Enter the percentage volume of water (%) and the percentage volume of oil (%) into the Oil Water Ratio Calculator. The calculator will evaluate the Oil Water Ratio. 

Oil Water Ratio Formula

The following two example problems outline the steps and information needed to calculate the Oil Water Ratio.

OWR = O/W

Variables:

  • OWR is the Oil Water Ratio (oil:water)
  • W is the percentage volume of water (%) 
  • O is the percentage volume of oil (%) 

How to Calculate Oil Water Ratio?

The following steps outline how to calculate the Oil Water Ratio.


  1. First, determine the percentage volume of water (%). 
  2. Next, determine the percentage volume of oil (%). 
  3. Next, gather the formula from above = OWR = O/W.
  4. Finally, calculate the Oil Water Ratio.
  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.

percentage volume of water (%) = 60

percentage volume of oil (%) = 40

OWR = O/W = ?