A recording where one person is barely audible and the next makes you jump?
This brings the whole file to the same loudness streaming services use, so you can stop riding the volume knob. Audio or video in, MP3 out.
By ShinobiTools Team · Last updated: September 2026
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Turning up the volume multiplies everything, including the loud bits — which then distort. Normalizing measures how loud the recording actually feels over its whole length, in LUFS (the method behind the EBU R128 standard, and the unit Spotify and YouTube use to level their catalogues), and adjusts towards a target, pulling quiet passages up without letting the peaks clip. Just want it louder, use make it louder.
The target here is -16 LUFS, the usual level for podcasts and streaming. It's measured over the whole file, not at a single peak, so a quiet intro and a loud chorus both get pulled toward it. That is also the difference with equalizing (to equalize audio is to reshape frequencies): normalizing changes the overall level, an equalizer reshapes the balance between low and high frequencies.
Audacity, Premiere Pro, DaVinci Resolve, Final Cut Pro, GarageBand and CapCut all have their own normalize or loudness option, and if you're already editing there, use it: you can pick the target yourself. This page is for when you just want the file levelled without opening an editor, and it works in a phone's browser too. The setting is fixed at -16 LUFS; there is nothing to configure.
It's a loudness normalizer, not a volume knob: no need to ride the volume on every track. As a volume normalizer it targets the whole file's loudness rather than a single peak, and as a sound normalizer it treats speech and music the same. Every result comes back as MP3, so it's also an MP3 normalizer, an MP3 volume normalizer for playlists and an audio file normalizer for video soundtracks. Think of it as an audio normalizer online, or a leveler audio engineers would recognise, not a mixer: it evens quiet and loud sections into one steady loudness. It isn't an audio balancer in the left-right sense, and it doesn't touch the stereo image.
Normalizing raises the quiet parts and everything in them, hiss included. If the result is loud but unpleasant, the problem was the recording, not the volume — clean the noise out first with CleanGrab and then normalize.
It also can't enhance a voice or fix a recording that's distorted: once a peak has clipped, levelling the file doesn't bring the lost detail back.
Your file is uploaded to our own machine, processed there, and deleted immediately afterwards. Limits: 1200 MB and 20 minutes per audio file on the free tier.
Need one specific section louder or quieter rather than the whole track evened out? Change audio volume gives you exact control. Want it to fade in or out instead? Fade audio does that.
It brings the whole file to a standard loudness, so quiet and loud parts sit closer together and nothing distorts.
No. A volume booster just multiplies everything, which can distort the loud parts; normalizing brings the whole file to one target loudness and controls the peaks. Want a plain audio volume booster? Change audio volume does that.
EBU R128 at -16 LUFS, which is widely accepted for podcasts and streaming platforms. Broadcast television in Europe uses -23 LUFS.
Yes: the soundtrack is levelled and comes back as an MP3; to keep the picture, put the MP3 back under the video in your editor.
Yes. No account, no watermark, no daily limit.
No, and it will make existing noise more audible. Clean the file first, then normalize.
Drop the audio or video file onto this page and the normalized version downloads as an MP3. Nothing to install, no account and no watermark; the normalizing runs on our server.
Almost. The level is adjusted and the result is saved as a high-quality MP3; a small re-encoding loss is the only cost, and in normal listening it's inaudible. Very dynamic recordings get gently evened out, which is the point of the exercise.
YouTube turns down videos louder than about -14 LUFS and leaves quieter ones alone. A file at -16 LUFS plays as it is, just slightly quieter than the loudest uploads, so it's a safe choice. The result here is an MP3, so put it back under your video in your editor.
Yes: open this page in Safari or Chrome on your phone, pick the file and download the normalized MP3, at the same -16 LUFS as on a computer, without any app.
Yes, one at a time: run each file through this page, whether it came from a recorder, a podcast or a video soundtrack, and they all land at -16 LUFS, so a playlist or a set of episodes plays at the same volume.
Adjusting a whole recording toward one target loudness, so quiet and loud recordings play at a similar level, rather than just turning the volume up or down. In broadcast it means a fixed loudness spec measured in LUFS.
Audacity has two effects: Normalize, which sets the peak level, and Loudness Normalization, which targets LUFS like this page. In DaVinci Resolve, right-click the clip and pick Normalize Audio Levels; in Ableton, tick Normalize in the Export Audio dialog. Use this page if you only need the file levelled, without an editor.
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