45 BPM in numbers
| One beat (quarter note) | 1333.3 ms |
| Eighth note | 666.7 ms |
| Dotted eighth | 1000 ms |
| Sixteenth note | 333.3 ms |
| One bar of 4/4 | 5.33 s |
| Beats per second | 0.75 |
| Bars of 4/4 in one minute | 11.25 |
The classical tempo marking for 45 BPM is Largo (see the tempo markings chart). 45 BPM isn't the home tempo of any one big genre, which makes it a good practice tempo with no style attached. Counted in double-time it's 90 BPM, the pace of boom bap hip hop.
As a resting heart rate, 45 BPM is below the usual adult range of 60 to 100, which is common and healthy in fit people but worth mentioning to a doctor if you feel dizzy or tired. To measure your own, use the heart rate counter.
Every delay length at 45 BPM, including triplets, is in the BPM to ms calculator. Not sure your song is really at 45? Tap along to check.