Enter the total number of live births and the total midyear population into the Crude Birth Rate Calculator. The calculator will evaluate the Crude Birth Rate.

## Crude Birth Rate Formula

The following two example problems outline the steps and information needed to calculate the Crude Birth Rate.

CBR = LB / MP * 1000

• Where CBR is the Crude Birth Rate (births/1000 people)
• LB is the total number of live births
• MP is the total midyear population

## How to Calculate Crude Birth Rate?

The following example problems outline how to calculate Crude Birth Rate.

Example Problem #1:

1. First, determine the total number of live births.
• The total number of live births is given as: 4,000.
2. Next, determine the total midyear population.
• The total midyear population is provided as: 250,000.
3. Finally, calculate the Crude Birth Rate using the equation above:

CBR = LB / MP * 1000

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

CBR = 4,000 / 250,000 * 1000 = 16 (births/1000 people)

Example Problem #2:

For this problem, the variables required are provided below:

total number of live births = 5,000

total midyear population = 300,000

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

CBR = LB / MP * 1000 = ?