Loudness units relative to full scale: a measure of how loud a track feels, used by streaming services to even out volumes.

Do the platforms change my track?

Most of them turn louder tracks down to their reference level, so a very loud master may just sound more squashed.

Analyze Free tool

Online tuner

Tune your voice, guitar, bass or any instrument with your microphone.

100% free
Runs in your browser
Instant results
No sign-up

Drop your mix or master WAV gives the most exact peaks · MP3, M4A, OGG and FLAC work too It stays on your device

Reading the file…

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Integrated loudness

–LUFS

How loud the whole track feels

True peak

–dBTP

Loudness range

–LU

Difference between the quiet and loud parts

Short-term max: – LUFS
Momentary max: – LUFS
Sample peak: – dBFS
RMS: – dBFS
Crest factor: – dB
Peak to loudness (PLR): – dB
Stereo correlation: –
Stereo width: – %

Loudness over time

LUFS

Spectrum

Average, 20 Hz – 20 kHz

On streaming services

Reference levels published by each service (they can change). Louder tracks are turned down to that level when normalisation is on.

Spotify -14 LUFS –

YouTube -14 LUFS –

Apple Music -16 LUFS –

Amazon Music -14 LUFS –

Tidal -14 LUFS –

Deezer -15 LUFS –

Integrated, short-term and momentary LUFS
True peak and clipping check
Spectrum and stereo width

Step by step

How to use it

Allow the microphone.
Play or sing one note at a time.
Tune until the needle sits in the middle.

FAQ

Questions

Short answers about this tool.

See every free tool

Is the sound recorded?

No. The microphone is only analysed live in your browser and nothing is stored or sent.

Which reference should I use?

Most music is tuned to A4 = 440 Hz. Change it only if the recording or the band you play with uses another reference.

The note jumps or does not show. Why?

Play one note at a time, close to the microphone, and let it ring. Chords, loud background noise and very quiet notes cannot be read.

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