Online Metronome

A metronome for practice and rehearsal. Set the tempo in beats per minute from 20 to 300 by typing it, with the slider, with the − and + buttons, or by tapping. Tap tempo averages the gaps between your last eight taps, and a pause of more than two seconds starts a new count.

Choose 1 to 12 beats per bar and a subdivision: quarter notes, eighths, triplets or sixteenths. With the accent on, the first beat of each bar sounds higher, which makes 3/4 and 6/8 easy to tell apart; subdivisions are quieter and lower than the beat. There are three sounds, a click, a beep and a woodblock. The space bar starts and stops it.

The ticks are scheduled on the Web Audio clock rather than fired by a JavaScript timer. A timer alone drifts by tens of milliseconds whenever the tab is in the background or the page is busy; sounds booked ahead on the audio clock play at exact intervals regardless. Bluetooth headphones still add their own delay of roughly 100 to 300 ms, so to play along with other audio a wired connection or speaker is better. Phones in silent mode may not play it at all. Settings are saved in this browser only.

The tempo names shown (Largo, Andante, Allegro and so on) are conventional ranges for reference; their reading varies with the piece and the period.