Density & materials

Water hardness

CaCO₃ equivalents: milligrams per litre, grains per gallon, and national degrees.

Indexed units: 5
Family: Density & materials

Available units

Units in this category

milligram per litre (CaCO₃)commonmg/L CaCO₃ grain per US gallonus customarygpg German degreemetric historical°dH English degreeimperial°e French degreemetric historical°fH