How loud is a generator?
Generator noise levels are usually listed in decibels (dB) at a certain distance, but it can be hard to translate those numbers into real-world experience.
This guide explains typical generator noise ranges and what they mean for your home, neighbors, and camping trips.
Typical generator noise levels
Most portable generators are rated somewhere between 50 and 80 dB at a specified distance, often 20 or 23 feet. Inverter generators are usually on the quieter end of that range, while open-frame contractor-style units tend to be louder.
- 50–60 dB: similar to normal conversation or a quiet office.
- 60–70 dB: like a vacuum cleaner or busy street at a distance.
- 70–80 dB: more like a loud lawnmower or leaf blower.
Why distance matters
Sound drops off as you move away from the source. Doubling the distance can often reduce perceived loudness by several decibels. That's one reason many people place generators farther from windows and use longer, correctly sized extension cords.
Noise rules and neighbors
Some neighborhoods and campgrounds have quiet hours or specific noise limits. Quieter inverter generators are often easier to live with long-term and more likely to fit within those rules, especially at night.
Tip: you can always use the calculators on the GeneratorCalc home page to turn these ideas into rough numbers for your specific generator and situation.