All free music tools
Seven tools run entirely in your browser — those files never leave your device. AI stem tools upload your file once and delete it immediately after processing. No sign-up, no watermarks, no queues. Local tools accept files up to 50MB; AI stem tools up to 20MB with 3 free songs per day, on desktop and mobile.
Analyze4
BPM FinderFind the BPM (tempo) of any song instantly in your browser. Free, private, and accurate to ±2 BPM — no upload, no sign-up.DJs beatmatch with it, producers time-stretch samples into a project, fitness coaches build cadence-accurate playlists, and dancers count choreography. Drop any audio file — MP3, WAV, FLAC and more — and the tempo is detected in seconds, locally on your device. Ambiguous halftime grooves get one-click half/double correction.LocalKey FinderDetect the musical key and scale of any track in seconds. Free browser-based key finder for DJs, producers, and musicians.DJs plan harmonic mixes with the Camelot code it returns; musicians pick keys for covers and arrangements; karaoke singers find comfortable songs before the night starts. Detection uses the Krumhansl-Schmuckler algorithm with a confidence rating, so you always know when to double-check by ear.LocalSong AnalyzerAnalyze any song's BPM and key in one pass — plus loudness and spectrum. Free combined BPM and key finder online, fast and private.One upload, full report: BPM, key with Camelot code, integrated LUFS loudness, true peak, and a 64-band spectrum. Producers benchmark their mixes against commercial loudness targets, DJs export JSON for playlist databases, and engineers get a repeatable reference check — all without installing anything.LocalTap TempoTap to find any song's BPM — free online tap tempo counter. Click or press space to measure tempo instantly. No upload, no sign-up.No file, no upload — tap the pad (or press spacebar) along with any music playing around you: the radio, a DJ set, a track on Spotify, a live drummer. The counter averages your last eight tap intervals into a steady BPM reading, which makes it the fastest way to answer 'what tempo is this?' when you don't have the audio file.Local
Process3
Audio Speed ChangerChange audio speed online without changing pitch. Speed up or slow down any song in your browser — free, fast, and private.Musicians slow difficult solos to 0.75× to learn them note-for-note, transcribers catch fast passages, DJs pre-align tracks for easier beatmatching, and runners nudge songs to match their exact stride cadence — with pitch preserved so the music stays in key, or disabled for the classic vinyl-slowdown effect.LocalPitch Shifter & ChangerChange the pitch of any song up or down in semitones without changing tempo. Free online pitch changer and pitch shifter — transpose audio in your browser.Singers transpose songs into their comfortable range without changing tempo, producers move samples into a project's key, and DJs convert tracks between keys for smoother harmonic transitions. Works in semitones from -12 to +12 with a phase-vocoder pipeline that keeps duration and tempo exactly intact.Local8D Audio ConverterConvert any song to immersive 8D audio online. Free 8D audio converter with spatial rotation — works right in your browser.Content creators turn ordinary tracks into spatial '8D' versions that orbit the listener's head — the effect behind billions of streams on headphones. HRTF binaural panning, adjustable rotation speed, and room reverb render offline to a WAV you can post anywhere. Headphones required; the physics insists.Local
AI Cloud6
Vocal RemoverRemove vocals from any song with AI. Free, no sign-up, 3 songs a day — uploads auto-deleted in 24h. Create instrumentals and karaoke tracks instantly.AI CloudStem SplitterSplit any song into vocals, drums, bass, and other stems with AI. Free, no sign-up, 3 songs a day, uploads auto-deleted in 24h. Isolate stems for remixes.AI CloudAcapella ExtractorExtract clean acapella vocals from any song with AI. Free online acapella extractor — studio-quality isolation in seconds.AI CloudInstrumental MakerTurn any song into a pure instrumental or karaoke backing track with AI. Remove vocals and keep the beat — free online instrumental maker.AI CloudAI Music Video GeneratorUpload a song, get a music video. Our AI music video generator turns audio into synchronized visuals — beat-reactive, key-aware, made from your track.SoonAI Music GeneratorGenerate full songs from a text prompt with AI. Free AI music generator with vocals — create music in any style in seconds.AI Cloud
Which tool should you use?
Pick by what you're trying to do — most workflows combine two or three tools:
| You are… | Start with | Why |
|---|---|---|
| DJ preparing a set | BPM Finder + Key Finder + Pitch Shifter | Measure the files you actually carry, plan harmonic transitions with Camelot codes, and transpose the one track that fights your mix. |
| Producer working with samples | Song Analyzer + Pitch Shifter + Speed Changer | Check source tempo and key before importing, transpose samples into the project key, and pre-stretch loops to the right length. |
| Musician learning songs | Speed Changer + Key Finder | Slow solos down to 0.75× with pitch preserved, confirm the song's key, and loop the difficult sections until they're muscle memory. |
| Runner / fitness coach | BPM Finder + Speed Changer | Match playlist tempo to stride cadence, verify database numbers that are often rounded, and nudge near-miss tracks to your exact BPM. |
| Content creator | 8D Audio Converter + Song Analyzer | Turn tracks into spatial versions that stand out on headphones, and check loudness so your audio sits right on every platform. |
Prefer a walkthrough?
The blog has step-by-step guides: finding a song's BPM five ways, detecting musical key, building cadence-matched running playlists, and making 8D audio from scratch.
Coming soon
AI-powered tools currently in development:
- AI Music Video Generator