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40 BPM metronome

Set to 40 BPM (Largo). Press Start — no sign-up. You can change the meter, accents and subdivisions below.

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BPM — Largo

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40 BPM in milliseconds

At 40 BPM one beat lasts 1,500.0 ms, which is 0.67 beats per second. One bar of 4/4 takes 6 seconds.

Largo usually means about 40–59 BPM.

Note lengths at 40 BPM (quarter note = 1 beat), in milliseconds — useful for delay and reverb times.
Note Straight Dotted Triplet
Whole 6,000.0 9,000.0 4,000.0
Half 3,000.0 4,500.0 2,000.0
Quarter 1,500.0 2,250.0 1,000.0
Eighth 750.0 1,125.0 500.0
16th 375.0 562.5 250.0
32nd 187.5 281.3 125.0

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