How many dB's can an opera singer sing?

Answer 1

Generally a very good singer can sing up to 90dB. But especially for male singers during high Cs they hit 150dB inside their heads (The voice resonates in the head for high notes). A 747's engines on full throttle is 130dB. That's why most Opera singers suffer hearing problems later in life.

Answer 2

An opera singer has been known to be able to sing up to 100 decibels in volume. However, the volume can also depend on the size and structure of the room they are in.