Enter the total amount of estrogen (pg/mL) and the total amount of progesterone (pg/mL) into the Estrogen to Progesterone Ratio Calculator. The calculator will evaluate and display the Estrogen to Progesterone Ratio. 

Estrogen to Progesterone Ratio Formula

The following formula is used to calculate the Estrogen to Progesterone Ratio. 

EPR = E / P 
  • Where EPR is the Estrogen to Progesterone Ratio
  • E is the total amount of estrogen (pg/mL) 
  • P is the total amount of progesterone (pg/mL) 

To calculate the estrogen to progesterone ratio, simply divide the amount of estrogen by the amount of progesterone.

How to Calculate Estrogen to Progesterone Ratio?

The following example problems outline how to calculate Estrogen to Progesterone Ratio.

Example Problem #1:

  1. First, determine the total amount of estrogen (pg/mL). 
    • The total amount of estrogen (pg/mL) is given as: 20.
  2. Next, determine the total amount of progesterone (pg/mL). 
    • The total amount of progesterone (pg/mL) is provided as: 15.
  3. Finally, calculate the Estrogen to Progesterone Ratio using the equation above: 

EPR = E / P 

The values given above are inserted into the equation below and the solution is calculated:

EPR = 20 / 15  = 1.33


Example Problem #2: 

For this problem, the variables required are provided below:

total amount of estrogen (pg/mL) = 20

total amount of progesterone (pg/mL) = 30

Test your knowledge using the equation and check your answer with the calculator above.

EPR = E / P  = ?