How Quiet Are eVTOLs? The Definitive Noise Comparison

Most eVTOL aircraft operate between 45–65 decibels at typical distances. For context, a normal conversation is about 60 dB. The quietest eVTOLs, like the Joby S4, produce only about 45 dB at 500 meters — softer than a household refrigerator. This is approximately 1,000 times less sound intensity than a conventional helicopter.

Three key engineering differences make eVTOLs dramatically quieter: (1) Electric motors produce far less noise than combustion turbine engines, (2) Multiple small rotors distribute thrust across many blades instead of one large, fast-spinning rotor — reducing blade tip speeds which are the primary source of helicopter noise, (3) Advanced blade designs are computationally optimized to minimize noise signatures. Some eVTOLs use ducted fans that further contain and reduce noise.

At typical operating distances, eVTOL noise levels are comparable to or quieter than existing urban background noise like traffic and air conditioning units. The FAA and EASA have strict noise certification requirements that eVTOLs must meet before commercial service. Additionally, vertiport placement and optimized flight corridors are designed to minimize community noise impact. Studies show eVTOL noise at a distance of 500 meters is nearly indistinguishable from ambient city noise.

eVTOLs are quieter than most ground transportation at typical operating distances. A busy road produces about 80 dB, a diesel bus generates around 85 dB, and a motorcycle can reach 95 dB. Most eVTOLs in cruise flight produce 45–55 dB at 300–500 meters — less than a normal conversation. Even during takeoff and landing, which are the loudest phases, eVTOL noise levels typically stay below 70 dB at ground level, comparable to a washing machine.

Both the FAA and EASA are developing noise certification frameworks for eVTOL aircraft. The FAA uses aircraft-specific Special Conditions and certification bases, while EASA has published SC-VTOL standards that include noise provisions. These frameworks set noise limits for takeoff, flyover, and landing phases. Leading eVTOL manufacturers — including Joby, Archer, and Volocopter — have designed their aircraft with these emerging requirements in mind. Noise certification criteria continue to evolve as the industry matures and more acoustic data becomes available from flight testing.