How loud is a jet hand dryer?
A jet hand dryer is about 90 dB, with a typical range of 80–110 dB. A 2019 study measured up to 110 dB at a child's ear height.
That is about 8 times as loud to the ear as normal conversation and 1e+03 times the sound energy.
Can it damage your hearing?
Yes, with enough exposure. At 90 dBA, NIOSH recommends a daily limit of 2.5 hours; at the top of the range (110 dB) it is 1.5 minutes. Wear earplugs or earmuffs, keep your distance and limit time near the source.
How sound level changes with distance
Decibel figures always depend on distance. For a small source in open air, every doubling of distance lowers the level by about 6 dB; indoors, reflections reduce that drop. Use the sound-vs-distance calculator to estimate the level where you are.
Sounds as loud as a jet hand dryer
High-power blenders crushing ice are the loudest.90 dBDiesel truck
At about 15 m.90 dBDog barking
Large breeds barking at close range can exceed 100 dB.90 dBLarge waterfall
Standing near the plunge pool of a big fall.90 dBLeaf blower
Backpack gas blowers are the loudest; battery models are quieter.90 dBPassing freight train
At about 15 m from the track.90 dBPiano (played loudly)
Fortissimo chords near the instrument.90 dBViolin (at the player's ear)
Violinists' left ears receive more sound than the audience.
Safe listening time
| Level | NIOSH recommended limit | OSHA legal limit (US) |
|---|---|---|
| 84 dBA | 10.1 hours | 18.4 hours |
| 87 dBA | 5.0 hours | 12.1 hours |
| 90 dBA | 2.5 hours | 8.0 hours |
| 93 dBA | 1.3 hours | 5.3 hours |
| 96 dBA | 38 minutes | 3.5 hours |
NIOSH: 85 dBA for 8 hours with a 3 dB exchange rate; OSHA: 90 dBA for 8 hours with a 5 dB exchange rate. General information, not medical advice – see a hearing professional about ringing ears, muffled hearing or pain.
More recordings elsewhere
- Hand Dryer 9 (hand movement) .wav by 1chris.murray1 – CC0 1.0 (freesound)
- The sound produced by a hands dryer by davidkyoku – CC0 1.0 (freesound)
- Hand Dryer by ecfike – CC0 1.0 (freesound)
- hand dryer by Ecchinigami – CC0 1.0 (freesound)
- Hand dryer-19.wav by COSP_LCS13 – CC0 1.0 (freesound)
Frequently asked questions
How many decibels is a jet hand dryer?
About 90 dB, with a typical range of 80–110 dB.
Is a jet hand dryer louder than a jet engine?
No – a jet engine at takeoff is about 140 dB at 30 m, while a jet hand dryer is about 90 dB.
How are these levels measured?
With a sound level meter, usually A-weighted (dBA) to match human hearing. Published figures depend on distance and conditions, so treat them as typical values.