Free LUFS Analyzer – Check Audio Loudness Online
Analyze your audio in seconds with our free LUFS Analyzer. Measure Integrated LUFS, True Peak, RMS, Dynamic Range, Stereo Width, and Clipping. Instantly check if your song is ready for Spotify, Apple Music, YouTube Music, Amazon Music, and other streaming platforms.
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Supported formats: WAV • MP3 • FLAC • M4A
Up to 5 minutes · 80 MB · Analyzed in your browser, never uploaded
What is LUFS?
LUFS (Loudness Units relative to Full Scale) is the industry standard for measuring perceived loudness. Unlike peak meters, LUFS estimates how loud music actually sounds to listeners.
Streaming platforms use loudness normalization to create a more consistent listening experience. If a song is significantly louder than the platform's playback target, the service may reduce its playback volume automatically.
Checking LUFS before releasing music helps you understand how your master is likely to behave on streaming platforms.
Why Measure LUFS?
Measuring LUFS before releasing your music helps you:
- ✓Compare loudness with commercial releases.
- ✓Detect overly loud masters.
- ✓Reduce the risk of excessive limiting.
- ✓Maintain better dynamics.
- ✓Prepare music for streaming services.
- ✓Improve consistency across albums and EPs.
What Our LUFS Analyzer Measures
Integrated LUFS
Measures the overall loudness of the entire track.
Short-term LUFS
Measures loudness over a rolling 3-second window.
Momentary LUFS
Measures loudness over a 400 ms window.
True Peak
Detects peaks that may occur during digital-to-analog conversion.
RMS
Shows the average signal level.
Dynamic Range
Measures how much the loudest and quietest parts of your music differ.
Stereo Width
Shows how wide your stereo image is.
Clipping Detection
Detects digital clipping caused by samples reaching full scale.
Typical Streaming Loudness
| Platform | Typical Playback Target |
|---|---|
| Spotify | Around -14 LUFS |
| Apple Music | Around -16 LUFS |
| YouTube Music | Around -14 LUFS |
| Amazon Music | Around -14 LUFS |
| Deezer | Around -14 LUFS |
These are common playback normalization targets and may change over time.
How to Improve Your LUFS
- ✓Use compression carefully.
- ✓Avoid over-limiting your master.
- ✓Leave sufficient headroom.
- ✓Monitor True Peak.
- ✓Compare your mix with professional reference tracks.
- ✓Test your song on headphones, speakers, and mobile devices.
Why Choose Our Free LUFS Analyzer?
- ✓Completely free
- ✓Works directly in your browser
- ✓No software installation
- ✓Supports WAV, MP3, FLAC, and M4A
- ✓Fast audio analysis
- ✓Privacy-friendly (analysis happens locally in your browser)
- ✓Designed for musicians, producers, and audio engineers
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Frequently Asked Questions
Quick answers about LUFS, True Peak and how this analyzer works.
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