BPM Finder from File

Frequently asked questions

Everything you need to know about this tool.

• How does BPM detection work?

  The file is analysed in the browser with the Web Audio API plus an onset detection algorithm (energy analysis per frequency band on transients). For best results, use uncompressed files (WAV) or high-bitrate MP3 (320kbps).

• Does it work with all music genres?

  It works best with music featuring prominent drums (hip-hop, trap, electronic, rock). For slow or ambient music with few percussion elements, the algorithm may be less accurate. The tool always shows a confidence score for the result.

• Is the audio file uploaded to a server?

  No, the analysis happens entirely in the browser via the Web Audio API. The file never leaves your device. This is a deliberate choice to protect the privacy of artists with unreleased material.

• Does it work for finding the BPM of an already released song?

  Yes, but we also recommend sites like Tunebat or Songbpm for tracks published on Spotify (they have access to labels' BPM metadata). Our tool is more useful for sampled beats and unreleased productions.

• What is the maximum file size?

  Up to 50MB, to avoid overloading the browser's memory. For longer tracks, upload only the section you want to analyse (e.g. the first 30 seconds with the drum section). The BPM estimated from the first 30 seconds is representative of the whole track.