AudioKit's BPM detector lets you instantly find the exact tempo of any song online for free. Also known as a tap tempo or beat counter, our tool analyzes your audio file and returns the precise beats per minute in seconds. This is essential for DJs, music producers, and dancers who need to match tempos. After finding your song's BPM, you can adjust its speed without changing pitch using our tempo changer, or sync it to a loop using our audio looper. Works with MP3, WAV, OGG, and more. No software download needed.