Fluid Mechanics
Basic

Specific Gravity

Density relative to water.

Formula

SG=ρρwaterSG = \frac{\rho}{\rho_{water}}

Variables

\rhoSubstance density
\rho_{water}1000 kg/m³

Did You Know?

Ice floats because its specific gravity is below 1, a rare property that lets fish survive under frozen lakes.

densityspecific gravity