Detect BPM & Key
in Seconds
Drop any track or demo and instantly get tempo (BPM) + musical key so you can produce faster, DJ smarter, and finish more music.
- Works with WAV, MP3, FLAC, AIFF, M4A, AAC, OGG - drag & drop or browse
- Built for producers, artists, DJs & creators
- 100% private - audio never leaves your browser
Analyze
BPM & Key Detection
Drop audio here
MP3, WAV, FLAC, AIFF, M4A, AAC, OGG
Used by creators who don't want guesswork.
Stop tapping tempo. Stop "pretty sure it's in A minor." Get clarity and keep moving.
How it Works
Three quick steps to detect tempo and key. No uploads, no servers, fully private in your browser.
What You'll See in Your Results
Everything Cryo Mix BPM & Key Detection gives you, in plain English - all analysed locally in your browser.
Tempo, locked in seconds
Get an exact BPM number
Stop tapping along to figure out tempo. The analyzer reads the waveform and gives you a clean BPM you can drop straight into your DAW project tempo.
Great for remixes and edits
Match new ideas to the original feel, or warp tracks to a target tempo without guessing.
Built for Producers, DJs, Singers and Educators
Whether you're producing tracks, prepping a DJ set, recording vocals or teaching the next wave, BPM and key are the first two questions in almost every session - this gets them out of the way fast.
SetyourDAWtempoinstantly,findtheright808andbassnotes,andpicksamplesthatactuallysittogetherinthesamekey.Lessguesswork,moreflow.
Re-recordconfidentlyintherightkey,shareaccuratesessioninfowithcollaborators,andavoidthe"whydoesthishookfeeloff?"momentsbeforetheyhappen.
Plantransitionsandmashupsaroundtempoandkeycompatibility.Prepeditswithoutguessing,buildsetsthatflow,andfindtracksthatmixsmoothly.
UseBPMandkeytoteachrhythm,harmonyandsongstructure.Exploretempoandkeychoicesinrealsongsandlearntohearwhatproducersactuallydo.
Used by producers, DJs, singers, engineers and educators in studios, bedrooms, classrooms and clubs all over the world.
100% private. Your audio never leaves your device.
We built this tool to run entirely in your browser - no uploads, no servers, no exceptions.
Runs in your browser
All analysis happens on your device. The audio never leaves your machine.
No uploads, ever
We can't see, store or access your files. There is nothing on a server to leak.
Nothing to delete later
Your audio stays on your machine the whole time. Close the tab and it is gone.
From "What key is this?" to "This is release-ready."
BPM and key are the first two questions in almost every session. When you're ready for the next step, Cryo Mix helps you mix + master with speed by default - and control when it counts.
BPM & Key Detection: Common Questions
Answers to common questions about Cryo Mix BPM & Key Detection and how it works.
It's highly reliable for most modern music, but some tracks (live recordings, heavy swing, key changes, dense harmony) can be ambiguous. Use results as a fast starting point - then trust your ears.
Need more info?
Check out our Help Center