Speed of Sound - Equations

Calculate the speed of sound in gases, fluids, and solids using acoustic velocity equations. Supports calculations for ideal gases, liquids, and solids based on bulk modulus, density, temperature, and gas properties.

Substance	Bulk Modulus Elasticity - K - (10⁹ N/m²)	Density - ρ - (kg/m³)	Speed of Sound - c - (m/s)
Water (10°C)	2.09	999.7	≈ 1446
Oil	1.35	920	≈ 1212
Ethyl Alcohol	1.06	810	≈ 1143
Mercury	28.5	13595	≈ 1447
Air (0°C)	-	-	331.2
Air (20°C)	-	-	343.1

Calculator

Inputs

Bulk Modulus of Elasticity (K) (10⁹ N/m²)

Density (ρ) (kg/m³)

Gas Constant (R) - Optional for gases (J/kg·K)

Absolute Temperature (T) - Optional for gases (K)

Ratio of Specific Heats (k) - For gases only (dimensionless)

Calculation Type

Results

Speed of Sound (c)-- m/s

Speed of Sound in Gas (c)-- m/s