Free Music & Audio Tools
Tools for analysing, separating, editing and understanding your music, all free to use. Everything below runs on your own device unless a tool explicitly says otherwise.
- No cost
- Results in seconds
- Encrypted upload
- No sign-up
AI detection
Run a recording through a classifier trained to spot patterns common in AI-made tracks.
Music analysis
Pull hard numbers — tempo, key, loudness and more — out of any audio file.
Audio Analyzer
Get a full technical read-out of a track: loudness, key, tempo, stereo width and spectral balance.
Open the analyzerKey & BPM Finder
Work out a track's tempo, musical key and Camelot code for harmonic mixing.
Detect key & tempoLoudness Analyzer
Check integrated LUFS, true peak and dynamic range against streaming loudness targets.
Check loudness
Stem separation
Separate vocals from instrumental and hear each part in isolation.
Audio editing
Cut, retime, convert and level out a track before you ship it.
Volume Normalizer
Bring a track to a chosen LUFS target with a safe peak ceiling, then export a WAV.
Set a loudness targetAudio Cutter & Trimmer
Select a region of a track, keep or delete it, and smooth the edges with fades.
Start trimmingTempo & Pitch Changer
Retime a track or shift its key on their own, without the classic pitch-follows-speed effect.
Adjust speed or keySlowed + Reverb Maker
Stretch a song to a slower tempo and wrap it in reverb for the ambient remix look.
Build a slowed editAudio Converter
Switch a file between MP3 and WAV and adjust sample rate or channel layout.
Convert a file
Creator tools
Practical calculators for the business side of releasing music.
How these tools work
Every analysis tool here decodes your file with the Web Audio API and does its measuring in a background worker inside your browser. Loudness follows ITU-R BS.1770 with the EBU R128 gating rules, tempo comes from a spectral-flux onset envelope, and key comes from a chromagram correlated against the Krumhansl-Schmuckler profiles. These are standard, documented methods, and each tool's page explains where its estimate can go wrong.
The AI Music Detector is the exception: its classification runs server-side, and the detector page discloses that before you opt in. We never call a tool private when it isn't.