Normalize Audio Loudness
Too quiet next to other videos, or peaking and distorted? Normalize your audio to the loudness platforms expect: -14 LUFS for YouTube and Spotify, -16 for podcasts.
Your file stays on your device. Nothing is uploaded.
Normalize in three steps
Drop your audio
MP3, WAV, M4A, AAC, FLAC or OGG.
Pick the target
-14 LUFS for most platforms, -16 for podcasts and voice.
Normalize and download
You get the same format back, at 48 kHz.
What LUFS means
Loudness is measured in LUFS (loudness units relative to full scale), which follows how loud people hear audio, not just its peaks. YouTube, Spotify and TikTok turn loud uploads down to around -14 LUFS, so audio mixed louder gains nothing and quieter audio just sounds quiet next to everything else.
Normalizing measures your audio and raises or lowers it to the target, keeping the loudest peaks under -1.5 dB so nothing clips after the platform re-encodes it. -14 LUFS suits YouTube, TikTok, Instagram and music streaming; -16 LUFS is the usual target for podcasts and spoken word (Apple Podcasts recommends it); -23 LUFS is the EBU R128 standard for broadcast TV.
This uses ffmpeg's loudnorm filter in single-pass mode, which evens out the level as it goes. It's ideal for voice and mixed content; for finished music masters, which are already loud and compressed, check the result by ear.
What you get
Platform targets
-14, -16 or -23 LUFS.
No clipping
True peak kept under -1.5 dB.
Same format
An MP3 comes back as an MP3.
Frequently
Asked Questions
What LUFS should I use for YouTube?
-14 LUFS. YouTube turns louder audio down to about that level, and quieter audio isn't turned up.
What's the right loudness for a podcast?
-16 LUFS is the common target for podcasts and spoken word, and what Apple Podcasts recommends.
Is normalizing the same as making it louder?
Not quite: it sets the overall loudness to a target, which can mean turning it down. It also keeps peaks from clipping.
Is my file uploaded?
No. It's processed on your device with ffmpeg running in the browser.