Enter the total amount liquid in gallons and the total cost into the calculator to determine the cost per gallon.

## Cost Per Gallon Formula

The following equation is used to calculate the Cost Per Gallon.

CPG = C / TV

- Where CPG is the cost per gallon ($/gallon)
- C is the total cost ($)
- TV is the total volume of liquid (gallons)

To calculate the cost per gallon of any liquid, divide the total cost by the volume in gallons.

## What is the Cost Per Gallon?

Definition:

A cost per gallon is a term, typically used to talk about water, oil, or other liquids, that describes the cost per unit volume in gallons.

## What is the Cost Per Gallon of Water?

**The average cost per gallon of water is $.009 in the United States.**

The cost per gallon of water is determined by several factors, including the water source, the treatment required, and the company providing it.

## How to Calculate Cost Per Gallon?

Example Problem:

The following example outlines the steps and information needed to calculate a cost per gallon.

First, determine the total volume of the liquid. In this example, we are looking at a volume of 100 gallons of water.

Next, determine the total cost of the liquid. For these 100 gallons of water it costs us $50.00.

Finally, calculate the cost per gallon using the formula above:

CPG = C / TV

CPG = $50 / 100

CPG = $0.50 / gallon