Listen: sounds near 66 dB
How loud is 66 dB?
66 decibels is moderate. 66 dB sounds about 1.5 times as loud as normal conversation (60 dB), and it carries 3.98 times the sound energy. Typical sounds around this level: air conditioner, dishwasher, normal conversation.
Decibels are logarithmic: every +10 dB means ten times more sound intensity but is heard as only about twice as loud, and every +6 dB doubles the sound pressure. That is why a few decibels can make a big difference.
Is 66 dB safe?
Yes. 66 dB is far below the levels that damage hearing. At this level noise is more a question of comfort, concentration and sleep than of hearing damage.
Sounds around 66 dB
Window unit or indoor split unit at a few metres.60 dBDishwasher
Quiet models are rated 40–45 dB; older ones exceed 60 dB.60 dBNormal conversation
Two people talking at about 1 m.60 dBOcean waves on the shore
Standing on the beach; storm surf is much louder.70 dBSnoring
Loud snoring measured near the sleeper can approach 90 dB.70 dBWashing machine
Louder during the spin cycle.75 dBBusy restaurant
Hard surfaces and many voices push levels up.75 dBToilet flush
Pressure-assisted toilets are the loudest.
Frequently asked questions
Is 66 dB loud?
66 dB is moderate. For comparison: air conditioner, dishwasher, normal conversation.
How many times louder is 66 dB than 56 dB?
A 10 dB increase means ten times the sound intensity and is heard as roughly twice as loud.
How long can you listen to 66 dB?
66 dB is safe for unlimited listening.