DollarWise

BPM Finder — Find a Song's Tempo Free (Tap or Upload)

October 12, 2026 · 2 min read · By the DollarWise team

How it works

Two ways to find a tempo. Tap along with the beat and this tool averages your taps into an exact BPM — or upload a song and let it analyze the audio: it decodes the file in your browser, tracks the energy pulses where the beats hit, and measures how often that pattern repeats. Either way, nothing is uploaded to a server.

BPM Finder

Find any song's tempo — tap along, or drop in the file and get an instant estimate.

100% Free Forever No Sign-up No Credit Card Private — files never leave your browser Unlimited Use

1 Tap the tempo

Tap the button in time with the beat — at least twice. The more taps, the steadier the average.

2 Or analyze a song file

The file is decoded and analyzed locally in your browser — it is never uploaded anywhere.

3 Your tempo

Tempo result

🎉 Free forever. No sign-up. No credit card. No limits.

Tap or analyze as many songs as you like — everything runs in your browser, nothing leaves your device.

Everyday uses

  • DJ sets and mixes: sort tracks by tempo so transitions blend smoothly.
  • Workout playlists: build running or cycling playlists in the 120–140 BPM sweet spot.
  • Learning an instrument: find a song’s tempo, then set a metronome to match it.
  • Video editing: cut clips on the beat by knowing the track’s exact tempo first.

Frequently asked questions

How does the upload analysis find the tempo? It decodes the audio in your browser, builds an “onset envelope” — a curve of where the energy suddenly jumps, which is where beats land — then autocorrelates that curve to find the repeating interval that best fits the 40–200 BPM range. The result is a good estimate, not a laboratory measurement.

Why might the estimate be half or double the real tempo? Some songs pulse hardest on every other beat (or on eighth notes), so the clearest pattern can be the half-time or double-time one. The result suggests the alternative — and the tap tool takes ten seconds to confirm which is right.

Is my song uploaded to a server? No. Decoding and analysis happen entirely in your browser with the Web Audio API. You can even go offline after the page loads and the analysis still works.