Acoustic Impedance Calculator

Calculate the acoustic impedance of a medium from its density and sound speed

Common Materials

Materialρ (kg/m³)c (m/s)Z (Rayl)
Air (20°C)1.2343412
Water100014801.48e6
Blood106015701.66e6
Muscle105015801.66e6
Bone190040807.75e6
Steel780059604.65e7
Aluminum270063201.71e7

Formula Used

Z = ρ × c

Where: Z = acoustic impedance (Rayl), ρ = density (kg/m³), c = sound speed (m/s)