Generator Noise Distance Calculator
How loud will your generator be from your house or campsite? Enter the rated decibels (dBA) to estimate the noise level at any distance.
Generator & Location
Found in specs. Standard portable generators are 68-76 dBA. Inverters are 52-60 dBA.
Manufacturers usually measure noise at 7 meters (23 ft).
Estimated Noise Level
Comparable To:
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Loudness Scale
How Distance Affects Sound
Sound drops off quickly over distance. This phenomenon is governed by the Inverse Square Law. In an open field (free field), every time you double the distance from the sound source, the noise level drops by approximately 6 decibels (dB).
- Formula Used: $L_2 = L_1 - 20 \cdot \log_{10}(d_2/d_1)$
- Factors: This calculator assumes open air. Obstacles like trees, fences, or buildings will further reduce noise (blockage). Reflective surfaces like concrete walls can increase it.
Decibel Reference:
- 50 dB: Quiet home, light rain.
- 60 dB: Normal conversation. (Inverter Generators)
- 70 dB: Vacuum cleaner, city traffic. (Standard Portable Generators)
- 80 dB: Garbage disposal, loud music.