1 Hertz is equal to:

1 Hertz is equal to 60 vibrations per minute.
Here, the frequency is the number of oscillations per unit of time measured in hertz (Hz). So, one hertz implies that an event occurs once every second. 

That means 1 hertz = 1 vibration per second. So we know that in 1 min = 60 sec. Therefore, 1 Hertz = 60 vibrations per minute.