Hello how may I help you? I want to know about a specific world record. I would be happy to assist What was the loudest ever recorded sound? The sound made by the Krakatoa Volcanic eruption in 1883 How many decibels was it? It was at least 172 decibels 40 miles away. Other data is estimation. That's really loud. Yes. It is beyond the human threshold for pain Are there any other contenders for the record? The Hydrogen bomb was impressive but not quite close