How loud is 90 decibels?
90 dB is a lawn mower, a food blender or a barking dog nearby. Safe daily exposure drops to about 2.5 hours. Wearing ear protection for yard work and power tools at this level is a smart habit.
Very loud
Risk of hearing damage with prolonged exposure. Consider ear protection.
Sounds around 90 dB
- Hair dryer85 dB
- Food blender90 dB
- Gas lawn mower90 dB
- Dog barking (5 m)90 dB
- Motorcycle passing95 dB
Is 90 dB safe?
NIOSH recommends a maximum of 2 hr 31 min per day at 90 dB(A). The more lenient US OSHA workplace limit is 8 hr.
- NIOSH
- 2 hr 31 min
- OSHA
- 8 hr
Where you hear 90 dB
90 dB is a petrol lawn mower, a blender at full speed, a passing motorbike or the bar area of a busy nightclub. It is also the OSHA permissible exposure limit for an 8-hour shift in the United States, although NIOSH considers that too lenient and recommends only about 2.5 hours at this level.
Practical tips at 90 dB
Wear hearing protection for yard work, DIY and power tools that reach 90 dB. Measure at the position of your ear rather than at arm’s length: in open space, the level from a small source drops by roughly 6 dB each time you double the distance, so a few steps back makes a real difference.
The physics of 90 dB
- Sound pressure
- 0.63 Pa
- Sound intensity
- 0.001 W/m²
- Energy vs. threshold of hearing
- 10⁹×
How does 90 dB compare?
Measure 90 dB yourself
Open the free sound meter, press Start and see whether your environment is above or below 90 dB.
Frequently asked questions
Is 90 dB safe?
NIOSH recommends a maximum of 2 hr 31 min per day at 90 dB(A). The more lenient US OSHA workplace limit is 8 hr.
Sounds around 90 dB
Hair dryer (85 dB), Food blender (90 dB), Gas lawn mower (90 dB), Dog barking (5 m) (90 dB), Motorcycle passing (95 dB)
How does 90 dB compare?
90 dB sounds about 4× as loud as 70 dB, with 100× the sound energy. 90 dB sounds about 2× as loud as 80 dB, with 10× the sound energy. 90 dB sounds about 2× quieter than 100 dB. 90 dB sounds about 4× quieter than 110 dB.
Sources
Exposure limits follow the NIOSH REL (85 dB(A), 3 dB exchange rate) and the OSHA PEL (90 dB(A), 5 dB exchange rate). Example levels are typical values; real sources vary with distance and conditions.
- Noise and hearing loss basics (NIOSH recommended exposure limit), CDC / NIOSH
- 29 CFR 1910.95: Occupational noise exposure, US OSHA
- Environmental Noise Guidelines for the European Region (2018), World Health Organization
- Safe listening devices and systems: a WHO-ITU standard (H.870), World Health Organization
- Noise-Induced Hearing Loss, NIH / NIDCD
Measure the noise around you now
100% private. Audio is analysed on your device and is never recorded or uploaded.
Open the sound meter