Free Online BPM Finder & Key Detector
Analyze BPM (tempo) and musical key of any audio file instantly
100% free. No registration required. All processing happens in your browser.
Why Use Our BPM Finder?
Accurate BPM Detection
Detect the tempo (BPM) of your music tracks with 99% accuracy using our advanced algorithm. Perfect for DJs and music producers.
Musical Key Detection
Find the musical key with Camelot Wheel and Open Key notation for perfect harmonic mixing. Essential for professional DJ sets.
Privacy First
100% client-side processing. Your audio files never leave your device. No uploads, no tracking, complete privacy guaranteed.
How to Use the BPM Finder
Upload Your Audio File
Click the upload area or drag and drop your music file. Supports MP3, WAV, M4A, FLAC, and OGG formats up to 100MB.
Automatic Analysis
Our BPM finder automatically analyzes your audio file and detects the tempo (BPM) and musical key within seconds.
View Results
Get instant results showing BPM, musical key (major/minor), Camelot Wheel code, and Open Key notation. Export results in JSON or CSV format.
Supported Audio Formats
Most common format
Uncompressed audio
Lossless compression
AAC audio
Open format
100MB