Boeing 707 or DC-8 aircraft at one nautical mile (6080 ft) before landing (106 dB); jet flyover at 1000 feet (103 dB); Bell J-2A helicopter at 100 ft (100 dB). 8 times as loud as 70 dB. Serious damage possible …

The decibels of a jet engine range from 120 to 140 and are one of the loudest manufactured sounds in existence. Sounds above 85 decibels can potentially cause severe damage to a person's hearing, …

Oct 8, 2025 · How Loud Is a Jet Engine in Decibels (dB)? If you’ve ever heard a jet start, you know they’re ear-piercingly loud. In decibels (dB), a typical jet engine weighs in at roughly 160dB. Not that …

Jan 9, 2026 · Jet engines are among the loudest human-made noise sources, with sound levels reaching up to 140 decibels (dB) at takeoff. For context, prolonged exposure to noise above 85 dB …

Sep 1, 2025 · Explore the science behind jet engine loudness, how it’s measured, its impacts, and ongoing efforts to make aviation quieter.

May 9, 2018 · Scientists use decibels to measure the loudness of a sound. The weakest sound you can hear measures zero decibels, while the loudest sound clocks in at a staggering 194 decibels. When it …

Feb 9, 2026 · A jet engine at takeoff can produce noise levels ranging from 120 to 140 decibels (dB) at a distance of 100 meters. This intensity places jet engine noise firmly in the category of sounds …

For civil jet aircraft, there are four stages identified, with Stage 1 being the loudest and Stage 4 being the quietest. For helicopters, two different stages exist, Stage 1 and Stage 2. As with civil jet aircraft, …

Jet Engine produces 120 decibels. Learn if this noise level is safe, compare it to other sounds, and measure it yourself.

Nov 10, 2025 · A jet engine at takeoff, especially from close proximity (around 100 feet), can produce astonishing levels of 130-140 decibels (dB). For comparison, a large passenger jet during takeoff can …