Enter the total coolant volume and the desired antifreeze percentage into the calculator to determine the antifreeze volume needed for your vehicle’s cooling system.

Antifreeze Ratio Formula

The following formula is used to calculate the antifreeze volume. 

AV = (AP / 100) * TV

Variables:

  • AV is the antifreeze volume (gallons)
  • AP is the antifreeze percentage (%)
  • TV is the total coolant volume (gallons)

To calculate the antifreeze volume, multiply the total coolant volume by the antifreeze percentage and then divide by 100.

What is Antifreeze Ratio?

Antifreeze ratio refers to the proportion of antifreeze to water in a vehicle’s cooling system. It is important to maintain the correct antifreeze ratio to prevent freezing in cold temperatures and boiling in hot temperatures, as well as to protect against corrosion and scale buildup. The ratio is typically expressed as a percentage of the total coolant volume.

How to Calculate Antifreeze Volume?

The following steps outline how to calculate the Antifreeze Volume.

  1. First, determine the total coolant volume (TV) in gallons.
  2. Next, determine the desired antifreeze percentage (AP) in the mixture.
  3. Next, gather the formula from above = AV = (AP / 100) * TV.
  4. Finally, calculate the Antifreeze Volume (AV) in gallons.
  5. 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.

Total coolant volume (TV) = 12 gallons

Desired antifreeze percentage (AP) = 50%