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About this tool
Tap along to any song to find its BPM instantly, with tempo markings, a steadiness score and genre references.
A tap tempo counter works out a song's beats per minute from the timing of your own taps: BPM = 60000 divided by the average number of milliseconds between your last 8 taps, timed with the browser's high-resolution clock. Tap the pad or press any key along with the music and you get the live tempo to one decimal, the classical tempo marking for that speed, a steadiness score, and the nearest common set tempo. It is for DJs matching tracks, musicians setting a metronome, and anyone who needs a number for a track that does not list one.
Open BPM Tap Tempo Counter on AltFTool — it loads instantly in your browser.
Click the round Tap pad, or press any key, in time with the music. Two taps give a first reading, and the take resets itself after a 2.5 second pause.
Keep tapping. The big number is the rolling average of your last 8 taps to one decimal place, with the tempo marking beside it (Largo below 60 through Presto at 176+), plus Taps counted, Average BPM (whole take) and a Steadiness score where 100% means perfectly even tapping.
Read the Nearest whole and Nearest common chips for the closest club tempo, watch the Genre BPM reference table for rows flagged In range, then press Copy BPM to copy the reading as text like 128.0 BPM, or Reset to clear the take.
The reading tracks the last 8 taps rather than your whole take, so it follows a tempo you are still finding instead of being dragged down by your first clumsy taps.
A steadiness percentage derived from the standard deviation of your tap intervals shows whether the number is trustworthy — 100% means perfectly even taps.
Maps the result onto classical markings from Largo to Presto and highlights the genres whose typical range it falls inside, from Hip-hop at 85–95 to Drum & Bass at 170–180.
Two taps give a first reading, but tap at least eight — the rolling average is taken over the last 8 intervals, so eight taps is where the number stops jumping. Stop for 2.5 seconds and the count clears itself so your next take starts fresh.
By dividing 60000 milliseconds by the average gap between taps. If your taps average 500 ms apart the tempo is 120 BPM; at 469 ms it is about 128 BPM. Timing uses performance.now() rather than the system clock, so it is not affected by clock adjustments.
Because you are tapping in half time or double time. Tempo is ambiguous by a factor of two, so a track you hear as 87 BPM may be notated at 174 — simply halve or double the reading to match the kick drum, and check it against the common tempos shown, such as 120, 128, 140 and 174 BPM.
They are the traditional Italian tempo names mapped to BPM bands: Largo below 60, Adagio 60–76, Andante 76–108, Moderato 108–120, Allegro 120–156, Vivace 156–176 and Presto 176 and above. The tool labels your tapped tempo with whichever band it falls into.