Part per Million to Grain per Gallon (US) Conversion

Convert between Part per Million and Grain per Gallon (US) quickly and accurately.

From Part per Million

ppm

To Grain per Gallon (US)

gr/gal (US)

How to Convert Part per Million to Grain per Gallon (US)

Conversion Formula

1 ppm = 0.058 gr/gal (US)

1 gr/gal (US) = 17.138 ppm

Example

Convert 15 ppm to gr/gal (US):

15 ppm = 15 × 0.058 gr/gal (US) = 0.875 gr/gal (US)

Unit Information

Learn about the concentration - solution units you're converting between

Part per Million

ppm

Definition

Parts per million is a dimensionless unit expressing the ratio of one part solute to one million parts solution by mass. It is widely used for expressing very low concentrations in environmental and industrial applications.

History/Origin

The concept of parts per million originated in analytical chemistry as a convenient way to express very small concentrations. It became standardized in environmental regulations and industrial quality control for its simplicity and clarity.

Current Use

Universally used in environmental science, water treatment, air quality monitoring, and industrial quality control. It is the standard unit for expressing concentrations of contaminants, additives, and trace elements in various media.

Multiplier

1E-6

Offset

Grain per Gallon (US)

gr/gal (US)

Definition

The grain per gallon (US) is a unit of mass concentration used in the United States, representing grains of solute per US gallon of solution. It is commonly used in water treatment and industrial applications in the US.

History/Origin

This unit combines the traditional grain (a unit of mass) with the US gallon (a unit of volume). It emerged from US industrial practices and is still used in water treatment and chemical processing industries in the United States.

Current Use

Primarily used in the United States for water treatment, chemical processing, and industrial applications. It is commonly found in water quality reports and chemical specifications in US-based industries.

Multiplier

Offset