Enter the parts per million (ppm) into the Calculator. The calculator will evaluate the Grains Per Gallon.

## Grains Per Gallon Formula

GPG = PPM / 17.1

Variables:

- GPG is the Grains Per Gallons ((grains per gallon))
- PPM is the parts per million (ppm)

To calculate Grains Per Gallon, divide the parts per million by 17.1

## How to Calculate Grains Per Gallons?

The following steps outline how to calculate the Grains Per Gallon.

- First, determine the parts per million (ppm).
- Next, gather the formula from above = GPG = PPM / 17.1.
- Finally, calculate the Grains Per Gallon.
- After inserting the variables and calculating the result, check your answer with the calculator above.

**Example Problem : **

Use the following variables as an example problem to test your knowledge.

parts per million (ppm) = 70