Free tools for musicians
Each tool answers one question about your track and tells you what to do next. Most of them work without an account. Files stay on our server only while they are processed.
LUFS meter
Free LUFS meter online for WAV, MP3, FLAC and AAC files: integrated LUFS, true peak, momentary max, and a Spotify and YouTube check.
Streaming loudness penalty
See how much Spotify, YouTube, Apple Music and other platforms will turn your track down after loudness normalization. Free check with a before-and-after preview.
Mastering calculator
Free LUFS and true peak calculator: enter loudness and peak, pick Spotify, Apple Music, YouTube or club, and see the gain change and the resulting peak.
AI track check
Upload a track and get a verdict with concrete recommendations: loudness, true peak, dynamics and stereo, measured on the file.
Key and BPM finder
Find the key, the Camelot code and the BPM of a track from its file, with a confidence score. Free for WAV, MP3 and FLAC.
BPM counter
Find the BPM by tapping. Tap the button or press the space bar on each beat; after four taps you get the tempo. Free, no sign-up.
Key changer
Change the key of a song or instrumental online: minus 6 to plus 6 semitones, tempo kept, MP3 320 or WAV.
Audio converter
Convert audio online: WAV to MP3 320, WAV 16-bit or 24-bit, FLAC. Dithered when the bit depth drops, with the LUFS and true peak of the result.
Audio cutter
Trim a song online for free: pick the start and the end, add a one-second fade in or out, and download WAV or MP3. No sign-up.
Ear trainer
Train your ears for EQ: hear a boost on one secret frequency and name the band. A new five-round challenge every day. Free, no sign-up.
Vocal remover
Remove vocals from a song online and get the instrumental and the a cappella as WAV files. Free for accounts, with a daily limit.
Stem splitter
Split a song into four stems online: vocals, drums, bass and other instruments as WAV files. Free with an account.
Remove drums and bass
Remove drums and bass from a song online: split it into four WAV stems and mix only the ones you want. Free with an account.
Audio restoration
Clean up old or rough recordings before mastering: tape hiss, wow and flutter, vinyl clicks, mains hum and room echo.
AI artifact cleanup
Remove AI artifacts from a Suno track: generator marks above 15 kHz, block seams and fixed spectral peaks. Loudness stays the same and it costs no credit.
Tempo fix for AI tracks
Fix the drifting tempo of an AI track: one even BPM, pitch kept, and the first strong beat on the start of a bar. For DAWs.
De-clipper
Check a track for clipped peaks for free. Mastering rebuilds short clipped peaks. WAV, MP3, FLAC, M4A or OGG up to 80 MB.
Restore dynamics
Bring back the punch of a squashed track, including AI-generated Suno and Udio exports. Runs in the browser, no DAW needed.
Reference mastering
Move your track toward the tone and loudness of a song you like, in the Echoteka lab.
Podcast mastering
Clean a voice recording with a speech preset: it clears rumble, levels the voice and targets -16 LUFS, the loudness recommended for spoken shows.
Album mastering
Master an album in one go: the loudest track hits your target and the quieter ones keep their place. One style and one loudness for the whole album.
Style preview
Compare mastering styles: a 24-second preview of your track in 2 to 6 styles, free up to 6 times a day.
What these tools do and do not do
The tools measure and advise. They do not change the sound of your track. When you want the change itself, the mastering lab applies it, and the preview there lets you compare styles before you commit.
Free, account and credit tools
Tools marked FREE need no account. Tools marked ACCOUNT are free once you have a free account. Tools marked 1 CREDIT use the same credits as a full master. Paid credit packs are on sale on the pricing page.
Full mastering: 1 free master a day
Target loudness, true peak at or below minus 1 dBTP, and a before-and-after report. No account is needed for the first master of the day.
Open the lab