what decibel on a dishwasher indicates its noise level
Many manufacturers publish decibel ratings for dishwashers to help consumers compare operating noise levels. Normal conversation measures about 60 decibels, and some of the quietest dishwashers on the market rank at 39 to 40 decibels. When comparing the quietness of dishwashers, keep in mind that decibels measure sound intensity, and a few points can make a big difference. An increase of one decibel means a sound increase of 30 percent, while an increase of 3 decibels means a doubling of sound level. A dishwasher rated at 56 decibels is four times as loud as one rated at 53, or twice as loud as one rated at 50.