landscape, vertical, square, or portrait publishing.
- Remove Audio from Video Strip the audio track out of a video to create a clean silent asset for live production.
From quick prep to full streaming workflows
These free utilities cover the small jobs around content creation. For continuous channels and team production, Upstream also supports 24/7 live streaming, pre-recorded live streams, multistreaming, and Live Studio broadcasts.
For this tool, the closest next step is Live Studio, so that workflow appears first below.
Produce browser-based live shows with guests.
Invite speakers, share screens, manage scenes, and add branded overlays for podcasts, webinars, interviews, and launches.
Explore Live Studio
Run a 24/7 live stream from your videos.
Upload once, build a playlist, and let Upstream run continuous live playout without OBS, a VPS, or an always-on computer.
Explore 24/7 streaming
Schedule finished videos as live events.
Turn recordings into scheduled live streams, premieres, loops, and recurring broadcasts from the same cloud workflow.
Explore pre-recorded streaming
Send one feed to every platform that matters.
Go live to YouTube, Twitch, Kick, Facebook, Rumble, and custom RTMP without making your upload connection carry every copy.
Explore multistreaming