🛠️ The Core Difference: Human Perception vs. Physical Pressure

Because the scale is linear, the math is simple for consumers. If a fan is rated at 3 sones, you know it will be three times louder than the baseline quiet hum of 1 sone.

for a 1 kHz tone.

Or solving for dB:

Decoding Acoustic Metrics: The Complete Guide to Sones to dB Conversion

(range hoods, exhaust fans, air purifiers).

Let’s break down what each unit means and how they relate.

Let’s plug some numbers in to see how standard appliances stack up:

When shopping for home ventilation systems, quiet range hoods, or bathroom exhaust fans, you will inevitably run into two competing metrics for measuring noise: and decibels (dB) .

Where: