150 BPM Metronome
← All tools150 BPM is close to the ceiling of allegro, which closes at 156, and one small step from vivace. It is also where sixteenth notes hit ten a second — the rate at which most players stop counting a run and start feeling it as a single gesture — and where a lot of punk and hardcore begins. The metronome below is set to 150.
Subdivision and swing
Subdivision clicks are quieter and higher than the beat, so the pulse stays the loudest thing in the bar. Swing applies to eighths and triplets only, and pushes the offbeat of each pair later — 33% lands it on the triplet grid, 50% on a dotted eighth. The downbeat never moves.
Tempo trainer
Trainer off — the tempo stays exactly where you put it.
How to practise at 150 BPM
- Press Start. A beat is 400 milliseconds, and a bar of 4/4 is 1.6 seconds.
- Count in 2 rather than 4 if the phrasing allows it. Above about 140 many players read four fast beats more comfortably as two slower ones with a subdivision.
- Eighths at 150 are 300 a minute. Turn them on for a downstroke or hi-hat reference, and leave swing at zero - swing at this speed reads as a stumble rather than a lilt.
- For a passage in sixteenths, drop to 100 and ramp: start 100, step 5, every 8 bars, stop at 150 is ten steps.
Ten notes a second
At 150 BPM a sixteenth note lasts 100 milliseconds exactly, so a run of sixteenths is ten notes a second. That is a threshold worth knowing about, because it is roughly where conscious note-by-note control ends for most people. Below it you can decide to place a note; above it you are executing a pattern that was decided earlier, and the only thing you can adjust in real time is the shape of the whole gesture.
The practical consequence is that fast passages have to be practised as patterns, not as sequences of decisions. This is the argument for slow practice with a dense click: at 75 BPM the same sixteenths are five a second and every one of them is a placeable event, so the pattern you are building is an even one. Bring it back to 150 and you are executing something that was correct when it was assembled. Assemble it at speed and you are executing whatever unevenness happened to be there.
It is also why 150 is a good tempo to test at rather than to learn at. Play the passage here, listen for the note that consistently arrives against the click rather than with it, and take that pair of notes back down to a tempo where you can do something about it.
Allegro's ceiling and punk's floor
Allegro runs to 156 and vivace opens at 156, so 150 is the last round number that is unambiguously allegro. Above it the vocabulary changes from fast to lively, and the character it implies changes with it — allegro is bright and quick, vivace is animated, and the difference is real even though the numbers barely move.
The other thing that lives here is fast guitar music. Punk and hardcore mostly sit between about 150 and 200, and the reason 150 is the floor rather than the middle is physical: the eighth-note rate at 150 is 300 a minute, which is about as fast as continuous downstrokes stay clean, and the idiom depends on that sound. Above this tempo bands generally switch to alternate picking or to counting the bar in 2, both of which change the feel.
What 150 BPM works out to
Every number below follows from one division: sixty seconds over 150 beats. It is worth knowing the sixteenth-note figure before you decide a passage is playable — that is the rate your hands actually have to move at, not the tempo on the page.
| Note value | Per minute | One lasts |
|---|---|---|
| Quarter note — the beat | 150 | 400 ms |
| Eighth note | 300 | 200 ms |
| Eighth-note triplet | 450 | 133 ms |
| Sixteenth note | 600 | 100 ms |
| Bar of 4/4 | 37.5 | 1600 ms |
Where 150 BPM falls in the Italian markings
150 BPM sits inside one band, Allegro. Overlap is normal and is not a defect of the system: these words were in use for a century and a half before Maelzel's metronome existed, and they describe a character — how the music carries itself — with speed as a consequence. The bands below are the ones the standard reference tables give.
FAQ
- Is 150 BPM allegro or vivace?
- Allegro. The standard bands put allegro at 120 to 156 and vivace at 156 to 176, so 150 is inside the first and short of the second. Six BPM higher and it would be both, which is a good illustration of how little precision these words carry at the boundaries.
- Should I count 150 BPM in 4 or in 2?
- Try both on this page, since changing beats per bar does not stop the click. In 4 you get a fast four with an accent every 1.6 seconds; in 2 you get a half-note pulse at 75 with the quarters as subdivision. Fast music very often reads better in 2, because the phrase lengths are easier to hold and the accent stops arriving so relentlessly.
- Can I still use subdivisions at 150?
- Eighths, yes, at 300 a minute — that is a useful and countable reference. Sixteenths at 150 are 600 clicks a minute, one every 100 milliseconds, which most people hear as a buzz rather than as separate events. If you need sixteenth-level accuracy at this tempo, get it at a slower one and bring it back up.
