Part per Million to Pound per Million Gallon (US) Conversion

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

From Part per Million

ppm

To Pound per Million Gallon (US)

lb/million gal (US)

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

Conversion Formula

1 ppm = 8.336 lb/million gal (US)

1 lb/million gal (US) = 0.12 ppm

Example

Convert 15 ppm to lb/million gal (US):

15 ppm = 15 × 8.336 lb/million gal (US) = 125.038 lb/million 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

Pound per Million Gallon (US)

lb/million gal (US)

Definition

The pound per million gallon (US) is a unit of mass concentration used for very dilute solutions in the United States, representing pounds of solute per million US gallons of solution. It is used for trace concentrations.

History/Origin

This unit was developed for expressing very low concentrations in large volumes, particularly in water treatment and environmental applications. It provides a practical way to express trace concentrations in US industrial systems.

Current Use

Used in the United States for water treatment, environmental monitoring, and industrial applications where very dilute solutions are involved. It is commonly found in water quality reports and environmental assessments.

Multiplier

1E-7

Offset