Sones To Db · Trending & Trusted

This is where things get technical. There is no single perfect mathematical conversion because loudness (sones) depends on the frequency (pitch) of the sound. However, for a pure tone at 1,000 Hz, there is a standardized mathematical relationship established by the International Organization for Standardization (ISO).

Want a quick reference? For most common household fans and vents: 1 sone ≈ 40 dB, 2 sones ≈ 50 dB, 4 sones ≈ 60 dB, but expect variation of ±5 dB depending on pitch. sones to db