Enter the number of live births and the female population ages 15-44 into the General Fertility Rate Calculator. The calculator will evaluate the General Fertility Rate. 

General Fertility Rate Formula

The following two example problems outline the steps and information needed to calculate the General Fertility Rate.

FR = LB / P * 1000

  • Where FR is the General Fertility Rate (births per 1000 women)
  • LB is the number of live births 
  • P is the female population ages 15-44 

How to Calculate General Fertility Rate?

The following example problems outline how to calculate General Fertility Rate.

Example Problem #1:

  1. First, determine the number of live births. 
    • The number of live births is given as: 100,000.
  2. Next, determine the female population ages 15-44. 
    • The female population ages 15-44 is provided as: 2,000,000.
  3. Finally, calculate the General Fertility Rate using the equation above: 

FR = LB / P * 1000

The values provided above are inserted into the equation below and computed.

FR = 100,000 / 2,000,000 * 1000 = 50 (births per 1000 women)


Example Problem #2: 

For this problem, the variables required are provided below:

number of live births = 150,000

female population ages 15-44 = 3,000,000

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

FR = LB / P * 1000 = ?