BPM and Key Finder
BPM and Key Finder
Upload any audio track and instantly detect its BPM and musical key. 100% free, private, and in-browser. Powered by professional-grade audio analysis — no sign-up required.
Drop your audio file here
or click to browse
MP3 · WAV · FLAC · AAC · OGG · M4A · up to 100 MB
Initializing…
Analysis Complete
How to Use the BPM and Key Finder
Upload Your Track
Drag and drop any audio file or click to browse. Supports MP3, WAV, FLAC, AAC, OGG, M4A up to 100 MB.
In-Browser Analysis
Your audio is analysed entirely in your browser using pure JavaScript. No server upload — your files never leave your device.
Get BPM & Key
Instantly see the BPM, musical key (e.g. A Minor, C Major), Camelot notation, and confidence scores for each result.
Why BPM and Musical Key Matter
For DJs: Harmonic Mixing
Knowing the BPM and key of every track lets you craft seamless, harmonic transitions. When two songs share compatible Camelot keys, they blend musically. Use our BPM finder to match tempo and the key finder to ensure harmonic compatibility across your entire set.
Pre-tag your tracks before importing into Rekordbox, Serato, or Traktor — our free tool saves hours of manual detection.
For Producers: Sampling & Ghost Tracks
When sampling, remixing, or purchasing ghost production tracks, knowing the original key and BPM is essential. It tells you exactly how to pitch samples and write melodies that sit perfectly with existing audio.
Instantly verify the key and BPM of any track from The Ghost Production catalogue before building your project around it. Need a track in a specific key? Our custom production services include original tracks, remixes, co-production, mixing, and mastering.
Frequently Asked Questions
BPM stands for Beats Per Minute — it measures how fast a song is. Higher BPM = faster track. Common BPM ranges by genre:
- Hip-Hop / Trap: 70–100 BPM
- Deep House: 120–125 BPM
- Tech House: 125–135 BPM
- Techno: 130–150 BPM
- Trance: 135–145 BPM
- Hardstyle: 150–160 BPM
- Drum & Bass: 170–180 BPM
The musical key defines the harmonic foundation of a song — the set of notes and chords it is built on. Keys are major (brighter, more uplifting) or minor (darker, more emotional). There are 24 possible keys total.
The Camelot wheel assigns each key a number (1–12) and letter (A = minor, B = major). Harmonic mixing rules: same number A↔B mixes harmonically; ±1 number moves around the wheel; +7 gives an energy boost.
Yes — 100% free, no sign-up, no limits. Analyse as many tracks as you like at no cost.
No. All analysis runs entirely in your browser using pure JavaScript. Your audio files never leave your device — complete privacy guaranteed.
MP3, WAV, FLAC, AAC (.m4a), OGG — up to 100 MB per file.
The tool uses professional-grade algorithms: energy-onset autocorrelation for BPM and FFT chroma analysis with Krumhansl–Kessler profiles for key detection. Accuracy is very high for music with clear patterns. Each result includes a confidence score. Use a full-length, high-quality file for best results.
Exclusive Tracks & Custom Music Production
Whether you need a release-ready track in the perfect key and BPM, or a fully custom production from scratch, The Ghost Production's studio team has you covered.
Buy Ghost-Produced Tracks
Exclusive, professionally produced & mastered tracks ready to release under your name. Each track includes full BPM and key metadata. Browse by genre — House, Techno, Trance, D&B, and more.
Browse Tracks →Custom Production Services
Original tracks, co-production, remixes, DJ edits, mixing & mastering — all to your exact brief. Trusted by artists and labels worldwide. Fully confidential.
Explore Services →