55 BPM in milliseconds
At 55 BPM one beat lasts 1,090.9 ms, which is 0.92 beats per second. One bar of 4/4 takes 4.36 seconds.
Largo usually means about 40–59 BPM.
| Note | Straight | Dotted | Triplet |
|---|---|---|---|
| Whole | 4,363.6 | 6,545.5 | 2,909.1 |
| Half | 2,181.8 | 3,272.7 | 1,454.5 |
| Quarter | 1,090.9 | 1,636.4 | 727.3 |
| Eighth | 545.5 | 818.2 | 363.6 |
| 16th | 272.7 | 409.1 | 181.8 |
| 32nd | 136.4 | 204.5 | 90.9 |