Someone did the math

Question:

What if every cat in the world surrounded you and meowed at the same time? How loud would it be?

Answer:

[…] it would be about 97dB. That’s something like the sound of a loud motorcycle passing right by you. Not deafening, but uncomfortably loud.

Interestingly you don’t even need all the cats in the world. After about 10,000 cats, they start getting too far away to matter.

Not convinced? Check out the math involved here: imgur.com