Enter the number of males and females into the calculator to determine the parity ratio. The parity ratio is a demographic measure that provides the ratio of males to females in a given population.

Parity Ratio Formula

The following formula is used to calculate the parity ratio:

PR = M / F

Variables:

  • PR is the parity ratio
  • M is the number of males in the population
  • F is the number of females in the population

To calculate the parity ratio, divide the number of males (M) by the number of females (F) in the population.

What is a Parity Ratio?

The parity ratio is a demographic indicator that compares the number of males to the number of females in a population. It is often used in population studies, sociology, and public health to understand the gender composition of a community or region. A parity ratio of 1 indicates equal numbers of males and females, while a ratio greater than 1 indicates more males, and a ratio less than 1 indicates more females.

How to Calculate Parity Ratio?

The following steps outline how to calculate the Parity Ratio.


  1. First, determine the number of males (M) in the population.
  2. Next, determine the number of females (F) in the population.
  3. Use the formula PR = M / F to calculate the parity ratio.
  4. Finally, calculate the Parity Ratio (PR).
  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.

Number of males (M) = 120

Number of females (F) = 100